Engine and vehicle

Abstract

The invention relates to an engine and a vehicle, and the engine comprises an engine body provided with a lubricating oil way; an oil pan; wherein the volume in the shell space of the oil pan is A liters, and the unit flow of the lubricating oil way is B liters per minute; wherein the ratio of A to B is less than or equal to 1 / 9. The engine has the beneficial effects that the volume of the oil pan can be smaller on the premise that the lubricating requirement of the engine is met, so that the utilization rate of the volume of the oil pan is increased, and then the occupied space of the oil pan is reduced.

Description

Technical Field

[0001] The present application relates to the field of vehicle technology, and in particular to an engine and a vehicle. Background Art

[0002] Engine lubrication is a key technology for engine operation and performance. By transferring lubricating oil to relevant parts of the engine, the lubricating oil forms a thin film inside the engine, reducing friction and wear between relevant components of the engine.

[0003] In the related art, in order to collect the lubricating oil of the engine, the oil pan is often made to have a larger volume, which causes the oil pan to occupy a larger space. However, in the actual operation of the engine, the volume of the oil pan is not fully utilized. Summary of the Invention

[0004] The embodiments of the present application provide an engine and a vehicle to at least partially solve the above-mentioned technical problems.

[0005] In order to achieve the above objectives, according to a first aspect of the present application, the present application provides an engine, comprising:

[0006] The machine body has a lubricating oil circuit;

[0007] Oil pan;

[0008] The volume of the shell space of the oil pan is A liters, and the unit flow rate of the lubricating oil circuit is B liters per minute; wherein the ratio of A to B is less than or equal to one-ninth.

[0009] Optionally, in some embodiments of the present application, the ratio of A to B is less than or equal to 0.0711 and greater than or equal to 0.0455.

[0010] The present application provides an engine having a displacement of D liters. The engine includes an oil pan, and the volume of the shell space of the oil pan is A liters. The ratio of A to D is less than 2.

[0011] Optionally, in some embodiments of the present application, the ratio of A to D is less than or equal to 1.6 and greater than or equal to 1.

[0012] Optionally, in some embodiments of the present application, the number of cylinders of the engine is C;

[0013] The ratio of A to C ranges from 0.625 to 0.8.

[0014] Optionally, in some embodiments of the present application, the height of the oil pan is E mm;

[0015] The ratio of A to E ranges from 0.022 to 0.057.

[0016] Optionally, in some embodiments of the present application, the height of the oil pan ranges from 56 mm to 112 mm; and / or

[0017] The unit flow rate of the lubricating oil of the engine ranges from 45 liters per minute to 55 liters per minute; and / or

[0018] The number of cylinders of the engine ranges from 4 to 8, and the displacement of the engine ranges from 1.5 liters to 4 liters.

[0019] Optionally, in some embodiments of the present application, the engine is a horizontally opposed engine, and the number of cylinders of the engine is an even number.

[0020] Optionally, in some embodiments of the present application, the overall height of the engine ranges from 311 mm to 623 mm.

[0021] Optionally, in some embodiments of the present application, the engine includes:

[0022] The machine body has a lubricating oil circuit;

[0023] The oil return assembly is configured to pump the lubricating oil from the lubricating oil circuit to the oil storage device.

[0024] Optionally, in some embodiments of the present application, the oil return assembly is further configured to pump the lubricating oil from the housing space to an oil storage device.

[0025] Optionally, in some embodiments of the present application, the oil return assembly is connected to different positions of the lubricating oil circuit to pump the lubricating oil from different positions in the lubricating oil circuit to the oil storage device.

[0026] Optionally, in some embodiments of the present application, the body includes:

[0027] Cylinder body;

[0028] a first side cylinder cover, the cover being arranged on the left side of the cylinder body;

[0029] a second side cylinder cover, the cover being arranged on the right side of the cylinder body;

[0030] Wherein, the lubricating oil circuit includes a first side cylinder head oil circuit and a second side cylinder head oil circuit, the first side cylinder head oil circuit is arranged in the first side cylinder head, and the second side cylinder head oil circuit is arranged in the second side cylinder head;

[0031] The oil return assembly is provided with oil return oil passages respectively connected to the first side cylinder head oil passage and the second side cylinder head oil passage, so that the oil return assembly is connected to the lubricating oil passage.

[0032] Optionally, in some embodiments of the present application, the oil pan is disposed at the bottom of the cylinder body, and the oil return assembly is disposed in the shell space.

[0033] Optionally, in some embodiments of the present application, the oil return circuit includes:

[0034] A first type of oil circuit connected to the first side cylinder head oil circuit;

[0035] a second type of oil circuit connected to the second side cylinder head oil circuit;

[0036] The third type of oil circuit is connected to the housing space.

[0037] Optionally, in some embodiments of the present application, the first type of oil circuit is arranged on the left side of the oil return assembly, the second type of oil circuit is arranged on the right side of the oil return assembly, and the third type of oil circuit is arranged at the bottom of the oil return assembly.

[0038] Optionally, in some embodiments of the present application, the oil return assembly includes multiple oil return pumps, and the multiple oil return pumps are arranged in the front and rear directions of the oil return assembly.

[0039] Optionally, in some embodiments of the present application, there are multiple first-type oil circuits, and the multiple first-type oil circuits are arranged along the front-to-rear direction of the oil return assembly; and / or

[0040] There are multiple second-type oil passages, and the multiple second-type oil passages are arranged along the front-to-back direction of the oil return assembly.

