Engine, hybrid powertrain and vehicle

Abstract

An engine, a hybrid powertrain, and a vehicle. The engine comprises: a component to be subjected to oil return and an oil return pump assembly, wherein said component is provided with a plurality of oil return regions, and at least some of the plurality of oil return regions are located at two opposite ends of said component; and the oil return pump assembly has an oil return port, which is connected to all the oil return regions at the two opposite ends.

Description

Engine, hybrid assembly and vehicle

[0001] This application claims priority to Chinese Patent Application No. 202411346678.5, filed on September 25, 2024, which claims priority to Chinese Patent Application No. 202311760055.8, filed on December 19, 2023, the contents of both of which are incorporated herein by reference in their entirety. TECHNICAL FIELD

[0002] The present disclosure relates to the technical field of vehicles, and in particular to an engine, a hybrid assembly and a vehicle. BACKGROUND

[0003] Generally, in order to make the engine run smoothly, the engine is continuously lubricated, and the lubricating oil flowing into the engine will fall into the oil sump. The oil return pump is used to recover the lubricating oil in the oil sump to supply it back to the engine. The oil return efficiency of the oil return pump will affect the lubrication effect and in turn affect the running stability of the engine. SUMMARY

[0004] The present disclosure aims to at least solve one of the technical problems existing in the related art.

[0005] In a first aspect, an engine is provided, comprising: a component to be returned to oil and an oil return pump assembly. The component to be returned to oil is provided with a plurality of oil return areas, at least part of the plurality of oil return areas being located at opposite ends of the component to be returned to oil; the oil return pump assembly has an oil return port, and the oil return port is connected to the oil return areas at the opposite ends, respectively.

[0006] According to the engine of some embodiments of the present disclosure, by arranging at least part of the oil return areas at opposite ends of the component to be returned to oil, the oil return pump assembly can return oil to the component to be returned to oil from different positions, which can improve the oil return efficiency, eliminate the oil return dead angle, and the oil return pump assembly is not easy to be sucked empty, thereby ensuring the running stability of the engine.

[0007] In a second aspect, a hybrid assembly is provided, comprising: the above-mentioned engine.

[0008] According to the hybrid assembly of some embodiments of the present disclosure, the running stability is high, the overall performance is good, and the overall performance of the vehicle is improved.

[0009] In a third aspect, a vehicle is provided, comprising: the above-mentioned engine; or the above-mentioned hybrid assembly.

[0010] According to the vehicle of some embodiments of the present disclosure, the overall running stability of the vehicle is good, and the brand image is improved.

[0011] Additional aspects and advantages of the present disclosure will be partially apparent from the following description, become apparent in light of the following description, or be learned from the practice of the present disclosure. BRIEF DESCRIPTION OF DRAWINGS

[0012] The above and additional aspects and advantages of the present disclosure will become apparent from and will be elucidated with reference to the embodiments described hereinafter with reference to the attached drawings.

[0013] FIG. 1 is a structural diagram of an engine according to some embodiments;

[0014] FIG. 2 is a bottom view of an oil return pump assembly according to some embodiments;

[0015] FIG. 3 is a structural diagram of an oil return pump assembly and an oil pan according to some embodiments;

[0016] FIG. 4 is a flow path simulation diagram of an oil return pump assembly and an oil pan according to some embodiments;

[0017] FIG. 5 is a flow path simulation diagram of an oil return pump assembly and an oil pan according to some embodiments;

[0018] FIG. 6 is a left view of an oil return pump assembly according to some embodiments;

[0019] FIG. 7 is a right view of an oil return pump assembly according to some embodiments;

[0020] FIG. 8 is a flow path simulation diagram of an oil return pump assembly and a main cylinder block according to some embodiments;

[0021] FIG. 9 is a flow path simulation diagram of an oil return pump assembly and a main cylinder block according to some embodiments;

[0022] FIG. 10 is a cross-sectional view of an oil return pump according to some embodiments;

[0023] FIG. 11 is a structural diagram of a first rotating shaft and a second rotating shaft according to some embodiments;

[0024] FIG. 12 is a schematic view of a receiving cavity according to some embodiments;

[0025] FIG. 13 is an exploded view of a hybrid assembly according to some embodiments;

[0026] FIG. 14 is a block diagram of a vehicle according to some embodiments.

[0027] Reference numerals: Hybrid assembly 1000, Engine 100, Generator 200, First direction L1, Second direction L2, Return oil pump assembly 1, Bottom wall 1a, Return oil pump 11, Bottom housing return oil pump 111, First return oil pump 1111, First return oil port 11111, Second return oil pump 1112, Second return oil port 11121, Cylinder block return oil pump 112, Third return oil pump 1121, Third return oil port 11211, Fourth return oil pump 1122, Fourth return oil port 11221, Return oil port 113, Housing 12, Receiving cavity 121, First sub-cavity 1211, Second sub-cavity 1212, First oil inlet channel 122, Second oil inlet channel 123, Oil outlet channel 124, Inlet end 124a, Guide protrusion 125, Center hole 126. Driven gear 13, driven gear 14, first rotating shaft 15, second rotating shaft 16, oil transport space 17, main cylinder block 2, third end 2a, fourth end 2b, left cylinder block 21, left cylinder body 211, left cylinder head 212, right cylinder block 22, right cylinder body 221, right cylinder head 222, crankshaft cavity 23, oil pan 3, first end 3a, second end 3b. Detailed Implementation

[0028] The embodiments of this disclosure are described in detail below. Examples of these embodiments are shown in the accompanying drawings, and the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this disclosure, and should not be construed as limiting this disclosure.

[0029] Hereinafter, with reference to the accompanying drawings, an engine 100 according to an embodiment of the present disclosure will be described.

[0030] As shown in Figures 1 and 2, an engine 100 according to some embodiments of the present disclosure includes: a component to be returned to oil and a return oil pump assembly 1. The component to be returned to oil has a plurality of return oil areas, at least some of which are located at opposite ends of the component to be returned to oil. The return oil pump assembly 1 has a return oil port 113, which is connected to the return oil areas at opposite ends.

[0031] This improves oil return efficiency and eliminates dead zones in oil return, making it less likely for the oil return pump assembly 1 to suck in cavitation, thereby ensuring the operational stability of the engine 100.

[0032] First, as shown in Figures 1-3, the engine 100 includes a component for returning oil, which has multiple oil return areas, at least some of which are located at opposite ends of the component. For example, there can be four oil return areas, with two oil return areas spaced apart at the front end of the component and two oil return areas spaced apart at the rear end of the component.

[0033] Meanwhile, the engine 100 further comprises an oil return pump assembly 1 and an oil tank, the oil return pump assembly 1 is connected with the oil return component, the oil return pump assembly 1 is communicated with the oil tank, the oil return pump assembly 1 has an oil return port 113, the oil return port 113 can be communicated with the oil return areas at the opposite ends respectively, so that the oil return pump assembly 1 can simultaneously return oil from multiple oil return areas through the oil return port 113, and deliver the recovered lubricating oil to the oil tank.

[0034] It should be noted that the oil return component can be any one of the main cylinder body 2 and the oil pan 3, or can include the main cylinder body 2 and the oil pan 3. The oil pan 3 is arranged at the lower part of the main cylinder body 2 and is communicated with the main cylinder body 2, so as to close the main cylinder body 2 at the lower part of the main cylinder body 2, prevent impurities from entering the lower part of the main cylinder body 2, and the oil pan 3 can be used to temporarily collect and store the lubricating oil flowing back from the parts needing lubrication in the main cylinder body 2 (such as the surface of the crankshaft, intake VVT, exhaust VVT, etc.).

[0035] For example, when the oil return component is the oil pan 3, the oil return pump assembly 1 can return oil to the oil pan 3; when the oil return component is the main cylinder body 2, the oil return pump assembly 1 can return oil to the main cylinder body 2; and when the oil return component includes the oil pan 3 and the main cylinder body 2, the oil return pump assembly 1 can return oil to the oil pan 3 or the main cylinder body 2.

[0036] It can be understood that by arranging at least part of the oil return areas at the opposite ends of the oil return component respectively, the oil return pump assembly 1 can simultaneously return oil to the oil return component from different positions, thereby improving the oil return efficiency and reducing the oil return dead angle. In addition, when the engine 100 tilts, the oil return pump assembly 1 is not easy to be sucked empty, which is beneficial to improve the oil return stability.

[0037] According to the engine 100 of some embodiments of the present disclosure, by arranging at least part of the oil return areas at the opposite ends of the oil return component respectively, the oil return pump assembly 1 can return oil to the oil return component from different positions, thereby improving the oil return efficiency, eliminating the oil return dead angle, and the oil return pump assembly 1 is not easy to be sucked empty, thereby ensuring the operation stability of the engine 100.

[0038] In some embodiments of the present disclosure, as shown in FIGS. 2-3, the oil return component includes the oil pan 3, the two ends of the oil pan 3 along the first direction L1 are respectively a first end 3a and a second end 3b, the first end 3a and the second end 3b are both provided with an oil return area, and the oil return port 113 is connected with the oil return area of the first end 3a and the oil return area of the second end 3b respectively.

