Oil sump, engine, hybrid assembly, and vehicle

Abstract

An oil sump, an engine, a hybrid assembly, and a vehicle. The oil sump is provided with a coolant channel; the oil sump is provided with a liquid outlet in communication with the coolant channel; and the liquid outlet is configured to be in communication with an engine body.

Description

Oil sump, engine, hybrid assembly and vehicle

[0001] The present application claims priority to Chinese Patent Application No. 202411346948.2, 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 engines, and in particular to an oil sump, an engine, a hybrid assembly and a vehicle. BACKGROUND

[0003] At present, "high performance, low fuel consumption, lightweight, and compactness" are new requirements for the field of automobile engines in the world today, and are also the development trend of future engines. "High performance" means that the performance parameters of the engine, such as power, torque, and specific power, need to be continuously improved. "Lightweight" means that the use of materials such as aluminum alloy and magnesium alloy for the cylinder block is becoming increasingly popular. "Compactness" means that the engine structure needs to develop towards integration, modularization, and reduction of cylinder center distance. SUMMARY

[0004] The present disclosure provides an oil sump, an engine, a hybrid assembly and a vehicle, which are used to solve the problem that the communication mode of the multi-cylinder engine and the cooling liquid pipeline in the related art is not conducive to the compactness and miniaturization of the engine.

[0005] In a first aspect, an oil sump is provided. The oil sump is provided with a cooling liquid passage. The oil sump is provided with a liquid outlet in communication with the cooling liquid passage, and the liquid outlet is configured to be in communication with the engine body.

[0006] Some embodiments of the present disclosure provide an oil sump, an engine, a hybrid assembly and a vehicle, which are used to solve the problem that the communication mode of the multi-cylinder engine and the cooling liquid pipeline in the related art is not conducive to the compactness and miniaturization of the engine.

[0007] In addition, as the lubricating oil is delivered by the oil pump to each component requiring lubrication in the engine, and then flows back to the oil sump. In this process, the oil absorbs the heat of the engine components. Some embodiments of the present disclosure provide a cooling liquid passage on the oil sump, so that the cooling liquid in the cooling liquid passage can exchange heat with the lubricating oil on the oil sump when the cooling liquid flows in the cooling liquid passage, thereby cooling the lubricating oil in the oil sump.

[0008] In some embodiments, the outlet includes a first outlet and a second outlet in communication with the cooling liquid passage. The first outlet and the second outlet are configured to be in communication with the engine block. In this way, the cooling liquid in the cooling liquid passage can flow into different cylinder blocks of the engine block through the first outlet and the second outlet, respectively. In this way, the cooling liquid supply line in communication with the engine only needs to be in communication with the cooling liquid passage to achieve communication with multiple cylinder blocks. Compared with the related art, in which multiple branch lines are provided and are in communication with the cooling devices in multiple cylinder blocks, respectively, some embodiments of the present disclosure can reduce the number of lines connected to the engine, thereby reducing the space occupied by the lines in the vehicle body, which is conducive to the compactness and miniaturization of the engine.

[0009] In some embodiments, the oil sump further includes an inlet in communication with the cooling liquid passage. In this way, the cooling liquid supply line only needs to be in communication with the inlet on the oil sump to achieve communication with multiple cylinder blocks. The cooling liquid supply line only needs to be assembled with the oil sump once, which reduces the time required for assembly of the cooling liquid supply line with the oil sump and reduces production costs.

[0010] In some embodiments, the outlet includes a third outlet in communication with the cooling liquid passage. The third outlet is configured to be in communication with the supercharger. In this way, the cooling liquid in the cooling liquid passage can also flow into the supercharger through the third outlet to exchange heat with the supercharger to cool the supercharger. In this way, an additional passage for providing cooling liquid to the supercharger is not required, which reduces the production difficulty of the engine and improves the production efficiency of the engine.

[0011] In some embodiments, the oil sump further includes an inlet in communication with the cooling liquid passage. The cooling liquid passage includes a first passage and a second passage. The first passage is in communication between the second passage and the inlet, the first outlet is in communication with the first passage, and the second outlet is in communication with the second passage. In this way, by connecting the first passage and the second passage, it can be ensured that the cooling liquid passage is in communication with the inlet, the first outlet, and the second outlet.