[0041] Optionally, in some embodiments of the present application, the number of the third type of oil circuits is plural, and the third type of oil circuits are divided into multiple groups;

[0042] In each group of the third type oil passages, a plurality of the third type oil passages are sequentially arranged along the front-to-back direction;

[0043] The plurality of groups of the third type oil passages are arranged in sequence along the left-right direction.

[0044] Optionally, in some embodiments of the present application, the plurality of oil return pumps are divided into:

[0045] The first type oil return pump is provided with the first type oil circuit and the second type oil circuit;

[0046] The second type of oil return pump is provided with the third type of oil circuit.

[0047] Optionally, in some embodiments of the present application, the first type of oil return pump and the second type of oil return pump form a power coupling.

[0048] Optionally, in some embodiments of the present application, the first type of oil return pump is arranged between the second type of oil return pumps.

[0049] Optionally, in some embodiments of the present application, the engine further comprises:

[0050] The oil supply pump is connected to the oil storage device and is configured to pump the lubricating oil in the oil storage device to the lubricating oil circuit.

[0051] Optionally, in some embodiments of the present application, the oil return assembly includes a plurality of return oil pumps arranged in sequence along the front-to-back direction, the oil supply pump is arranged in front of the first return oil pump in the front-to-back direction, and the oil supply pump and the plurality of return oil pumps constitute a power coupling.

[0052] Optionally, in some embodiments of the present application, the oil return component has:

[0053] The oil outlet line is connected to the oil storage device.

[0054] According to a second aspect of the present application, a vehicle is also provided, comprising: the aforementioned engine.

[0055] Optionally, in some embodiments of the present application, the vehicle further includes:

[0056] The oil storage device is used to store lubricating oil flowing to the lubricating oil circuit of the engine.

[0057] The beneficial effect of the present application is that it provides an engine that can make the volume of the oil pan smaller while meeting the lubrication requirements of the engine, so as to improve the utilization rate of the oil pan volume and thereby reduce the space occupied by the oil pan.

[0058] Other features and advantages of the present application will be described in detail in the subsequent detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0059] To more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for describing the embodiments. Obviously, the drawings described below are only some embodiments of the present application. Those skilled in the art can also derive other drawings based on these drawings without inventive effort.

[0060] In order to more completely understand the present application and its beneficial effects, the following description will be given in conjunction with the accompanying drawings, wherein the same drawing numbers represent the same parts in the following description.

[0061] Figure 1 is a schematic diagram of a lubrication scheme of an engine provided in an exemplary embodiment of the present disclosure;

[0062] Figure 2 is a schematic structural diagram of an oil return assembly in an engine provided in an exemplary embodiment of the present disclosure;

[0063] Figure 3 is a schematic structural diagram from another perspective of an oil return assembly in an engine provided in an exemplary embodiment of the present disclosure;

[0064] Figure 4 is a schematic diagram of a principle of a multiple pump in an engine provided in an exemplary embodiment of the present disclosure;

[0065] Figure 5 FIG. 1 is a schematic structural diagram of a vehicle provided in an exemplary embodiment of the present disclosure.

[0066] Description of reference numerals:

[0067] 10. Vehicles;

[0068] 100. Engine;

[0069] 120, lubricating oil circuit; 121, first side cylinder head oil circuit; 122, second side cylinder head oil circuit;

[0070] 130, oil pan;

[0071] 151. Oil pump sprocket; 152. Crankshaft sprocket;

[0072] 110, oil return assembly; 111, first type oil circuit; 112, second type oil circuit; 113, third type oil circuit; 117, oil outlet circuit;

[0073] 110a, multiple pump; 114, first type oil return pump; 115, second type oil return pump; 116, oil supply pump; 200, oil storage device. DETAILED DESCRIPTION

[0074] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the embodiments described are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0075] refer to Figure 1 and Figure 2 As shown, according to a first aspect of the present application, an engine 100 is provided, comprising: an engine body and an oil pan 130 .

[0076] Specifically, the engine body has a lubricating oil circuit 120, which is used to meet the lubrication needs of the various friction pairs and other functional components of the engine 100. The oil pan 130 is a component fixed to the bottom of the engine 100 and is used to contain the engine's lubricating oil. The housing space of the oil pan 130 is generally located at the bottom of the engine 100 and is connected to the cylinder block and crankcase. The oil pan 130 is used to recover the lubricating oil from the lubricating oil circuit 120.

[0077] The volume of the housing space of the oil pan 130 (hereinafter referred to as the oil pan volume) is A liter (L), the unit flow rate of the lubricating oil circuit 120 is B liters per minute (L / min), and the displacement of the engine 100 is D liter (L).

[0078] It can be understood that the volume of the housing space of the oil pan 130 may be the maximum volume of lubricating oil that the housing space of the oil pan 130 can accommodate.

[0079] The unit flow rate of the lubricating oil passage 120 may be the maximum flow rate of the lubricating oil discharged from the entire lubricating oil passage 120 to the oil pan 130 within a unit time (eg, 1 minute).

[0080] According to existing experience, the oil pan volume can generally be determined in the following two ways:

[0081] 1. The number of times X that the lubricating oil circulates within the oil pan 130 per minute is generally less than 9 times. The product of the oil pan volume and the number of cycles must meet the unit flow rate of the engine lubricating oil circuit. That is, in the prior art, the product of A and X is generally equal to the unit flow rate B of the lubricating oil circuit 120. After the unit flow rate of the lubricating oil circuit 120 is calculated based on the engine performance requirements, the oil pan volume is calculated using the above formula. That is, the ratio of A to B must be greater than one-ninth.