[0039] Therefore, the oil return pump assembly 1 can return oil from the first end 3a and the second end 3b of the oil pan 3 at the same time, the oil return efficiency of the oil return pump assembly 1 can be improved, the probability of air suction of the oil return pump assembly 1 can be reduced, and the possibility of oil overflow from the oil pan 3 can be reduced.

[0040] In some embodiments of the present disclosure, referring to FIGS. 6-8, the oil return pump assembly 1 includes a first oil return pump 1111 having a first oil return port 11111 and a second oil return pump 1112 having a second oil return port 11121, the first oil return port 11111 is connected to the oil return area of the first end 3a, and the second oil return port 11121 is connected to the oil return area of the second end 3b.

[0041] For example, referring to FIGS. 2-5, the oil return pump assembly 1 includes a bottom shell oil return pump 111, the bottom shell oil return pump 111 includes a first oil return pump 1111 and a second oil return pump 1112, the first oil return pump 1111 and the second oil return pump 1112 are arranged apart along a first direction L1, the first oil return pump 1111 is arranged close to the first end 3a and has a first oil return port 11111, and the second oil return pump 1112 is arranged close to the second end 3b and has a second oil return port 11121.

[0042] For example, the first oil return port 11111 of the first oil return pump 1111 can be connected to the oil return area of the first end 3a, so that the first oil return pump 1111 can be used to return oil located at the first end 3a, and the second oil return pump 1112 can be connected to the oil return area of the second end 3b, so that the second oil return pump 1112 can be used to return oil located at the second end 3b. Through the above arrangement, the flow path of the oil can be shortened, and the oil return efficiency can be improved.

[0043] In some embodiments of the present disclosure, as shown in FIGS. 2-5, the first end 3a is provided with at least two oil return areas, and the first oil return pump 1111 is provided with at least two first oil return ports 11111, the at least two first oil return ports 11111 and the at least two oil return areas of the first end 3a are connected one by one.

[0044] For example, two oil return areas can be provided on the first end 3a, and two first oil return ports 11111 can be provided on the first oil return pump 1111, and the two oil return areas of the first end 3a and the two first oil return ports 11111 are connected one by one.

[0045] Through the above arrangement, the oil return efficiency of the first oil return pump 1111 can be improved, and the first oil return pump 1111 is less likely to be blocked and air suction, and the reliability of the first oil return pump 1111 is improved.

[0046] In some embodiments of the present disclosure, as shown in FIGS. 2-5, the second end 3b is provided with at least two oil return areas, and the second oil return pump 1112 is provided with at least two second oil return ports 11121, and the at least two second oil return ports 11121 and the at least two oil return areas of the second end 3b are connected one by one.

[0047] For example, two oil return areas can be provided on the second end 3b, and two second oil return ports 11121 can be provided on the second oil return pump 1112, and the two oil return areas of the second end 3b and the two second oil return ports 11121 are connected one by one.

[0048] Through the above arrangement, the oil return efficiency of the second oil return pump 1112 can be improved, and the second oil return pump 1112 is less likely to be blocked and sucked, thereby improving the reliability of the second oil return pump 1112.

[0049] In some embodiments of the present disclosure, as shown in FIG. 5, the first end 3a and the second end 3b can be arranged apart along the front-rear direction, the first end 3a is provided with two oil return areas, the two oil return areas of the third end 2a are arranged apart along the left-right direction, and the second end 3b is provided with two oil return areas, and the two oil return areas of the second end 3b are arranged apart along the left-right direction.

[0050] For example, the first oil return pump 1111 is provided with two first oil return ports 11111, one of the two first oil return ports 11111 is connected to the oil return area on the left side of the first end 3a, and the other is connected to the oil return area on the right side of the second end 3b. At the same time, the second oil return pump 1112 is provided with two second oil return ports 11121, one of the two second oil return ports 11121 is connected to the oil return area on the right side of the first end 3a, and the other is connected to the oil return area on the left side of the second end 3b.

[0051] Through the above arrangement, the two first oil return ports 11111 of the first oil return pump 1111 can be diagonally arranged, and the two second oil return ports 11121 of the second oil return pump 1112 can be diagonally arranged, and in each limit attitude (uphill and downhill, left and right tilt), the oil return stability of the first oil return pump 1111 and the second oil return pump 1112 can be ensured, which is beneficial to avoid problems such as cylinder flooding, dry grinding, abnormal noise, and insufficient oil pressure caused by poor oil return, thereby improving the reliability of the oil return pump assembly 1.

[0052] In some embodiments of the present disclosure, as shown in FIG. 3, the first direction L1 can be set as the front-rear direction, so that the oil return pump assembly 1 can return oil to the oil pan 3 from the front and rear ends; or the first direction L1 can be set as the left-right direction, so that the oil return pump assembly 1 can return oil to the oil pan 3 from the left and right ends. Thus, it is beneficial to meet different working conditions.

[0053] In some embodiments of the present disclosure, as shown in FIG. 1, the oil return component includes a main cylinder body 2, two ends of the main cylinder body 2 along the second direction L2 are a third end 2a and a fourth end 2b, and the third end 2a and the fourth end 2b are both provided with an oil return area, and the oil return port 113 is connected with the oil return area of the third end 2a and the oil return area of the fourth end 2b respectively.

[0054] Through the above arrangement, the oil return pump assembly 1 can simultaneously return oil from the third end 2a and the fourth end 2b of the main cylinder body 2, which can improve the oil return efficiency and stability of the main cylinder body 2, thereby improving the circulation speed of the lubricating oil and ensuring the lubrication effect.

[0055] In some embodiments of the present disclosure, referring to FIGS. 6-8, the oil return pump assembly 1 includes a third oil return pump 1121 and a fourth oil return pump 1122, the third oil return pump 1121 has at least one third oil return port 11211, and the fourth oil return pump 1122 has at least one fourth oil return port 11221, the at least one third oil return port 11211 is connected with the oil return area of the third end 2a, and the at least one fourth oil return port 11221 is connected with the oil return area of the fourth end 2b.

[0056] For example, referring to FIGS. 6-8, the oil return pump assembly 1 includes a cylinder body oil return pump 112, the cylinder body oil return pump 112 includes a third oil return pump 1121 and a fourth oil return pump 1122, the third oil return pump 1121 and the fourth oil return pump 1122 are arranged apart along the first direction L1, the third oil return pump 1121 is arranged close to the third end 2a and has a third oil return port 11211, and the fourth oil return pump 1122 is arranged close to the fourth end 2b and has a fourth oil return port 11221.

[0057] For example, the third oil return port 11211 of the third oil return pump 1121 can be connected with the oil return area of the third end 2a, so that the third oil return pump 1121 can be used to return oil located at the third end 2a, and the fourth oil return pump 1122 can be connected with the oil return area of the fourth end 2b, so that the fourth oil return pump 1122 can be used to return oil located at the fourth end 2b. Through the above arrangement, the flow path of the lubricating oil can be shortened, and the oil return efficiency is improved.

[0058] In some embodiments of the present disclosure, referring to FIGS. 6-8, the third end 2a is provided with at least two oil return areas, and the third oil return pump 1121 is provided with at least two third oil return ports 11211, and the at least two third oil return ports 11211 are connected with the at least two oil return areas of the third end 2a one by one.

[0059] For example, two oil return areas can be provided on the third end 2a, and two third oil return ports 11211 can be provided on the third oil return pump 1121, and the two oil return areas of the third end 2a are connected with the two third oil return ports 11211 one by one.

[0060] Through the above arrangement, the oil return efficiency of the third oil return pump 1121 can be improved, and the third oil return pump 1121 is less likely to be blocked and sucked, thereby improving the reliability of the third oil return pump 1121.

[0061] In some embodiments of the present disclosure, referring to FIGS. 6-8, the fourth end 2b is provided with at least two oil return areas, and the fourth oil return pump 1122 is provided with at least two fourth oil return ports 11221, which are connected to the at least two oil return areas of the fourth end 2b in one-to-one correspondence.

[0062] For example, the fourth end 2b can be provided with two oil return areas, and the fourth oil return pump 1122 can be provided with two fourth oil return ports 11221, which are connected to the two oil return areas of the fourth end 2b in one-to-one correspondence.

[0063] Through the above arrangement, the oil return efficiency of the fourth oil return pump 1122 can be improved, and the fourth oil return pump 1122 is less likely to be blocked and sucked, thereby improving the reliability of the fourth oil return pump 1122.

[0064] In some embodiments of the present disclosure, as shown in FIGS. 6, 7 and 9, the at least one third oil return port 11211 includes at least two third oil return ports 11211, one of the at least two third oil return ports 11211 is connected to the oil return area of the third end 2a, and the other of the at least two third oil return ports 11211 is connected to the oil return area of the fourth end 2b, so that the third oil return pump 1121 can simultaneously return oil to the third end 2a and the fourth end 2b of the main cylinder block 2. Thus, the probability of the third oil return pump 1121 being sucked can be reduced, and the reliability of the third oil return pump 1121 can be improved.

[0065] In some embodiments of the present disclosure, the at least one fourth oil return port 11221 includes at least two fourth oil return ports 11221, one of the at least two fourth oil return ports 11221 is connected to the oil return area of the third end 2a, and the other of the at least two fourth oil return ports 11221 is connected to the oil return area of the fourth end 2b.