[0012] In some embodiments, the first channel and the second channel have different extension directions. In this way, by connecting the two channels with different extension directions, the flow direction of the cooling liquid is changed, and it is ensured that the inlet and the outlet can be connected by the first channel and the second channel with different extension directions when the inlet and the outlet are arranged at the target positions.

[0013] In some embodiments, the oil pan further comprises a cooling liquid pipeline formed with the cooling liquid channel. In this way, the cooling liquid pipeline only needs to be added to the oil pan, without the need to improve the structure of the oil pan, so that the oil pan does not need to be re-molded, thereby reducing the production cost.

[0014] In some embodiments, the oil pan further comprises an inlet communicating with the cooling liquid channel.

[0015] The oil pan comprises a top surface provided with an oil storage groove, a bottom surface opposite to the top surface, and a side surface surrounding the oil storage groove. The inlet is arranged on the side surface, and the outlet is arranged on the top surface. Since the engine is usually arranged above the oil pan, by arranging the outlet on the top surface of the oil pan, the engine can be conveniently connected to the outlet, and the length of the cooling liquid channel on the oil pan can be reduced, thereby reducing the production cost. By arranging the inlet on the side surface, when the motor is arranged on the side of the oil pan away from the engine, the connection between the oil pan and other cooling components (such as a pump body) is not limited.

[0016] In some embodiments, the oil pan further comprises an inlet communicating with the cooling liquid channel. The oil pan comprises a top surface provided with an oil storage groove, a bottom surface opposite to the top surface, and a side surface surrounding the oil storage groove. The inlet is arranged on the top surface or the bottom surface, and the outlet is arranged on the side surface or the bottom surface.

[0017] In some embodiments, the inner diameter of the first channel decreases in the direction from the inlet to the second channel. In this way, the outer diameter of the casting gradually decreases in the direction from the inlet to the second channel, so that the casting is convenient to take out from the inlet. In addition, when the cooling liquid flows in the direction from the inlet to the second channel, the flow rate of the cooling liquid in the first channel can be increased due to the decrease of the inner diameter of the first channel.

[0018] In some embodiments, the center axis of the inlet is collinear with the center axis of the first channel. In this way, the inlet is the casting outlet of the casting, so that the casting outlet does not need to be blocked and can be directly used as a port communicating with the cooling pipeline, thereby reducing the process of additionally opening the inlet.

[0019] In some embodiments, the oil pan further comprises a process hole communicating with the second channel. The center axis of the process hole is collinear with the center axis of the second channel, and the end of the process hole opposite to the second channel penetrates the oil pan.

[0020] In some embodiments, the process hole is spaced apart from the second liquid outlet along an extension direction of the second channel.

[0021] In some embodiments, the inner diameter of the second channel decreases along a direction from the process hole to the second liquid outlet. In this way, the outer diameter of the casting gradually decreases along a direction from the process hole to the second liquid outlet, so that the casting is more convenient to take out from the process hole. In addition, when the cooling liquid flows along the second channel, the flow rate of the cooling liquid in the second channel can be increased due to the decrease of the inner diameter of the second channel.

[0022] In some embodiments, the oil sump further comprises a cover body arranged at the process hole and configured to block the process hole. In this way, leakage of the cooling liquid from the process hole can be avoided.

[0023] In some embodiments, an oil storage groove is formed on the oil sump, and at least part of the cooling liquid channel is arranged below the oil storage groove. In this way, the cooling liquid channel is arranged below the oil storage groove, so that the cooling liquid channel can be avoided to be located above the oil discharge groove to affect demolding of the oil storage groove, and the production and processing of the oil sump are facilitated.

[0024] In some embodiments, the oil sump further comprises a cover body arranged at the process hole and configured to block the process hole. In this way, leakage of the cooling liquid from the process hole can be avoided.

[0025] In some embodiments, the engine body comprises a first cylinder body and a second cylinder body. The cooling channel comprises a first cooling channel arranged at least partially in the first cylinder body and a second cooling channel arranged at least partially in the second cylinder body. The liquid outlet comprises a first liquid outlet and a second liquid outlet in communication with the cooling liquid channel, the first liquid outlet being in communication with the first cooling channel, and the second liquid outlet being in communication with the second cooling channel. In this way, the cooling liquid in the cooling liquid channel can flow into the first cooling channel through the first liquid outlet and flow into the second cooling channel through the second liquid outlet, respectively. In this way, the cooling liquid supply pipeline connected with the engine only needs to be in communication with the cooling liquid channel, so as to realize communication with the first cooling channel and the second cooling channel. Compared with the related art in which multiple branch pipelines are arranged and respectively communicate with the cooling devices in multiple cylinder bodies, some embodiments of the present disclosure can reduce the number of pipelines connected with the engine, so as to reduce the vehicle body space occupied by the pipelines, and facilitate the compactness and miniaturization of the engine.