[0082] 2. The oil pan volume A is 2.0 to 2.5 times the engine displacement D, that is, the ratio of A to D ranges from 2.0 to 2.5.

[0083] In an engine 100 provided in the present application, the oil pan volume A is smaller than the oil pan volume of the engine in the prior art. That is, in the engine 100 provided in the first aspect of the present application, the ratio of A to B is less than or equal to one-ninth, or the ratio of A to D is less than 2.

[0084] The engine 100 provided by the first aspect of the present application can make the oil pan volume smaller while meeting the lubrication requirements of the engine 100, so as to improve the utilization rate of the oil pan volume and thereby reduce the space occupied by the oil pan.

[0085] Specifically, to ensure that the oil pan 130 meets the lubrication needs of the engine 100 while maintaining a relatively small volume, several approaches are possible. The first approach is to bypass the circulation of a portion of the lubricating oil through the oil pan. Specifically, in one alternative embodiment, the engine 100 includes a first oil circulation circuit, a second oil circulation circuit, and a lubricating oil transfer component. The first oil circulation circuit sequentially passes through the lubricating oil circuit 120 and the oil pan 130, while the second oil circulation circuit sequentially passes through the lubricating oil circuit 120 and the lubricating oil transfer component. As a result, the unit flow rate of the lubricating oil circuit 120 can be met by both the first and second oil circulation circuits, reducing the required volume of the oil pan 130 and enabling a smaller volume than in conventional systems.

[0086] Among them, the first circulation oil circuit and the second circulation oil circuit can be merged and then supplied to the lubricating oil circuit 120 of the engine 100, or the lubricating oil circuit 120 of the engine 100 can be divided into two independent parts, respectively corresponding to lubricating different components of the engine 100, and the lubricating oil of the first circulation oil circuit is supplied to one part of the lubricating oil circuit 120, and the lubricating oil of the second circulation oil circuit is supplied to the other part of the lubricating oil circuit 120.

[0087] In one embodiment of the present application, the first circulation oil circuit and the second circulation oil circuit are combined and then supplied to the lubricating oil circuit 120 of the engine 100 , thereby simplifying the lubricating oil circuit 120 inside the engine 100 .

[0088] In one embodiment of the present application, the lubricating oil transfer component includes an oil return assembly 110, which is configured to extract lubricating oil from the lubricating oil circuit 120. In this embodiment, a portion of the lubricating oil is transferred through the oil return assembly 110 and no longer flows through the oil pan 130, thereby enabling the volume of the oil pan 130 to be designed to be smaller than in the prior art.

[0089] Specifically, to ensure that the oil pan 130 meets the lubrication needs of the engine 100 while maintaining a relatively small volume, various approaches are possible. A second approach involves providing an oil return assembly 110 and an oil storage device 200 to pump the lubricating oil stored in the oil pan 130 to the oil storage device 200. This allows the oil storage device 200 to store a portion of the lubricating oil that would otherwise be stored in the oil pan 130, thereby enabling the volume of the oil pan 130 to be designed to be smaller than in conventional systems. Specifically, in one alternative embodiment, the engine 100 includes an oil return assembly 110 configured to pump lubricating oil from the housing space of the oil pan 130 to the oil storage device 200.

[0090] The oil storage device 200 may be a part of the engine 100 or another external oil storage device.

[0091] In one embodiment of the present application, in order to ensure that the oil pan 130 meets the lubrication needs of the engine 100 under the premise of a smaller volume, the above-mentioned first method and second method can be adopted simultaneously, that is: an oil return component 110 and an oil storage device 200 are provided, and the oil return component includes a first type of oil return pump 114 and a second type of oil return pump 115. The first type of oil return pump 114 is configured to be able to extract the lubricating oil in the lubricating oil circuit 120, and the second type of oil return pump 115 is configured to be able to pump the lubricating oil from the shell space of the oil pan 130 to the oil storage device 200.

[0092] Through this embodiment, two methods are simultaneously utilized to achieve that the oil pan 130 meets the lubrication needs of the engine 100 with a smaller volume, and the volume of the oil pan 130 can be further made smaller to improve the utilization rate of the oil pan volume and further reduce the space occupied by the oil pan 130.

[0093] Furthermore, in one embodiment, under the premise of adopting the first and second approaches to reduce the oil sump volume requirement, the ratio of A to B is less than or equal to 0.0711, or in other words, the ratio of A to D is less than or equal to 1.6. Thus, adopting both the first and second approaches can significantly reduce the oil sump volume, thereby improving oil sump volume utilization and further reducing the space occupied by the oil sump.

[0094] However, the oil sump volume cannot be infinitely small. To meet the basic oil storage function, in some embodiments, the ratio of A to B must be greater than or equal to 0.0455, or the ratio of A to D must be greater than or equal to 1. In other words, the ratio of A to B must be less than or equal to 0.0711 and greater than or equal to 0.0455, and the ratio of A to D must be less than or equal to 1.6 and greater than or equal to 1.