[0066] The oil return area of the third end 2a includes a first sub-area and a second sub-area arranged in sequence along the first direction L1, the first sub-area is connected to one of the third oil return ports 11211, and the second sub-area is connected to one of the fourth oil return ports 11221.

[0067] The oil return area of the fourth end 2b includes a third sub-area and a fourth sub-area oppositely arranged along the first direction L1, the third sub-area is connected with the other fourth oil return port 11221, and the fourth sub-area is connected with the other third oil return port 11211.

[0068] For example, the first direction L1 and the second direction L2 are arranged vertically.

[0069] For example, referring to FIGS. 6, 7 and 9, the at least one fourth oil return port 11221 includes at least two fourth oil return ports 11221, one of the at least two fourth oil return ports 11221 is connected with the oil return area of the third end 2a, and the other of the at least two fourth oil return ports 11221 is connected with the oil return area of the fourth end 2b, so that the fourth oil return pump 1122 can simultaneously return oil to the third end 2a and the fourth end 2b of the main cylinder block 2.

[0070] Therefore, the probability of air suction of the fourth oil return pump 1122 can be reduced, and the reliability of the fourth oil return pump 1122 can be improved.

[0071] For example, the oil return area of the third end 2a can include a first sub-area and a second sub-area, the first sub-area and the second sub-area are oppositely arranged along the first direction L1, the first sub-area is connected with one third oil return port 11211, so that the third oil return pump 1121 can return oil to the first sub-area, and the second sub-area is connected with one fourth oil return port 11221, so that the fourth oil return pump 1122 can return oil to the second sub-area.

[0072] Meanwhile, the oil return area of the fourth end 2b can include a third sub-area and a fourth sub-area, the third sub-area and the fourth sub-area are oppositely arranged along the first direction L1, the first sub-area and the fourth sub-area are located at opposite corners of the main cylinder block 2, and the second sub-area and the third sub-area are located at opposite corners of the main cylinder block 2. The third sub-area is connected with the other fourth oil return port 11221, so that the fourth oil return pump 1122 can return oil to the third sub-area, and the fourth sub-area is connected with the other third oil return port 11211, so that the third oil return pump 1121 can return oil to the fourth sub-area.

[0073] It should be noted that the first direction L1 and the second direction L2 are arranged vertically. For example, when the second direction L2 is the left-right direction, the first direction L1 can be the front-rear direction; or when the second direction L2 is the front-rear direction, the first direction L1 can be the left-right direction.

[0074] Through the above arrangement, at least two third oil return ports 11211 of the third oil return pump 1121 are arranged at diagonal positions of the main cylinder body 2, and at least two fourth oil return ports 11221 of the fourth oil return pump 1122 are also arranged at diagonal positions of the main cylinder body 2. In each extreme attitude (uphill, downhill, left tilt, right tilt), the oil return stability of the third oil return pump 1121 and the fourth oil return pump 1122 can be ensured, which is beneficial to avoid problems such as cylinder flooding, dry grinding, abnormal noise, and insufficient oil pressure caused by poor oil return, and improves the reliability of the oil return pump assembly 1.

[0075] In some embodiments of the present disclosure, the second direction L2 can be a front-rear direction, so that the oil return pump assembly 1 can return oil to the main cylinder body 2 from both front and rear ends; or the second direction L2 can be a left-right direction, so that the oil return pump assembly 1 can return oil to the main cylinder body 2 from both left and right ends. Thus, it is beneficial to meet different working conditions.

[0076] In some embodiments of the present disclosure, as shown in FIG. 1, the main cylinder body 2 includes a left cylinder body 21 and a right cylinder body 22, the left cylinder body 21 and the right cylinder body 22 are arranged along the left-right direction, and the left cylinder body 21 and the right cylinder body 22 define a crankshaft cavity 23 for mounting a crankshaft; the second direction L2 is the left-right direction, the third end 2a is arranged on the left cylinder body 21, and the fourth end 2b is arranged on the right cylinder body 22.

[0077] For example, referring to FIG. 1, the main cylinder body 2 includes a left cylinder body 21 and a right cylinder body 22, the left cylinder body 21 and the right cylinder body 22 are arranged along the left-right direction, and the left cylinder body 21 and the right cylinder body 22 define a crankshaft cavity 23 therebetween, for example, the fixing manner of the left cylinder body 21 and the right cylinder body 22 includes but is not limited to welding, or bolt connection, or clamping, etc.

[0078] The crankshaft is rotatably mounted in the crankshaft cavity 23, and the left cylinder body 21 and the right cylinder body 22 are each provided with a combustion chamber, and the combustion chamber can be provided with a plurality of combustion chambers, for example, the left cylinder body 21 is provided with two combustion chambers, and the right cylinder body 22 is provided with two combustion chambers, the four combustion chambers are distributed along the axial direction of the crankshaft and are spaced apart, and each combustion chamber extends along the horizontal direction, for example, each combustion chamber is respectively provided with a piston, and the piston is connected to the crankshaft through a connecting rod, so that the piston can move along the extension direction of the combustion chamber to drive the crankshaft to rotate.

[0079] Since the combustion chamber extends along the horizontal direction, the piston moves along the horizontal direction, which can reduce the space occupation of the combustion chamber and the piston in the up-down direction, thereby making the overall height of the engine 100 lower and the length shorter, and further making the center of gravity of the engine 100 lower, to improve the driving stability of the vehicle during driving.

[0080] For example, the second direction L2 is a left-right direction, the third end 2a can be arranged on the left cylinder block 21, and the fourth end 2b can be arranged on the right cylinder block 22, so that the oil return pump assembly 1 can return oil to the left cylinder block 21 and the right cylinder block 22, respectively.

[0081] It can be understood that, since the main cylinder block 2 has a large size in the left-right direction, by arranging the third end 2a and the fourth end 2b on the left and right sides of the main cylinder block 2, respectively, the oil return efficiency of the oil return pump assembly 1 to the main cylinder block 2 can be ensured, and the oil return dead angle of the main cylinder block 2 can be eliminated, thereby improving the oil return effect of the oil return pump assembly 1.

[0082] In some embodiments of the present disclosure, referring to FIG. 1, the left cylinder block 21 includes a left cylinder body 211 and a left cylinder cover 212, the left cylinder cover 212 is arranged on the side of the left cylinder body 211 away from the right cylinder block 22, and the third end 2a is arranged on the left cylinder cover 212.

[0083] For example, referring to FIG. 1, the left cylinder block 21 includes a left cylinder body 211 and a left cylinder cover 212, the left cylinder cover 212 is arranged on the side of the left cylinder body 211 away from the right cylinder block 22 (i.e., the left side of the left cylinder body 211), and the left cylinder cover 212 is used to block the combustion chamber of the left cylinder block 21 on the side of the left cylinder block 21 away from the right cylinder block 22.

[0084] The left cylinder cover 212 is provided with a first chamber and a second chamber in communication with corresponding combustion chambers, the first chamber is used to place an oil injector, and the second chamber is used to place a spark plug, the oil injector is used to spray oil into the combustion chamber, and the spark plug is used to ignite the combustible mixture in the combustion chamber to make the combustible mixture burn, thereby driving the piston to move and further rotate the crankshaft. For example, the third end 2a can be arranged on the left cylinder cover 212, so that the oil return pump assembly 1 can return oil from the left cylinder cover 212.

[0085] Through the above arrangement, the connection difficulty of the main cylinder block 2 and the oil return pump assembly 1 can be reduced, and the oil return effect of the oil return pump assembly 1 to the main cylinder block 2 can be improved.

[0086] In some embodiments of the present disclosure, referring to FIG. 1, the right cylinder block 22 includes a right cylinder body 221 and a right cylinder cover 222, the right cylinder cover 222 is arranged on the side of the right cylinder body 221 away from the left cylinder block 21, and the fourth end 2b is arranged on the right cylinder cover 222.

[0087] For example, referring to FIG. 1, the right cylinder block 22 includes a right cylinder body 221 and a right cylinder cover 222, the right cylinder cover 222 is arranged on the side of the right cylinder body 221 away from the left cylinder block 21 (i.e., the right side of the right cylinder body 221), and the right cylinder cover 222 is used to block the combustion chamber of the right cylinder block 22 on the side of the right cylinder block 22 away from the left cylinder block 21.

[0088] The right cylinder head 222 is provided with a first chamber and a second chamber in communication with the corresponding combustion chamber. The first chamber is used to place the oil injector, and the second chamber is used to place the spark plug. The oil injector is used to spray oil into the combustion chamber, and the spark plug is used to ignite the combustible mixture in the combustion chamber to make the combustible mixture burn, thereby driving the piston to move and in turn rotating the crankshaft. For example, the fourth end 2b can be arranged on the right cylinder head 222, so that the oil return pump assembly 1 can return oil from the right cylinder head 222.

[0089] Through the above arrangement, the connection difficulty of the main cylinder body 2 and the oil return pump assembly 1 can be reduced, and the oil return effect of the oil return pump assembly 1 on the main cylinder body 2 can be improved.

[0090] In some embodiments of the present disclosure, the components to be returned to oil include the main cylinder body 2 and the oil pan 3. The oil pan 3 is arranged at the bottom of the main cylinder body 2. At least one of the oil pan 3 and the main cylinder body 2 is provided with at least two oil return areas.