[0026] In some embodiments, the engine body comprises a first cylinder body and a second cylinder body, and the cooling channel comprises a first cooling channel arranged at least partially in the first cylinder body and a second cooling channel arranged at least partially in the second cylinder body. The first cooling channel is in communication with the second cooling channel. The liquid outlet comprises a first liquid outlet in communication with the cooling liquid channel, and the first liquid outlet is in communication with the first cooling channel. In some embodiments, the engine body comprises a first cylinder body and a second cylinder body, and the cooling channel comprises a first cooling channel arranged at least partially in the first cylinder body and a second cooling channel arranged at least partially in the second cylinder body. The first cooling channel is in communication with the second cooling channel. The liquid outlet comprises a first liquid outlet in communication with the cooling liquid channel, and the first liquid outlet is in communication with the first cooling channel.

[0027] In some embodiments, the engine further comprises a supercharger. The supercharger is provided with a cooling heat exchange pipeline. The oil sump is further provided with a third liquid outlet in communication with the cooling liquid channel, and the third liquid outlet is in communication with the cooling heat exchange pipeline. In this way, the cooling liquid in the cooling liquid channel can also flow into the cooling heat exchange pipeline through the third liquid outlet to exchange heat with the supercharger, so as to cool the supercharger. In this way, the channel for providing cooling liquid for the supercharger does not need to be additionally provided, the production and manufacturing difficulty of the engine is reduced, and the production efficiency of the engine is improved.

[0028] In some embodiments, the engine further comprises a water jacket. The water jacket constitutes at least part of the cooling channel. At least part of the water jacket is arranged in the engine block, and the inlet is in communication with the liquid outlet and the water jacket.

[0029] In some embodiments, the engine block comprises a first cylinder body and a second cylinder body. The cooling channel comprises a first cooling channel arranged at least partially in the first cylinder body and a second cooling channel arranged at least partially in the second cylinder body. The liquid outlet comprises a first liquid outlet and a second liquid outlet both in communication with the cooling liquid channel. The first liquid outlet is in communication with the first cooling channel, and the second liquid outlet is in communication with the second cooling channel. The inlet comprises a first inlet arranged on the first cylinder body and a second inlet arranged on the second cylinder body. The water jacket comprises a first water jacket arranged at least partially in the first cylinder body and a second water jacket arranged at least partially in the second cylinder body. The first water jacket constitutes at least part of the first cooling channel, and the second water jacket constitutes at least part of the second cooling channel. The first inlet is in communication with the first liquid outlet and the first water jacket, and the second inlet is in communication with the second liquid outlet and the second water jacket.

[0030] In some embodiments, the engine block comprises a first cylinder body and a second cylinder body. The cooling channel comprises a first cooling channel arranged at least partially in the first cylinder body and a second cooling channel arranged at least partially in the second cylinder body. The liquid outlet comprises a first liquid outlet in communication with the cooling liquid channel. The first liquid outlet is in communication with the first cooling channel. The inlet comprises a first inlet arranged on the first cylinder body and a second inlet arranged on the second cylinder body. The water jacket comprises a first water jacket arranged at least partially in the first cylinder body and a second water jacket arranged at least partially in the second cylinder body. The first water jacket constitutes at least part of the first cooling channel, and the second water jacket constitutes at least part of the second cooling channel. The first inlet is in communication with the first liquid outlet and the first water jacket. The first cylinder body is further provided with a first outlet in communication with the first water jacket, and the second inlet is in communication with the first outlet and the second water jacket.

[0031] In some embodiments, the arrangement direction of the first cylinder body and the second cylinder body is a first direction, and the arrangement direction of the engine block and the oil sump is a second direction. The first direction and the second direction are perpendicular.

[0032] In a third aspect, a hybrid assembly is provided. The hybrid assembly comprises the engine of the second aspect.