[0095] It should be noted that the unit flow rate can be obtained by measuring the flow rate within the engine's lubricating oil circuit. For example, if the engine has only one oil supply channel, the unit flow rate can be obtained by measuring the total flow rate of this channel. If the engine has multiple oil supply channels, the unit flow rate can be obtained by measuring the total flow rate of these channels. The unit flow rate can also be calculated from the displacement and speed of the engine's fuel pump. For example, if the engine's fuel pump has a displacement of 24.5 ml / rpm and a speed of 2000 rpm, the unit flow rate is 49 liters / minute.

[0096] It should be noted that the engine displacement can be obtained through parameter identification such as the nameplate or nameplate on the engine. For example, regardless of whether the engine displacement is 2.0T or 2.0L, the engine displacement is uniformly 2 liters; or, regardless of whether the engine displacement is 1.5T or 1.5L, the engine displacement is uniformly 1.5 liters, and so on.

[0097] It should be noted that the shell space of the oil pan is not necessarily regular. Its volume can be determined by measuring how much other liquid of equal volume it can accommodate. For example, if 5 L of water is injected into the oil pan, the shell space of the oil pan is filled with water, and the volume of the shell space of the oil pan is 5 L.

[0098] It should be noted that the oil pan 130 referred to in the embodiment of the present application refers to a container installed at the bottom of the engine body for storing lubricating oil, and the oil pan 130 is fixedly connected to the engine body.

[0099] In this embodiment, during actual operation of the engine 100, its output power varies with usage demand, and the flow rate of lubricating oil discharged from the lubricating oil passage 120 to the oil pan 130 also varies accordingly. If the volume within the housing space of the oil pan 130 is too small, the lubricating oil collection limit of the oil pan 130 will be exceeded per unit flow rate of the lubricating oil passage 120. If the volume within the housing space of the oil pan 130 is too large, the oil pan 130 will still have a large excess volume per unit flow rate of the lubricating oil passage 120, resulting in wasted housing space.

[0100] The present application limits the ratio of the volume within the shell space of the oil pan 130 to the unit flow rate of the lubricating oil circuit 120, so that the volume within the shell space of the oil pan 130 is adapted to the unit flow rate of the lubricating oil circuit 120, thereby making full use of the volume of the oil pan 130 to meet the collection needs of the lubricating oil while avoiding the oil pan 130 being too large, which would cause the overall volume of the engine 100 to be too large.

[0101] As a preferred solution, the ratio of A to B may range from 0.0455 to 0.0711. Specifically, the volume of the housing space of the oil pan 130 ranges from 2.5 L to 3.2 L. The unit flow rate of the lubricating oil circuit 120 ranges from 45 L / min to 55 L / min.

[0102] Optionally, the value range of the volume in the housing space of the oil sump 130 and the value range of the unit flow rate are as follows: Table 1:

[0103] Table 1

[0104]

[0105] Among them, the unit flow in Table 1 is obtained through calculation.

[0106] In some embodiments of the present application, the number of cylinders of the engine 100 is C; wherein the ratio of A to C ranges from 0.625 to 0.8.

[0107] By adopting such a solution, the volume of the shell space is matched with the number of cylinders of the engine 100 by limiting the ratio of the volume of the shell space to the number of cylinders of the engine 100, thereby meeting the collection demand of the lubricating oil while avoiding waste caused by excessive volume of the shell space.

[0108] As a specific solution, the number of cylinders of the engine 100 may range from 4 to 8.

[0109] For example, when the number of cylinders of the engine 100 is 4, the volume within the shell space of the oil pan 130 can range from 2.5L to 3.2L; when the number of cylinders of the engine 100 is 8, the volume within the shell space of the oil pan 130 can range from 5.0L to 6.4L.

[0110] As a specific solution, the displacement of the engine 100 ranges from 1.5 liters to 4 liters.

[0111] As a preferred solution, the ratio of A to D ranges from 1 to 1.6.

[0112] Specifically, the displacement of the engine 100 is 2 liters, and the volume of the housing space of the oil pan 130 ranges from 2.5L to 3.2L.

[0113] In some embodiments of the present application, the height of the oil pan 130 is E mm, wherein the ratio of A to E ranges from 0.022 to 0.057. By limiting the ratio of the volume within the housing space to the height of the oil pan 130, the lubricating oil in the oil pan 130 has an appropriate contact area with the bottom of the engine 100, thereby promoting heat transfer and heat dissipation.

[0114] Optionally, the ratio of A to E may range from 0.022 to 0.029, 0.029 to 0.03125, 0.03125 to 0.04, 0.04 to 0.043, or 0.043 to 0.057.

[0115] As a specific solution, the height of the oil pan 130 ranges from 56 mm to 112 mm.

[0116] Optionally, the height of the oil pan 130 may range from 56 mm to 65 mm, 65 mm to 75 mm, 75 mm to 85 mm, 85 mm to 95 mm, 95 mm to 105 mm, or 105 mm to 112 mm.

[0117] As a preferred solution, the ratio of A to E ranges from 0.029 to 0.043.

[0118] Specifically, the height of the oil pan 130 ranges from 75 mm to 85 mm, and the volume of the housing space of the oil pan 130 ranges from 2.5 L to 3.2 L.

[0119] As a more preferred solution, the ratio of A to E ranges from 0.03125 to 0.04.

[0120] Specifically, the height of the oil pan 130 is 80 mm, and the volume of the housing space of the oil pan 130 may range from 2.5 L to 3.2 L.