[0091] For example, the oil pan 3 is provided with at least two oil return areas. The at least two oil return areas on the oil pan 3 are located at opposite ends of the oil pan 3. The oil return ports 113 are respectively connected to the oil return areas at the opposite ends of the oil pan 3.

[0092] For example, the main cylinder body 2 is provided with at least two oil return areas. The at least two oil return areas on the main cylinder body 2 are located at opposite ends of the main cylinder body 2. The oil return ports 113 are respectively connected to the oil return areas at the opposite ends of the main cylinder body 2.

[0093] For example, the main cylinder body 2 and the oil pan 3 are each provided with at least two oil return areas. The oil return areas of the main cylinder body 2 and the oil return areas of the oil pan 3 are located at opposite ends. The oil return ports 113 are respectively connected to the oil return areas of the main cylinder body 2 and the oil return areas of the oil pan 3 at the opposite ends.

[0094] For example, referring to FIG. 1, the components to be returned to oil include the main cylinder body 2 and the oil pan 3. The oil pan 3 is arranged at the lower part of the main cylinder body 2 and communicates with the main cylinder body 2, so as to close the main cylinder body 2 at the lower part of the main cylinder body 2 and prevent impurities from entering the lower part of the main cylinder body 2. The oil pan 3 can be used to temporarily collect and store the lubricating oil returned from the parts (such as the crankshaft surface, the intake VVT, the exhaust VVT, etc.) requiring lubrication in the main cylinder body 2. The oil pan 3 and the main cylinder body 2 are each provided with an oil return area, so that the oil return pump assembly 1 can return oil to the oil pan 3 and the main cylinder body 2 respectively.

[0095] For example, as shown in FIG. 4, the oil pan 3 is provided with at least two oil return areas. The at least two oil return areas on the oil pan 3 are located at opposite ends of the oil pan 3. The oil return ports 113 are respectively connected to the at least two oil return areas on the oil pan 3, so that the oil return pump assembly 1 can return oil from the opposite ends of the oil pan 3.

[0096] Alternatively, as shown in FIG. 8, the main cylinder body 2 is provided with at least two oil return areas, the at least two oil return areas of the main cylinder body 2 are located at opposite ends of the main cylinder body 2, and the oil return port 113 is connected to the at least two oil return areas of the main cylinder body 2, so that the oil return pump assembly 1 can return oil from the opposite ends of the main cylinder body 2.

[0097] Alternatively, as shown in FIGS. 4 and 8, the oil pan 3 and the main cylinder body 2 are respectively provided with at least two oil return areas, the at least two oil return areas of the oil pan 3 are located at opposite ends of the oil pan 3, the at least two oil return areas of the main cylinder body 2 are also located at opposite ends of the main cylinder body 2, the oil return port 113 can be connected to the at least two oil return areas of the oil pan 3, so that the oil return pump assembly 1 can return oil from the opposite ends of the oil pan 3, and the oil return port 113 can also be connected to the at least two oil return areas of the main cylinder body 2, so that the oil return pump assembly 1 can return oil from the opposite ends of the main cylinder body 2.

[0098] It should be noted that the at least two oil return areas of the oil pan 3 can be arranged opposite to each other along the first direction L1, and the plurality of oil return areas of the oil return pump assembly 1 can be arranged opposite to each other along the second direction L2, and the first direction L1 intersects with the second direction L2; or the at least two oil return areas of the oil pan 3 and the plurality of oil return areas of the oil return pump assembly 1 can be arranged opposite to each other along the first direction L1. Through the above arrangement, different working conditions can be met, and the practicability of the engine 100 is improved.

[0099] In some embodiments of the present disclosure, the components to be returned with oil include the main cylinder body 2 and the oil pan 3, the oil pan 3 is arranged at the bottom of the main cylinder body 2, and the oil pan 3 and the main cylinder body 2 are both provided with oil return areas; the oil pan 3 is provided with at least two oil return areas, and the at least two oil return areas of the oil pan 3 are located at opposite ends of the oil pan 3; the main cylinder body 2 is provided with at least two oil return areas, and the at least two oil return areas of the main cylinder body 2 are located at opposite ends of the main cylinder body 2.

[0100] The oil return pump assembly 1 includes a first oil return pump 1111, a second oil return pump 1112, and a cylinder oil return pump 112, the first oil return pump 1111 is connected to the oil return area at one end of the oil pan 3 opposite to the other end, and the second oil return pump 1112 is connected to the oil return area at the other end of the oil pan 3 opposite to the one end; the cylinder oil return pump 112 is connected to the oil return areas at opposite ends of the main cylinder body 2, respectively.

[0101] For example, referring to FIGS. 1-4 and 6-8, the oil return component includes a main cylinder body 2 and an oil pan 3, the oil pan 3 is arranged at a lower portion of the main cylinder body 2 and communicates with the main cylinder body 2, so as to close the main cylinder body 2 at the lower portion of the main cylinder body 2, prevent the lower portion of the main cylinder body 2 from entering impurities, and the oil pan 3 can be used to temporarily collect and store the lubricating oil returned from the positions requiring lubrication (such as the crankshaft surface, intake VVT, exhaust VVT, etc.) in the main cylinder body 2. The oil pan 3 and the main cylinder body 2 are both provided with an oil return area, so that the oil return pump assembly 1 can return the oil pan 3 and the main cylinder body 2 through the oil return area, respectively.

[0102] For example, the oil pan 3 is provided with at least two oil return areas, the at least two oil return areas on the oil pan 3 are located at opposite ends of the oil pan 3, and the oil return ports 113 are respectively connected to the at least two oil return areas on the oil pan 3, so that the oil return pump assembly 1 can return the oil from the opposite ends of the oil pan 3.

[0103] For example, the main cylinder body 2 is provided with at least two oil return areas, the at least two oil return areas on the main cylinder body 2 are located at opposite ends of the main cylinder body 2, and the oil return ports 113 are respectively connected to the at least two oil return areas on the main cylinder body 2, so that the oil return pump assembly 1 can return the oil from the opposite ends of the main cylinder body 2.

[0104] For example, the oil return pump assembly 1 includes a pan oil return pump 111 and a cylinder body oil return pump 112, the pan oil return pump 111 includes a first oil return pump 1111 and a second oil return pump 1112, the first oil return pump 1111 is connected to the oil return area at one end of the oil pan 3, and the second oil return pump 1112 is connected to the oil return area at the other end of the oil pan 3, so that the oil return pump assembly 1 can return the oil from the opposite ends of the oil pan 3 through the first oil return pump 1111 and the second oil return pump 1112, respectively.

[0105] In addition, the cylinder body oil return pump 112 can be respectively connected to the oil return areas at the opposite ends of the main cylinder body 2, so that the cylinder body oil return pump 112 can return the oil from the opposite ends of the oil pan 3.

[0106] It can be understood that by arranging the pan oil return pump 111 to return the oil from the opposite ends of the oil pan 3 and arranging the cylinder body oil return pump 112 to return the oil from the opposite ends of the main cylinder body 2, the oil return effect of the oil return pump assembly 1 on the oil pan 3 and the main cylinder body 2 can be ensured, and the design rationality of the engine 100 is improved.

[0107] In some embodiments of the present disclosure, referring to FIGS. 2-4, the opposite ends of the oil pan 3 are divided into a first end 3a and a second end 3b, the first end 3a and the second end 3b are arranged opposite to each other along the front-rear direction; the first oil return pump 1111 and the second oil return pump 1112 are arranged in the front-rear direction, and the cylinder body oil return pump 112 is between the first oil return pump 1111 and the second oil return pump 1112.

[0108] For example, referring to FIGS. 2-4, opposite ends of the oil pan 3 can be respectively set as a first end 3a and a second end 3b, and the first end 3a and the second end 3b are oppositely arranged along the front-rear direction.

[0109] For example, the first oil return pump 1111 and the second oil return pump 1112 can be arranged along the front-rear direction, the first oil return pump 1111 is connected to the oil return area of the first end 3a, and the second oil return pump 1112 is connected to the oil return area of the second end 3b, so that the oil return pump assembly 1 can return oil from the front and rear ends of the oil pan 3.

[0110] In addition, the cylinder oil return pump 112 can be arranged between the first oil return pump 1111 and the second oil return pump 1112, and the cylinder oil return pump 112 is connected to the master cylinder 2, so that the cylinder oil return pump 112 can return oil to the master cylinder 2.

[0111] Through the above arrangement, the structure of the oil return pump assembly 1 is more symmetrical, which is beneficial to improve the balance performance of the engine 100, and is beneficial to shorten the distance between the oil return port 113 and the oil return area, and ensure the oil return effect of the oil return pump assembly 1.

[0112] In addition, since the size of the oil pan 3 along the front-rear direction is large, by arranging the two ends of the oil pan 3 along the front-rear direction as the first end 3a and the second end 3b, the oil return effect of the oil return pump assembly 1 on the oil pan 3 can be better guaranteed.

[0113] In some embodiments of the present disclosure, as shown in FIG. 2, the oil return pump assembly 1 is installed in the oil pan 3, the first oil return port 11111 of the first oil return pump 1111 is arranged on the bottom wall 1a of the oil return pump assembly 1, and the second oil return port 11121 of the second oil return pump 1112 is also arranged on the bottom wall 1a of the oil return pump assembly 1. Thus, the oil return pump assembly 1 directly sucks oil from the oil pan 3, which can simplify the pipeline arrangement, shorten the oil path, reduce the pressure loss, and improve the pressure response.