[0121] By combining the above parameters of the height of the oil pan 130, the unit flow rate of the lubricating oil of the engine 100, the number of cylinders of the engine 100 and the displacement of the engine 100, the height of the oil pan 130 and the unit flow rate of the lubricating oil of the engine 100 are matched with the number of cylinders of the engine 100 and the displacement of the engine 100, thereby meeting the unit flow rate requirement of the lubricating oil while reducing the overall height of the engine 100.

[0122] In some embodiments of the present application, the engine 100 is a horizontally opposed engine, and the number of cylinders of the engine 100 is an even number.

[0123] In one example of the present application, engine 100 is a horizontally opposed engine 100 with four cylinders, an oil pan 130 height of 80 mm, a displacement of 2.0 T (corresponding to 2.0 liters), and a lubricating oil unit flow rate of engine 100 ranging from 45 liters per minute (L / min) to 55 liters per minute (L / min), fluctuating depending on operating conditions. With this parameter combination, the height of oil pan 130 and the lubricating oil unit flow rate of engine 100 can be effectively balanced.

[0124] In some embodiments of the present application, the overall height of the engine 100 ranges from 311 mm to 623 mm. At such an overall height of the engine 100, the horizontally opposed engine 100 can be stacked on the motor to form a powertrain, thereby improving the integration while ensuring that the powertrain has a suitable overall height.

[0125] In an example of the present application, the overall height of the engine 100 is 445 mm, wherein the height of the oil pan 130 is 80 mm.

[0126] The following describes one implementation of the first method in detail:

[0127] When the unit flow rate requirement is high and the volume of the oil pan 130 is small, the lubricating oil in the engine body cannot be returned due to structural limitations, resulting in accumulation within the engine body. If this accumulated lubricating oil cannot participate in circulation, the engine 100 will not be able to achieve the required unit flow rate. In some embodiments of the present application, the oil return assembly 110 is further configured to pump the lubricating oil from the lubricating oil passage 120 to the oil storage device 200.

[0128] By adopting such a solution, the lubricating oil in the lubricating oil circuit 120 is actively extracted through the oil return component 110, thereby realizing active oil return of the lubricating oil circuit 120, so that this part of the lubricating oil does not pass through the oil pan 130 but directly participates in the circulation of the lubricating oil circuit 120, thereby allowing as much lubricating oil as possible to participate in the oil circulation, in order to achieve a larger unit flow rate.

[0129] That is, in this embodiment, the oil return assembly 110 and the oil storage device 200 serve as lubricating oil transfer components, and the first circulating oil path passes through the oil return assembly 110 , the oil storage device 200 and the lubricating oil path 120 in sequence.

[0130] The engine 100 improves the oil return efficiency and oil pressure response time of the housing space of the lubricating oil circuit 120 and the oil pan 130. Since the oil return component 110 is configured to provide suction to extract lubricating oil from the housing space of the lubricating oil circuit 120 and the oil pan 130, the technical problem of poor oil return in the housing space of the lubricating oil circuit 120 and the oil pan 130 of the engine 100 is overcome.

[0131] In some embodiments of the present application, the oil return assembly 110 is connected to different locations of the lubricating oil circuit 120 to pump the lubricating oil from the different locations in the lubricating oil circuit 120 to the oil storage device 200 .

[0132] Specifically, the different positions of the lubricating oil circuit 120 at least include: cylinder head oil circuits on different sides or different lubrication positions in the cylinder head oil circuit on the same side.

[0133] By adopting such a solution, the oil return efficiency and the response time of the oil pressure in the lubricating oil circuit 120 are improved. Since the oil return component 110 is connected to different positions of the lubricating oil circuit 120, the lubricating oil can be pumped from different positions in the lubricating oil circuit 120 to the oil storage device 200, thereby overcoming the technical problem of poor oil return in some lubricating oil circuits 120 of the engine 100. At the same time, it effectively avoids the problems of flooding in the cylinder, low oil pressure, and seizure caused by insufficient oil when the lubricating oil circuit 120 returns oil.

[0134] Engine 100 can have different cylinder head designs, such as single-cylinder heads, dual-cylinder heads, and V-type cylinder heads. In some embodiments of the present application, engine 100 is a horizontally opposed engine 100, comprising a cylinder block, a first cylinder head, and a second cylinder head. The first cylinder head is located on the left side of the cylinder block, while the second cylinder head is located on the right side. The cylinder head is connected to the piston and valve train, sealing and protecting the interior of engine 100.

[0135] It should be noted that the left-right direction in this application is only used to facilitate the description of the specific embodiments of this application and is only used to express relative positional relationships, generally referring to front and rear in actual use or working conditions. Similarly, the up-down direction and the front-back direction are also only used to express relative positional relationships. They only indicate approximate directions, not absolute geometric relationships.

[0136] In order to improve the oil return efficiency and oil pressure response time of the lubricating oil circuit 120, refer to Figure 1 As shown, lubricating oil passage 120 includes a first cylinder head oil passage 121 and a second cylinder head oil passage 122. First cylinder head oil passage 121 is located within the first cylinder head, while second cylinder head oil passage 122 is located within the second cylinder head. Lubricating oil in the cylinder head oil passages is directed to at least the areas in contact with the pistons and valves to reduce friction, wear, and temperature.

[0137] The oil return assembly 110 is provided with oil return passages connected to the first side cylinder head oil passage 121 and the second side cylinder head oil passage 122 respectively, so as to connect the oil return assembly 110 with the lubricating oil passage 120 , thereby improving the oil return efficiency of the oil return assembly 110 for the lubricating oil passage 120 .