[0114] In some embodiments, the distance between the bottom wall 1a of the oil return pump assembly 1 and the bottom surface of the oil pan 3 can be 5-10 mm, such as 5 mm, 6 mm, 7 mm, 8 mm, 9 mm, 10 mm, etc. Thus, the first oil return pump 1111 and the second oil return pump 1112 can better extract the lubricating oil in the oil pan 3, and the reliability of the engine 100 is improved.

[0115] In some embodiments of the present disclosure, referring to FIG. 1, the main cylinder block 2 includes a left cylinder block 21 and a right cylinder block 22, the left cylinder block 21 and the right cylinder block 22 are arranged along the left-right direction, and the left cylinder block 21 and the right cylinder block 22 define a crankshaft cavity 23 for mounting a crankshaft; the left cylinder block 21 is provided with an oil return area, the oil return area of the left cylinder block 21 includes a first sub-area and a second sub-area arranged opposite along the front-rear direction, the right cylinder block 22 is provided with an oil return area, and the oil return area of the right cylinder block 22 includes a third sub-area and a fourth sub-area arranged opposite along the front-rear direction.

[0116] Referring to FIGS. 6-8, the cylinder block oil return pump 112 includes a third oil return pump 1121 and a fourth oil return pump 1122, the third oil return pump 1121 and the fourth oil return pump 1122 are sequentially arranged between the first oil return pump 1111 and the second oil return pump 1112 along the front-rear direction, the third oil return pump 1121 includes two third oil return ports 11211, the first sub-area is connected with one of the third oil return ports 11211, and the fourth sub-area is connected with the other third oil return port 11211.

[0117] The fourth oil return pump 1122 includes two fourth oil return ports 11221, the second sub-area is connected with one of the fourth oil return ports 11221, and the third sub-area is connected with the other fourth oil return port 11221.

[0118] For example, referring to FIG. 1, the main cylinder block 2 includes a left cylinder block 21 and a right cylinder block 22, the left cylinder block 21 and the right cylinder block 22 are arranged along the left-right direction, and the left cylinder block 21 and the right cylinder block 22 define a crankshaft cavity 23, for example, the fixing mode of the left cylinder block 21 and the right cylinder block 22 includes but is not limited to welding, or bolt connection, or clamping, etc.

[0119] The crankshaft cavity 23 is rotatably mounted with a crankshaft, and the left cylinder block 21 and the right cylinder block 22 are each provided with a combustion chamber, and the combustion chamber can be provided with a plurality of, for example, the left cylinder block 21 is provided with two combustion chambers, the right cylinder block 22 is provided with two combustion chambers, the four combustion chambers are distributed along the axial direction of the crankshaft and are spaced apart, and each combustion chamber extends along the horizontal direction, for example, each combustion chamber is respectively provided with a piston, and the piston is connected with the crankshaft through a connecting rod, so that the piston can move along the extension direction of the combustion chamber to drive the crankshaft to rotate.

[0120] Since the combustion chamber extends along the horizontal direction, the piston moves along the horizontal direction, so that the space occupation of the combustion chamber and the piston arranged in the up-down direction can be reduced, thereby making the overall height of the engine 100 lower and the length shorter, and further making the center of gravity of the engine 100 lower, so as to improve the driving stability of the vehicle during driving.

[0121] For example, the left cylinder body 21 can be provided with an oil return area, the oil return area of the left cylinder body 21 includes a first sub-area and a second sub-area, the first sub-area and the second sub-area are oppositely arranged along the front-rear direction, the right cylinder body 22 is also provided with an oil return area, the oil return area of the right cylinder body 22 includes a third sub-area and a fourth sub-area, the third sub-area and the fourth sub-area are oppositely arranged along the front-rear direction, the first sub-area and the fourth sub-area are located at opposite corners of the main cylinder body 2, and the second sub-area and the third sub-area are located at opposite corners of the main cylinder body 2.

[0122] Furthermore, the cylinder oil return pump 112 can include a third oil return pump 1121 and a fourth oil return pump 1122, and the third oil return pump 1121 and the fourth oil return pump 1122 are sequentially arranged between the first oil return pump 1111 and the second oil return pump 1112 along the front-rear direction.

[0123] The third oil return pump 1121 includes two third oil return ports 11211, one of the third oil return ports 11211 is connected to the first sub-area, so that the third oil return pump 1121 can return oil to the first sub-area, and the other third oil return port 11211 is connected to the fourth sub-area, so that the third oil return pump 1121 can return oil to the fourth sub-area.

[0124] The fourth oil return pump 1122 includes two fourth oil return ports 11221, one of the fourth oil return ports 11221 is connected to the second sub-area, so that the fourth oil return pump 1122 can return oil to the second sub-area, and the other fourth oil return port 11221 is connected to the third sub-area, so that the fourth oil return pump 1122 can return oil to the third sub-area.

[0125] Through the above arrangement, the two third oil return ports 11211 of the third oil return pump 1121 can be located at opposite corners of the main cylinder body 2, and the two fourth oil return ports 11221 of the fourth oil return pump 1122 can also be located at opposite corners of the main cylinder body 2, so that the oil return stability of the third oil return pump 1121 and the fourth oil return pump 1122 can be ensured in each limit attitude (uphill, downhill, left tilt, right tilt), and problems such as cylinder flooding, dry grinding, abnormal noise and insufficient oil pressure caused by poor oil return can be avoided, thereby improving the reliability of the oil return pump assembly 1.

[0126] In some embodiments of the present disclosure, referring to FIG. 1, the left cylinder body 21 includes a left cylinder body 211 and a left cylinder cover 212, the left cylinder cover 212 is arranged on the side of the left cylinder body 211 away from the right cylinder body 22, and the oil return area is arranged on the left cylinder cover 212; the right cylinder body 22 includes a right cylinder body 221 and a right cylinder cover 222, the right cylinder cover 222 is arranged on the side of the right cylinder body 221 away from the left cylinder body 21, and the oil return area is arranged on the right cylinder cover 222. In the projection plane perpendicular to the up-down direction, the projection area of the left cylinder body 211 and the right cylinder body 221 covers the projection area of the oil pan 3.

[0127] For example, referring to FIG. 1, the left cylinder body 21 includes a left cylinder main body 211 and a left cylinder head 212, the left cylinder head 212 is arranged on the side of the left cylinder main body 211 away from the right cylinder body 22 (i.e. the left side of the left cylinder main body 211), and the left cylinder head 212 is used to seal the combustion chamber of the left cylinder body 21 on the side of the left cylinder body 21 away from the right cylinder body 22.

[0128] The left cylinder head 212 is provided with a first chamber and a second chamber in communication with the corresponding combustion chamber, the first chamber is used to place an oil injector, and the second chamber is used to place a spark plug, the oil injector is used to spray oil into the combustion chamber, and the spark plug is used to ignite the combustible mixture in the combustion chamber to make the combustible mixture burn to drive the piston to move, thereby realizing the rotation of the crankshaft. For example, the third end 2a can be arranged on the left cylinder head 212, so that the oil return pump assembly 1 can return oil from the left cylinder head 212.

[0129] The right cylinder body 22 includes a right cylinder main body 221 and a right cylinder head 222, the right cylinder head 222 is arranged on the side of the right cylinder main body 221 away from the left cylinder body 21 (i.e. the right side of the right cylinder main body 221), and the right cylinder head 222 is used to seal the combustion chamber of the right cylinder body 22 on the side of the right cylinder body 22 away from the left cylinder body 21.

[0130] The right cylinder head 222 is provided with a first chamber and a second chamber in communication with the corresponding combustion chamber, the first chamber is used to place an oil injector, and the second chamber is used to place a spark plug, the oil injector is used to spray oil into the combustion chamber, and the spark plug is used to ignite the combustible mixture in the combustion chamber to make the combustible mixture burn to drive the piston to move, thereby realizing the rotation of the crankshaft. For example, the fourth end 2b can be arranged on the right cylinder head 222, so that the oil return pump assembly 1 can return oil from the right cylinder head 222.

[0131] In addition, in the projection plane perpendicular to the up-down direction, the projection area of the left cylinder main body 211 and the right cylinder main body 221 can cover the projection area of the oil pan 3, i.e. the overall size of the oil pan 3 is smaller than the overall size of the main cylinder body 2.

[0132] It can be understood that by arranging the main cylinder body 2, the cylinder head can be connected with the oil return pump assembly 1, the connection difficulty between the main cylinder body 2 and the oil return pump assembly 1 can be reduced, and the oil return effect of the oil return pump assembly 1 on the main cylinder body 2 can be improved. In addition, by arranging the overall size of the oil pan 3 to be smaller than the overall size of the main cylinder body 2, the oil return difficulty of the oil pan 3 can be reduced, and it is ensured that the oil return pump assembly 1 can fully return oil to the oil pan 3.

[0133] In some embodiments of the present disclosure, as shown in FIGS. 10-12, the oil return pump assembly 1 comprises at least one oil return pump 11, which comprises a housing 12, a first rotating member and a second rotating member. The housing 12 is provided with a receiving cavity 121. The housing 12 is provided with a first oil inlet passage 122, a second oil inlet passage 123 and an oil outlet passage 124, which are in communication with the receiving cavity 121. The first oil inlet passage 122 and the second oil inlet passage 123 are respectively located on opposite sides of the housing 12 and are each formed with an oil return port 113.

[0134] The first rotating member is arranged in the receiving cavity 121 and is configured to guide oil from the first oil inlet passage 122 to the oil outlet passage 124 when rotating. The second rotating member is arranged in the receiving cavity 121 and is configured to guide oil from the second oil inlet passage 123 to the oil outlet passage 124 when rotating.

[0135] In some embodiments, as shown in FIGS. 10-12, the oil return pump assembly 1 comprises at least one oil return pump 11, which comprises a housing 12. The housing 12 is formed with a receiving cavity 121. The housing 12 is further provided with a first oil inlet passage 122, a second oil inlet passage 123 and an oil outlet passage 124, which are in communication with the receiving cavity 121. The oil outlet passage 124 is located between the first oil inlet passage 122 and the second oil inlet passage 123. The first oil inlet passage 122 and the second oil inlet passage 123 are each formed with an oil return port 113, which is configured to communicate with a component (e.g., the main cylinder block 2 or the oil pan 3) of the engine 100 to be returned. The oil outlet passage 124 is configured to communicate with an oil tank.

[0136] Meanwhile, the first oil inlet passage 122 and the second oil inlet passage 123 can be arranged on opposite sides of the housing 12, so that the first oil inlet passage 122 and the second oil inlet passage 123 can better communicate with the component to be returned.

[0137] For example, the first oil inlet passage 122 and the second oil inlet passage 123 can be arranged on left and right sides of the housing 12, respectively, and are configured to respectively communicate with left and right ends of the component to be returned. Alternatively, the first oil inlet passage 122 and the second oil inlet passage 123 can be arranged on front and back sides of the housing 12, respectively, and are configured to respectively communicate with front and back ends of the component to be returned.

[0138] For example, the oil return pump 11 further comprises a first rotating member and a second rotating member, the first rotating member is rotatably arranged in the accommodating cavity 121 and is located between the oil outlet channel 124 and the first oil inlet channel 122, when the first rotating member rotates in the third direction, the oil outlet channel 124 is located downstream of the first oil inlet channel 122, and the first rotating member can guide the oil from the first oil inlet channel 122 to the oil outlet channel 124; the second rotating member is rotatably arranged in the accommodating cavity 121 and is located between the oil outlet channel 124 and the second oil inlet channel 123, when the second rotating member rotates in the fourth direction, the oil outlet channel 124 is located downstream of the second oil inlet channel 123, and the second rotating member can guide the oil from the second oil inlet channel 123 to the oil outlet channel 124.

[0139] It should be noted that the first rotating member and the second rotating member can be any one of a gear, a ratchet or a screw rod. In addition, one of the third direction and the fourth direction is a clockwise direction, and the other is a counterclockwise direction.

[0140] In the working process, the first rotating member can be driven to rotate in the third direction and the second rotating member can be driven to rotate in the fourth direction, so that the lubricating oil in the oil return component can flow into the accommodating cavity 121 through the first oil inlet channel 122 and the second oil inlet channel 123 respectively, the oil flowing from the first oil inlet channel 122 can flow into the oil outlet channel 124 under the driving of the first rotating member, the oil flowing from the second oil inlet channel 123 can flow into the oil outlet channel 124 under the driving of the second rotating member, and the oil flowing from the first oil inlet channel 122 and the oil flowing from the second oil inlet channel 123 can converge in the oil outlet channel 124 and flow to the oil can through the oil outlet channel 124.

[0141] Through the above arrangement, the flow path can be simplified, the structural complexity of the oil return pump 11 can be reduced, the oil can flow more stably, and the oil return efficiency of the oil return pump 11 is improved. In addition, by arranging the first oil inlet channel 122 and the second oil inlet channel 123 on opposite sides of the housing 12, the first oil inlet channel 122 and the second oil inlet channel 123 can correspond to the opposite side walls of the oil return component respectively, which is beneficial to reduce the installation difficulty of the oil return pump assembly 1.

[0142] In some embodiments of the present disclosure, as shown in FIG. 10, the inlet end 124a of the oil outlet channel 124 can be arranged below the first rotating member and the second rotating member, so that the height of the inlet end 124a of the oil outlet channel 124 is lower than that of the first oil inlet channel 122 and the second oil inlet channel 123, so that the oil flowing into the accommodating cavity 121 can flow downward into the oil outlet channel 124. Thus, the flow process of the oil can be more smooth, and the backflow of the oil can be prevented, and the design rationality of the oil return pump 11 is improved.

[0143] In some embodiments of the present disclosure, the first rotating member and the second rotating member are formed as gears and are engaged, and the inlet end 124a of the oil outlet channel 124 is located directly below the engagement position of the first rotating member and the second rotating member.

[0144] For example, referring to FIG. 10, the first rotating member and the second rotating member are formed as gears and are engaged, adjacent two teeth of the gears form an oil conveying space 17 that rotates with the gears, the volume of the oil conveying space 17 decreases when the first rotating member and the second rotating member are engaged and increases when the first rotating member and the second rotating member are disengaged, the oil conveying space 17 can store oil and drive the oil to move synchronously, and the oil in the oil conveying space 17 can be pressed to flow out when the first rotating member and the second rotating member are engaged.

[0145] For example, the inlet end 124a of the oil outlet channel 124 can be located directly below the engagement position of the first rotating member and the second rotating member and opposite to the side where the first rotating member and the second rotating member are engaged, so that the oil flowing out of the oil conveying space 17 can directly flow to the inlet end 124a of the oil outlet channel 124 to flow out to the oil can through the oil outlet channel 124.

[0146] For example, the first oil inlet channel 122 communicates with the oil conveying space 17 on the first rotating member, and the first rotating member can transport the oil flowing into the first oil inlet channel 122 to the engagement position of the first rotating member and the second rotating member through the oil conveying space 17; the second oil inlet channel 123 communicates with the oil conveying space 17 on the second rotating member, and the second rotating member can transport the oil flowing into the second oil inlet channel 123 to the engagement position of the first rotating member and the second rotating member through the oil conveying space 17.

[0147] Through the above arrangement, the oil flowing into the containing cavity 121 can stably flow to the oil outlet channel 124, improving the reliability of the oil return pump 11.

[0148] In some embodiments of the present disclosure, as shown in FIG. 10, the first oil inlet channel 122 can be arranged on the side of the first rotating member away from the second rotating member, and the second oil inlet channel 123 can be arranged on the side of the second rotating member away from the first rotating member. Through the above arrangement, the mutual influence between the first oil inlet channel 122 and the second oil inlet channel 123 can be reduced, improving the reliability of the oil return pump 11.

[0149] In some embodiments of the present disclosure, as shown in FIG. 10, the first rotating member and the second rotating member can be arranged to abut against the inner wall of the containing cavity 121, so that the inner wall of the containing cavity 121 can seal the oil conveying space 17 to a certain extent. Thus, the sealing property of the oil conveying space 17 is improved, and the oil conveying efficiency of the oil conveying space 17 is improved.

[0150] In some embodiments of the present disclosure, as shown in FIGS. 10-12, one of the first rotating member and the second rotating member can be set as the driving gear 13 and the other as the driven gear 14, for example, the first rotating member can be set as the driving gear 13 and the second rotating member as the driven gear 14. In this way, the first rotating member and the second rotating member can be driven to rotate synchronously by a single driving member, which is conducive to simplifying the structure of the oil return pump 11, reducing the cost, and improving the operation stability of the oil return pump 11.

[0151] In some embodiments of the present disclosure, the oil return pump 11 of the present disclosure further comprises a first rotating shaft 15 and a second rotating shaft 16, the first rotating shaft 15 being a driving shaft. The driving gear 13 and the driven gear 14 satisfy at least one of the following conditions: the driving gear 13 is sleeved on the first rotating shaft 15 and is in interference fit with the first rotating shaft 15, or the driven gear 14 is sleeved on the second rotating shaft 16 and is in key connection with the second rotating shaft 16.

[0152] For example, referring to FIGS. 10-11, the oil return pump 11 further comprises a first rotating shaft 15 and a second rotating shaft 16, which are arranged in parallel and at intervals.

[0153] For example, the first rotating shaft 15 can be set as the driving shaft, the driving gear 13 is sleeved on the outside of the first rotating shaft 15, and the inner diameter of the driving gear 13 is slightly smaller than the outer diameter of the first rotating shaft 15, so that the driving gear 13 can be in interference fit with the first rotating shaft 15.

[0154] In addition, the driven gear 14 can be sleeved on the second rotating shaft 16, the inner side of the driven gear 14 and the outer side of the second rotating shaft 16 are respectively provided with key grooves, and a flat key is arranged in the key grooves, so that the driven gear 14 and the second rotating shaft 16 are in key connection. Of course, the driven gear 14 and the second rotating shaft 16 can also be connected by splines.

[0155] Through the above arrangement, the continuous and stable transmission of driving force can be ensured, and the assembly difficulty of the oil return pump 11 can be reduced, and the oil return efficiency of the oil return pump 11 is improved.