[0138] The following describes one implementation of the second method in detail:

[0139] When the specific flow rate demand is high and the volume of the housing space of the oil pan 130 is small, the lubricating oil may overflow from the oil pan 130 as it returns to the oil pan 130 due to its own gravity. In some embodiments of the present application, the engine 100 further includes an oil return assembly 110. The oil return assembly 110 is configured to pump the lubricating oil from the housing space to the oil storage device 200.

[0140] By adopting such a solution, the lubricating oil in the shell space is actively extracted through the oil return component 110 to realize active oil return to the oil pan 130, thereby preventing the lubricating oil from overflowing from the oil pan 130 and allowing as much lubricating oil as possible to participate in the oil circulation, so as to achieve a larger unit flow rate.

[0141] In some embodiments of the present application, the oil pan 130 is located at the bottom of the cylinder body, and the oil return assembly 110 is located within the housing space. This allows the center of gravity of the oil return assembly 110 to be lower than the lubricating oil passage 120. The lubricating oil is transported to the oil return assembly 110 under the combined effects of its own gravity and the suction force of the oil return assembly 110, thereby improving oil return efficiency.

[0142] Hereinafter, an implementation method of adopting both the first and second methods will be described in detail:

[0143] In some embodiments of the present application, reference is made to Figure 2 Figure 3 As shown, the oil return circuit includes: a first type oil circuit 111, a second type oil circuit 112 and a third type oil circuit 113. The oil return assembly 110 includes a first type oil return pump 114 and a second type oil return pump 115.

[0144] The first oil passage 111 is connected to the first side cylinder head oil passage 121, allowing the lubricating oil in the first side cylinder head oil passage 121 to flow to the oil storage device 200 under the suction force provided by the oil return assembly 110. The second oil passage 112 is connected to the second side cylinder head oil passage 122, allowing the lubricating oil in the second side cylinder head oil passage 122 to flow to the oil storage device 200 under the suction force provided by the oil return assembly 110. The third oil passage 113 is connected to the housing space, allowing the lubricating oil in the housing space of the oil pan 130 to flow to the oil storage device 200 under the suction force provided by the oil return assembly 110.

[0145] The first oil return pump 114 is provided with a first oil passage 111 and a second oil passage 112; the second oil return pump 115 is provided with a third oil passage 113. By providing multiple oil return pumps, each connected to the lubricating oil passage 120 and the housing space, the first oil passage 111, the second oil passage 112, and the third oil passage 113 can operate independently, thereby improving oil return efficiency.

[0146] By further refining the return oil circuit, corresponding to the connection between the cylinder head oil circuit on different sides and the shell space of the oil pan 130, the spatial layout of the engine 100 is simplified, and the pipeline connection between the lubricating oil circuit 120 and the shell space and the return oil component 110 is facilitated, which can effectively reduce the length of the connecting pipeline and improve the oil return rate of the engine 100.

[0147] In some embodiments of the present application, reference is made to Figure 2 As shown, the first type of oil passage 111 is provided on the left side of the oil return assembly 110 , and the second type of oil passage 112 is provided on the right side of the oil return assembly 110 .

[0148] The above technical solution simplifies the spatial layout of the engine 100 by setting the first type of oil circuit 111 and the second type of oil circuit 112, facilitates the connection between the oil return assembly 110 and the oil circuits of different side cylinder heads, reduces the length of the connecting pipeline, and thus improves the oil return efficiency.

[0149] refer to Figure 2 and Figure 3 As shown, the third type of oil circuit 113 is arranged at the bottom of the oil return assembly 110, so that no pipeline connection is required. The oil return assembly 110 directly absorbs oil from the shell space of the oil pan 130, saving costs, reducing pressure loss, and improving pressure response time.

[0150] In some embodiments of the present application, reference is made to Figure 2 and Figure 4 As shown, the oil return assembly 110 includes multiple oil return pumps, which are arranged in the front and rear directions of the oil return assembly 110. The arrangement of multiple oil return pumps increases the suction force at the housing space of the lubricating oil circuit 120 and the oil pan 130, thereby improving the oil return efficiency.

[0151] In some embodiments of the present application, reference is made to Figure 2 As shown, there are multiple first oil passages 111 , which are arranged along the front-to-rear direction of the oil return assembly 110 . The multiple first oil passages 111 can be connected to different positions of the first side cylinder head oil passage 121 .

[0152] There are multiple second oil passages 112 , which are arranged along the front-to-rear direction of the oil return assembly 110 . The multiple second oil passages 112 can be connected to different positions of the first cylinder head oil passage 121 .

[0153] Exemplarily, two first-type oil passages 111 are provided in the front-to-back direction, and two second-type oil passages 112 are provided in the front-to-back direction.

[0154] By adopting such a solution, the oil return efficiency of the engine 100 is further improved by setting up multiple first-type oil circuits 111 and multiple second-type oil circuits 112, ensuring smooth oil return in the cylinder head area of the engine 100, avoiding the occurrence of oil return dead zones, and reducing the risks of dry grinding, cavitation and abnormal noise generated by the oil return component 110 during the oil return process of the engine 100.

[0155] In some embodiments of the present application, reference is made to Figure 3 As shown, there are multiple third-type oil passages 113 , and the third-type oil passages 113 are divided into multiple groups; in each group of third-type oil passages 113 , multiple third-type oil passages 113 are arranged in sequence along the front-to-back direction; multiple groups of third-type oil passages 113 are arranged in sequence along the left-to-right direction.