[0156] In some embodiments of the present disclosure, as shown in FIGS. 10-12, the housing 12 is provided with two center holes 126 arranged in parallel and at intervals, the first rotating shaft 15 and the second rotating shaft 16 are respectively installed in the two center holes 126, and the first rotating shaft 15, the second rotating shaft 16 and the center hole 126 are all in clearance fit, which can ensure the positioning accuracy and also prevent excessive wear of the hole wall of the first rotating shaft 15, the second rotating shaft 16 and the center hole 126. In this way, the design rationality of the oil return pump 11 is improved.

[0157] In some embodiments of the present disclosure, as shown in FIG. 11, the oil return pump assembly 1 can be provided with a plurality of oil return pumps 11, and the plurality of oil return pumps 11 can share the first rotating shaft 15 and the second rotating shaft 16. In this way, the structure of the oil return pump assembly 1 can be simplified.

[0158] In some embodiments of the present disclosure, referring to FIGS. 10-12, the accommodating cavity 121 includes a first sub-cavity 1211 and a second sub-cavity 1212 that are in communication, and in the same cross section, the cross-sectional shape of the first sub-cavity 1211 and the cross-sectional shape of the second sub-cavity 1212 are both circular, and the inlet end 124a of the oil outlet passage 124 is located at the connection of the first sub-cavity 1211 and the second sub-cavity 1212, and the cross section is perpendicular to the rotation axis of the first rotating member.

[0159] For example, referring to FIGS. 10-12, the accommodating cavity 121 includes a first sub-cavity 1211 and a second sub-cavity 1212 that are in communication, the first rotating member is installed in the first sub-cavity 1211, and the second rotating member is installed in the second sub-cavity 1212. In the cross section perpendicular to the rotation axis of the first rotating member, the cross-sectional shape of the first sub-cavity 1211 and the cross-sectional shape of the second sub-cavity 1212 can be circular, the first rotating member is installed at the center of the first sub-cavity 1211, and the second rotating member is installed at the center of the first sub-cavity 1211, so that the accommodating cavity 121 can be more matched with the first rotating member and the second rotating member, and the flow stability of the oil can be improved.

[0160] For example, the inlet end 124a of the oil outlet passage 124 can be arranged at the connection of the first sub-cavity 1211 and the second sub-cavity 1212, so that the distance between the oil outlet passage 124 and the first sub-cavity 1211 is equal to the distance between the oil outlet passage 124 and the second sub-cavity 1212. In this way, the oil return effect of the oil return pump 11 as a whole can be ensured, and the design rationality of the oil return pump 11 is improved.

[0161] It should be noted that when the first rotating member and the second rotating member are both formed as gears, the connection of the first sub-cavity 1211 and the second sub-cavity 1212 has an overlapping area, and the first rotating member and the second rotating member can mesh in the overlapping area.

[0162] In some embodiments of the present disclosure, as shown in FIG. 10, the first sub-cavity 1211 and the second sub-cavity 1212 can be arranged in sequence along the left-right direction. In this way, the space of the engine 100 in the left-right direction can be fully utilized, the height dimension of the engine 100 can be reduced, and the arrangement requirements of the overall machine space can be met.

[0163] In some embodiments of the present disclosure, the connection between the first sub-cavity 1211 and the second sub-cavity 1212 is formed as a guide protrusion 125 extending towards the inlet end 124a of the oil outlet channel 124.

[0164] For example, referring to FIG. 12, the guide protrusions 125 can be formed at the connection between the first sub-cavity 1211 and the second sub-cavity 1212 close to the oil outlet channel 124, the two guide protrusions 125 are respectively located on both sides of the inlet end 124a of the oil outlet channel 124 and extend towards the inlet end 124a of the oil outlet channel 124, and the guide protrusions 125 are used to guide the oil flowing out of the oil conveying space 17 to the oil outlet channel 124. In this way, the flow stability of the oil can be improved, and the oil return efficiency can be improved.

[0165] In some embodiments of the present disclosure, as shown in FIG. 10, the first oil inlet channel 122 and the second oil inlet channel 123 are equidistantly arranged relative to the oil outlet channel 124, so that the distance between the oil outlet channel 124 and the first oil inlet channel 122 and the distance between the oil outlet channel 124 and the second oil inlet channel 123 are equal. In this way, the oil return effect of the first oil inlet channel 122 and the second oil inlet channel 123 can be guaranteed, and the design rationality of the oil return pump 11 is improved.

[0166] In some embodiments of the present disclosure, a filter screen can be installed in the first oil inlet channel 122 and the second oil inlet channel 123, and the filter screen can be fixed by interference fit or riveting. The filter screen filters the oil entering the oil return pump 11. In this way, the problem of blockage and wear caused by impurities entering the oil return pump 11 can be avoided.

[0167] Some embodiments of the present disclosure also provide a hybrid assembly 1000, as shown in FIG. 13, the hybrid assembly 1000 includes the generator 200, the battery and the engine 100 described above, the engine 100 and the generator 200 are power connected, the generator 200 is electrically connected with the battery, and the engine 100 is used to drive the generator 200 to generate electricity to charge the battery.

[0168] The hybrid assembly 1000 according to some embodiments of the present disclosure has high operation stability and good overall performance, which is beneficial to improve the overall performance of the vehicle.

[0169] Some embodiments of the present disclosure also provide a vehicle, as shown in FIG. 14, the vehicle 2000 includes: the engine 100 described above; or the hybrid assembly 1000 described above.

[0170] The vehicle 2000 according to some embodiments of the present disclosure has good overall operation stability, which is beneficial to improve the brand image.

[0171] In the description of the disclosure, it needs to be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the disclosure and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the disclosure.

[0172] In the description of the disclosure, "first feature" and "second feature" can include one or more of the features.

[0173] In the description of the disclosure, the meaning of "a plurality of" is two or more.

[0174] In the description of the disclosure, "above" or "below" the first feature of the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0175] In the description of the disclosure, "above", "over" and "on" the first feature of the second feature includes that the first feature is directly above and obliquely above the second feature, or only means that the first feature is higher than the second feature in horizontal height.

[0176] In the description of the disclosure, the description referring to the terms "one embodiment", "some embodiments", "an example" or "some examples" and the like means that the features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the disclosure. In the description of the disclosure, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the described features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0177] Although the embodiments of the disclosure have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the disclosure, and the scope of the disclosure is defined by the claims and their equivalents.

Claims

1. An engine (100) comprising: an oil return component provided with a plurality of oil return regions, at least part of the oil return regions being located at opposite ends of the oil return component; an oil return pump assembly (1) having oil return ports (113) respectively connected to at least part of the oil return regions at the opposite ends.

2. The engine (100) of claim 1, wherein, The oil return component comprises an oil pan (3) provided with at least part of the oil return regions at a first end (3a) and a second end (3b) along a first direction (L1), the oil return ports (113) being respectively connected to the oil return regions at the first end (3a) and the second end (3b).

3. The engine (100) of claim 2, wherein, The oil return pump assembly (1) comprises a first oil return pump (1111) having at least one first oil return port (11111) connected to the oil return regions at the first end (3a), and a second oil return pump (1112) having at least one second oil return port (11121) connected to the oil return regions at the second end (3b).

4. The engine (100) of claim 3, wherein, The oil return pump assembly (1) satisfies at least one of the following: The first end (3a) is provided with at least two of the oil return regions, the at least one first oil return port (11111) comprises at least two first oil return ports (11111) respectively connected to the at least two oil return regions at the first end (3a); or, The second end (3b) is provided with at least two of the oil return regions, the at least one second oil return port (11121) comprises at least two second oil return ports (11121) respectively connected to the at least two oil return regions at the second end (3b).

5. The engine (100) according to any one of claims 2-4, wherein, The first direction (L1) is a front-rear direction.

6. The engine (100) of claim 1, wherein, The oil return component comprises a main cylinder block (2) provided with at least part of the oil return regions at a third end (2a) and a fourth end (2b) along a second direction (L2), the oil return ports (113) being respectively connected to the oil return regions at the third end (2a) and the fourth end (2b).

7. The engine (100) of claim 6, wherein, The oil return pump assembly (1) comprises a third oil return pump (1121) having at least one third oil return port (11211) connected to the oil return regions at the third end (2a), and a fourth oil return pump (1122) having at least one fourth oil return port (11221) connected to the oil return regions at the fourth end (2b).

8. The engine (100) of claim 7, wherein, The oil return pump assembly (1) satisfies at least one of the following: The third end (2a) is provided with at least two oil return areas of the plurality of oil return areas, the at least one third oil return port (11211) includes at least two third oil return ports (11211), and the at least two third oil return ports (11211) are connected to the at least two oil return areas of the third end (2a) in one-to-one correspondence; or, The fourth end (2b) is provided with at least two oil return areas of the plurality of oil return areas, the at least one fourth oil return port (11221) includes at least two fourth oil return ports (11221), and the at least two fourth oil return ports (11221) are connected to the at least two oil return areas of the fourth end (2b) in one-to-one correspondence.

9. The engine (100) of claim 7, wherein, The at least one third oil return port (11211) includes at least two third oil return ports (11211), one of the at least two third oil return ports (11211) is connected to an oil return area of the third end (2a), and the other of the at least two third oil return ports (11211) is connected to an oil return area of the fourth end (2b).

10. The engine (100) of claim 9, wherein, The at least one fourth oil return port (11221) includes at least two fourth oil return ports (11221), one of the at least two fourth oil return ports (11221) is connected to an oil return area of the third end (2a), and the other of the at least two fourth oil return ports (11221) is connected to an oil return area of the fourth end (2b). The oil return area of the third end (2a) includes a first sub-area and a second sub-area oppositely arranged along a first direction (L1), the first sub-area is connected to the one third oil return port (11211), and the second sub-area is connected to the one fourth oil return port (11221). The oil return area of the fourth end (2b) includes a third sub-area and a fourth sub-area oppositely arranged along a first direction (L1), the third sub-area is connected to the other fourth oil return port (11221), and the fourth sub-area is connected to the other third oil return port (11211); wherein the first direction (L1) and the second direction (L2) are arranged vertically.

11. The engine (100) according to any one of claims 6-10, wherein, The second direction (L2) is a left-right direction.

12. The engine (100) of claim 6, wherein, The main cylinder body (2) includes a left cylinder body (21) and a right cylinder body (22), the left cylinder body (21) and the right cylinder body (22) are arranged along a left-right direction, and the left cylinder body (21) and the right cylinder body (22) define a crankshaft cavity (23) for mounting a crankshaft. The second direction (L2) is a left-right direction, the third end (2a) is arranged on the left cylinder body (21), and the fourth end (2b) is arranged on the right cylinder body (22).

13. The engine (100) of claim 12, wherein, The main cylinder body (2) satisfies at least one of the following: The left cylinder body (21) comprises a left cylinder body (211) and a left cylinder cover (212), the left cylinder cover (212) covers one side of the left cylinder body (211) away from the right cylinder body (22), and the third end (2a) is arranged on the left cylinder cover (212); or, The right cylinder body (22) comprises a right cylinder body (221) and a right cylinder cover (222), the right cylinder cover (222) covers one side of the right cylinder body (221) away from the left cylinder body (21), and the fourth end (2b) is arranged on the right cylinder cover (222).

14. The engine (100) of claim 1, wherein, The oil return component comprises a main cylinder body (2) and an oil pan (3), the oil pan (3) is arranged at the bottom of the main cylinder body (2), and at least two oil return regions in the plurality of oil return regions are arranged on at least one of the oil pan (3) and the main cylinder body (2); In the case that the at least two oil return regions are arranged on the oil pan (3), the at least two oil return regions on the oil pan (3) are located at opposite ends of the oil pan (3), and the oil return port (113) is connected with at least part of the oil return regions at the opposite ends of the oil pan (3) respectively; or In the case that the at least two oil return regions are arranged on the main cylinder body (2), the at least two oil return regions on the main cylinder body (2) are located at opposite ends of the main cylinder body (2), and the oil return port (113) is connected with at least part of the oil return regions at the opposite ends of the main cylinder body (2) respectively; or In the case that at least part of the oil return regions are arranged on the main cylinder body (2) and the oil pan (3), the oil return regions on the main cylinder body (2) and the oil return regions on the oil pan (3) are located at opposite ends, and the oil return port (113) is connected with the oil return regions on the main cylinder body (2) and the oil return regions on the oil pan (3) at the opposite ends respectively.

15. The engine (100) of claim 1, wherein, The oil return component comprises a main cylinder body (2) and an oil pan (3), the oil pan (3) is arranged at the bottom of the main cylinder body (2), and at least two oil return regions in the plurality of oil return regions are arranged on at least one of the oil pan (3) and the main cylinder body (2); The at least two oil return regions on the oil pan (3) are located at opposite ends of the oil pan (3); The at least two oil return regions on the main cylinder body (2) are located at opposite ends of the main cylinder body (2); The oil return pump assembly (1) comprises a first oil return pump (1111), a second oil return pump (1112) and a cylinder oil return pump (112), the first oil return pump (1111) is connected with one oil return region at one opposite end of the at least two oil return regions on the oil pan (3), the second oil return pump (1112) is connected with one oil return region at the other opposite end of the at least two oil return regions on the oil pan (3); and The cylinder oil return pump (112) is connected with the at least two oil return regions at opposite ends of the main cylinder body (2) respectively.

16. The engine (100) of claim 15, wherein, The oil sump (3) is divided into a first end (3a) and a second end (3b) at opposite ends thereof, and the first end (3a) and the second end (3b) are oppositely arranged along a front-rear direction; The first oil return pump (1111) and the second oil return pump (1112) are arranged in the front-rear direction, and the cylinder oil return pump (112) is between the first oil return pump (1111) and the second oil return pump (1112).

17. The engine (100) of claim 16, wherein, The main cylinder block (2) comprises a left cylinder block (21) and a right cylinder block (22), and the left cylinder block (21) and the right cylinder block (22) are arranged along a left-right direction, and the left cylinder block (21) and the right cylinder block (22) define a crankshaft cavity (23) for mounting a crankshaft; The left cylinder block (21) is provided with an oil return area, and the oil return area of the left cylinder block (21) comprises a first sub-area and a second sub-area oppositely arranged along the front-rear direction, and the right cylinder block (22) is provided with an oil return area, and the oil return area of the right cylinder block (22) comprises a third sub-area and a fourth sub-area oppositely arranged along the front-rear direction; The cylinder oil return pump (112) comprises a third oil return pump (1121) and a fourth oil return pump (1122), and the third oil return pump (1121) and the fourth oil return pump (1122) are sequentially arranged in the front-rear direction between the first oil return pump (1111) and the second oil return pump (1112), the third oil return pump (1121) comprises two third oil return ports (11211), the first sub-area is connected with one of the two third oil return ports (11211), and the fourth sub-area is connected with the other of the two third oil return ports (11211); The fourth oil return pump (1122) comprises two fourth oil return ports (11221), the second sub-area is connected with one of the two fourth oil return ports (11221), and the third sub-area is connected with the other of the two fourth oil return ports (11221).

18. The engine (100) of claim 17, wherein, The left cylinder block (21) comprises a left cylinder body (211) and a left cylinder cover (212), and the left cylinder cover (212) covers a side of the left cylinder body (211) away from the right cylinder block (22), and at least part of the oil return area is arranged on the left cylinder cover (212); The right cylinder block (22) comprises a right cylinder body (221) and a right cylinder cover (222), and the right cylinder cover (222) covers a side of the right cylinder body (221) away from the left cylinder block (21), and at least part of the oil return area is arranged on the right cylinder cover (222); In a projection plane perpendicular to an up-down direction, projection areas of the left cylinder body (211) and the right cylinder body (221) cover a projection area of the oil sump (3).

19. The engine (100) of claim 1, wherein, The oil return pump assembly (1) comprises at least one oil return pump (11), and the oil return pump (11) comprises: A housing (12) is provided with a receiving cavity (121), a first oil inlet channel (122), a second oil inlet channel (123) and an oil outlet channel (124) in communication with the receiving cavity (121), the first oil inlet channel (122) and the second oil inlet channel (123) are respectively located at opposite sides of the housing (12) and are both formed with the oil return port (113); and A first rotating member and a second rotating member, the first rotating member is arranged in the receiving cavity (121) for guiding oil from the first oil inlet channel (122) to the oil outlet channel (124) when rotating, the second rotating member is arranged in the receiving cavity (121) for guiding oil from the second oil inlet channel (123) to the oil outlet channel (124) when rotating.

20. The engine (100) of claim 19, wherein, The inlet end (124a) of the oil outlet channel (124) is located below the first rotating member and the second rotating member.

21. The engine (100) of claim 20, wherein, The first rotating member and the second rotating member are respectively formed as gears and are engaged, and the inlet end (124a) of the oil outlet channel (124) is located directly below the engagement position of the first rotating member and the second rotating member.

22. The engine (100) of claim 21, wherein, One of the first rotating member and the second rotating member is a driving gear (13), and the other one is a driven gear (14).

23. The engine (100) of claim 22, further comprising: A first rotating shaft (15) and a second rotating shaft (16), the first rotating shaft (15) is a driving shaft; The driving gear (13) and the driven gear (14) satisfy at least one of the following conditions: the driving gear (13) is sleeved on the first rotating shaft (15) and is in interference fit with the first rotating shaft (15), or the driven gear (14) is sleeved on the second rotating shaft (16) and is in key connection with the second rotating shaft (16).

24. The engine (100) of claim 19, wherein, The receiving cavity (121) includes a first sub-cavity (1211) and a second sub-cavity (1212) in communication, on the same cross section, the cross-sectional shape of the first sub-cavity (1211) and the cross-sectional shape of the second sub-cavity (1212) are both circular; the inlet end (124a) of the oil outlet channel (124) is located at the connection position of the first sub-cavity (1211) and the second sub-cavity (1212); the cross section is perpendicular to the rotation axis of the first rotating member.

25. The engine (100) of claim 24, wherein, The connection position of the first sub-cavity (1211) and the second sub-cavity (1212) is formed as a guide protrusion (125) extending towards the inlet end (124a) of the oil outlet channel (124).

26. The engine (100) of claim 19, wherein, The first oil inlet channel (122) and the second oil inlet channel (123) are equidistantly arranged relative to the oil outlet channel (124).

27. A hybrid assembly (1000) comprising: The engine (100) according to any one of claims 1-26.

28. A vehicle (2000) comprising: The engine (100) according to any one of claims 1-26; or, the hybrid assembly (1000) according to claim 27.

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