[0156] Exemplarily, two groups of the third type oil passages 113 are provided in the left-right direction, and each group has two oil passages in the front-rear direction.

[0157] By adopting such a solution, through the setting of multiple third-type oil circuits 113, oil can be sucked from different positions of the shell space, ensuring smooth oil return in the shell space of the oil pan 130, avoiding the occurrence of oil return dead zones, and reducing the risks of dry grinding, air suction and abnormal noise generated by the oil return component 110 during the oil return process of the engine 100.

[0158] refer to Figure 4 As shown, in some embodiments of the present application, the first type of oil scavenge pump 114 and the second type of oil scavenge pump 115 are power-coupled. Specifically, the first type of oil scavenge pump 114 and the second type of oil scavenge pump 115 are driven by the same oil pump sprocket 151 to achieve power coupling. The oil pump sprocket 151 is connected to the crankshaft sprocket 152 of the engine 100 via a chain, thereby simplifying the driving method of multiple oil scavenge pumps.

[0159] refer to Figure 2 and Figure 4 As shown, in some embodiments of the present application, the first-type oil scavenge pump 114 is disposed between two second-type oil scavenge pumps 115. By adjusting the positional relationship between the first-type oil scavenge pump 114 and the second-type oil scavenge pump 115, appropriate spacing is ensured between the plurality of third-type oil passages 113 in both the front-to-back and left-to-right directions. This ensures sufficient return of lubricating oil from various locations within the bottom shell space of the oil pan 130. This ensures that the second-type oil scavenge pump 115 does not completely drain the third-type oil passages 113 at various tilt angles of the engine 100, thereby avoiding problems such as poor oil return from the second-type oil scavenge pump 115 and abnormal noise from dry grinding.

[0160] refer to Figure 1As shown, in some embodiments of the present application, the engine 100 further includes: a fuel supply pump 116 . The oil supply pump 116 is connected to the oil storage device 200 and is configured to extract the lubricating oil in the oil storage device 200 so that the lubricating oil is pumped to the lubricating oil circuit 120. For example, the lubricating oil going to the main bearing, tensioner, piston cooling nozzle (PCJ, Piston Cooling Jet), supercharger, etc. of the engine 100 is finally collected in the shell space of the oil pan 130 through gaps or pipes, and enters the return oil pump through the third oil circuit 113; the lubricating oil going to the cylinder head camshaft, variable valve timing system (VVT, Variable Valve Timing), high-pressure oil pump and hydraulic tappet is finally collected in the first side cylinder head oil circuit 121 and the second side cylinder head oil circuit 122, and enters the return oil pump through the first oil circuit 111 and the second oil circuit 112; the return oil pump forcibly draws back the lubricating oil in the lubricating oil circuit 120 and the shell space of the oil pan 130 through the above-mentioned connection method, thereby realizing the normal operation of the engine 100 and the reciprocating circulation of the lubricating oil.

[0161] refer to Figure 4 As shown, in some embodiments of the present application, the oil return assembly 110 includes a plurality of oil return pumps arranged in sequence along the front-to-back direction, the oil supply pump 116 is arranged in front of the first oil return pump in the front-to-back direction, and the oil supply pump 116 and the plurality of oil return pumps constitute a power coupling.

[0162] It will be appreciated that at least two of the first type of oil scavenge pump 114, the second type of oil scavenge pump 115, and the oil supply pump 116 are power-coupled. Specifically, the first type of oil scavenge pump 114, the second type of oil scavenge pump 115, and the oil supply pump 116 are driven by the same oil pump sprocket 151 to achieve power coupling. The oil pump sprocket 151 is connected to the crankshaft sprocket 152 of the engine 100 via a chain.

[0163] Through the connection method and relative position relationship between the above-mentioned first-class return oil pump 114, the second-class return oil pump 115 and the oil supply pump 116, the multi-pump 110a formed by the first-class return oil pump 114, the second-class return oil pump 115 and the oil supply pump 116 is in a relatively low height size, which fully utilizes the lateral space in the engine 100, facilitates the arrangement of the first-class oil circuit 111, the second-class oil circuit 112 and the third-class oil circuit 113, and realizes sufficient oil return to the shell space of the lubricating oil circuit 120 and the oil pan 130. At the same time, it can reduce the shell space of the oil pan 130 and the center of gravity of the multi-pump 110a in the engine 100, thereby realizing the reciprocating circulation of the lubricating oil.

[0164] In some embodiments, reference Figure 2 As shown, the oil return assembly 110 has an oil outlet passage 117 . The oil outlet passage 117 is connected to the oil storage device 200 and is used to deliver lubricating oil to the oil storage device 200 .

[0165] According to the second aspect of this application, referring to Figure 5 As shown, a vehicle 10 is provided, comprising the engine 100 disclosed in the first aspect of the present application.

[0166] In some embodiments, the vehicle 10 further includes an oil storage device 200 . The oil storage device 200 is used to store the lubricating oil flowing to the lubricating oil circuit 120 .

[0167] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0168] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described in detail in a certain embodiment, reference can be made to the relevant descriptions of other embodiments.

[0169] The embodiments, implementation methods and related technical features of the present application can be combined and replaced with each other without conflict.

[0170] The above are merely preferred embodiments of the present application and do not constitute any form of limitation to the present application. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present application without departing from the content of the technical solution of the present application are still within the scope of the technical solution of the present application.

Claims

1. An engine, characterized in that: include: The machine body has a lubricating oil circuit; Oil pan; The volume of the shell space of the oil pan is A liters, and the unit flow rate of the lubricating oil circuit is B liters per minute; wherein the ratio of A to B is less than or equal to one-ninth.

2. The engine according to claim 1, characterized in that The ratio of A to B is less than or equal to 0.0711 and greater than or equal to 0.0455.

3. An engine, characterized in that: The displacement of the engine is D liters. The engine includes an oil pan. The volume of the housing space of the oil pan is A liters. The ratio of A to D is less than 2.

4. An engine according to claim 3, characterized in that: The ratio of A to D is less than or equal to 1.6 and greater than or equal to 1.

5. The engine according to any one of claims 1 to 4, characterized in that The number of cylinders of the engine is C; The ratio of A to C ranges from 0.625 to 0.

8.

6. The engine according to any one of claims 1 to 4, characterized in that The height of the oil pan is E mm; The ratio of A to E ranges from 0.022 to 0.

057.

7. The engine according to any one of claims 1 to 4, characterized in that The height of the oil sump ranges from 56 mm to 112 mm; and / or The unit flow rate of the lubricating oil of the engine ranges from 45 liters per minute to 55 liters per minute; and / or The number of cylinders of the engine ranges from 4 to 8, and the displacement of the engine ranges from 1.5 liters to 4 liters.

8. The engine according to any one of claims 1 to 4, characterized in that The engine is a horizontally opposed engine, and the number of cylinders of the engine is an even number.

9. The engine according to claim 8, characterized in that The overall height of the engine ranges from 311 mm to 623 mm.

10. The engine according to any one of claims 1 to 4, characterized in that The engine comprises: The machine body has a lubricating oil circuit; The oil return assembly is configured to pump the lubricating oil from the lubricating oil circuit to the oil storage device.

11. The engine according to claim 10, characterized in that The oil return assembly is further configured to pump lubricating oil from the housing space to an oil storage device.

12. The engine according to claim 11, characterized in that The oil return assembly is connected to different positions of the lubricating oil circuit to pump the lubricating oil from the different positions in the lubricating oil circuit to an oil storage device.

13. The engine according to claim 12, characterized in that The body comprises: Cylinder body; a first side cylinder cover, the cover being arranged on the left side of the cylinder body; a second side cylinder cover, the cover being arranged on the right side of the cylinder body; Wherein, the lubricating oil circuit includes a first side cylinder head oil circuit and a second side cylinder head oil circuit, the first side cylinder head oil circuit is arranged in the first side cylinder head, and the second side cylinder head oil circuit is arranged in the second side cylinder head; The oil return assembly is provided with oil return oil passages respectively connected to the first side cylinder head oil passage and the second side cylinder head oil passage, so that the oil return assembly is connected to the lubricating oil passage.

14. The engine according to claim 13, characterized in that The oil pan is arranged at the bottom of the cylinder body, and the oil return assembly is arranged in the housing space.

15. The engine according to claim 13, characterized in that The oil return circuit includes: A first type of oil circuit connected to the first side cylinder head oil circuit; a second type of oil circuit connected to the second side cylinder head oil circuit; The third type of oil circuit is connected to the housing space.

16. The engine according to claim 15, characterized in that The first type of oil circuit is arranged on the left side of the oil return assembly, the second type of oil circuit is arranged on the right side of the oil return assembly, and the third type of oil circuit is arranged at the bottom of the oil return assembly.

17. The engine according to claim 15, characterized in that The oil return assembly includes a plurality of oil return pumps, which are arranged in the front and rear directions of the oil return assembly.

18. The engine according to claim 17, characterized in that There are multiple first-type oil passages, and the multiple first-type oil passages are arranged along the front-to-rear direction of the oil return assembly; and / or There are multiple second-type oil passages, and the multiple second-type oil passages are arranged along the front-to-back direction of the oil return assembly.

19. The engine according to claim 17, characterized in that There are multiple third-type oil circuits, and the third-type oil circuits are divided into multiple groups; In each group of the third type oil passages, a plurality of the third type oil passages are sequentially arranged along the front-to-back direction; The plurality of groups of the third type oil passages are arranged in sequence along the left-right direction.

20. The engine according to claim 17, characterized in that The plurality of oil return pumps are divided into: The first type oil return pump is provided with the first type oil circuit and the second type oil circuit; The second type of oil return pump is provided with the third type of oil circuit.

21. The engine according to claim 20, characterized in that The first type of oil return pump and the second type of oil return pump form a dynamic coupling.

22. The engine according to claim 20, characterized in that The first type of oil return pump is arranged between the second type of oil return pumps.

23. The engine according to claim 11, characterized in that The engine further comprises: The oil supply pump is connected to the oil storage device and is configured to pump the lubricating oil in the oil storage device to the lubricating oil circuit.

24. The engine according to claim 23, characterized in that The oil return assembly includes a plurality of oil return pumps sequentially arranged in the front-to-back direction, the oil supply pump is arranged in front of the first oil return pump in the front-to-back direction, and the oil supply pump and the plurality of oil return pumps form a power coupling.

25. The engine according to claim 24, characterized in that The oil return component has: The oil outlet line is connected to the oil storage device.

26. A vehicle, characterized in that: include: An engine as claimed in any one of claims 1 to 25.

27. The vehicle according to claim 26, characterized in that The vehicle further comprises: The oil storage device is used to store lubricating oil flowing to the lubricating oil circuit of the engine.

Images