[0033] In some embodiments, the hybrid assembly further comprises an electric machine. The engine block comprises a first cylinder block and a second cylinder block. The oil pan is disposed between the electric machine and the first cylinder block and the second cylinder block.

[0034] In a fourth aspect, a vehicle is provided. The vehicle comprises the oil pan of the first aspect, or the engine of the second aspect, or the hybrid assembly of the third aspect.

[0035] It should be noted that the technical effects brought by the implementation manners of the third aspect and the fourth aspect can refer to the technical effects brought by the implementation manners of the first aspect or the second aspect, which will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0036] The accompanying drawings are included to provide a further understanding of the technical solutions of the present disclosure, constitute a part of the specification, and are used together with the embodiments of the present disclosure to explain the technical solutions of the present disclosure, and do not constitute a limitation on the technical solutions of the present disclosure.

[0037] FIG. 1 is a structural diagram of a vehicle according to some embodiments;

[0038] FIG. 2 is a partial structural diagram of a hybrid assembly according to some embodiments;

[0039] FIG. 3 is a partial structural diagram of an engine according to some embodiments;

[0040] FIG. 4 is a structural diagram of a cylinder block according to some embodiments;

[0041] FIG. 5 is a structural diagram of an oil pan according to some embodiments;

[0042] FIG. 6 is a sectional view along line A-A in FIG. 5;

[0043] FIG. 7 is a structural diagram of an oil pan according to some embodiments, from another perspective;

[0044] FIG. 8 is another structural diagram of an oil pan according to some embodiments.

[0045] Reference signs: 1000, vehicle; 100, vehicle body; 200, wheel; 300, hybrid assembly; 10, engine; 11, engine body; 111, cylinder block; 1111, first cylinder block; 1111A, first inlet; 1112, second cylinder block; 1112A, second inlet; 12, oil pan; 12A, bottom wall; 12B, first side wall; 12C, second side wall; 12D, third side wall; 12E, fourth side wall; 120, liquid outlet; 121, coolant passage; 1211, first passage; 1212, second passage; 122, first liquid outlet; 123, second liquid outlet; 124, liquid inlet; 125, third liquid outlet; 126, oil storage groove; 127, process hole; 128, flow distribution area; 13, flow passage; 131, coolant pipeline; 14, cover body; 20, motor. DETAILED DESCRIPTION

[0046] The technical solutions in the embodiments of the present disclosure will be described clearly and completely below in combination with the drawings in the embodiments of the present disclosure. However, the described embodiments are only part of the embodiments of the present disclosure, rather than all the embodiments. Based on the embodiments in the present disclosure, all other embodiments obtained by those skilled in the art without making creative efforts fall within the scope of protection of the present disclosure.

[0047] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present disclosure are only used to explain the relative positional relationship, motion condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications also change accordingly.

[0048] The terms "first", "second", etc. are only for descriptive purposes and should not be construed as indicating or implying relative importance or implying the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present disclosure, unless otherwise specified and limited, the meaning of "a plurality of" is two or more.

[0049] In the description of the present disclosure, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected", "connected" should be understood broadly, for example, it can be fixedly connected, or detachably connected, or integrally connected. For those skilled in the art, the specific meaning of the above terms in the present disclosure can be understood according to the specific circumstances. In addition, when describing the pipeline, the "connected" and "connected" used in the present disclosure have the meaning of conducting. The specific meaning needs to be understood in combination with the context.

[0050] In the embodiments of the present disclosure, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration, at 99 least with respect to the matters described at that point in the disclosure. The absence of the words "exemplary" or "for example" does not mean that the disclosure relates to only that example or illustration. In other words, the disclosure is not limited to that example or illustration.

[0051] In the description of the present disclosure, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0052] The demand for high performance and compactness puts higher requirements on the engine cooling system. High performance can cause the temperature between two adjacent cylinders of the engine to be very high. If there is no reasonable cooling system to reduce the temperature between the cylinders, the high temperature between the cylinders can cause a series of problems such as deformation of the cylinder hole of the engine, high oil consumption, high piston blow-by, and even cylinder pulling.

[0053] To this end, in the related art, a cooling device is arranged in the cylinder block, and a cooling liquid pipeline that communicates with the cooling device is arranged outside the engine. The cooling liquid pipeline can provide cooling liquid for the cooling device, so as to take away the heat of the cylinder block, thereby achieving cooling of the cylinder block.

[0054] However, if the engine is a multi-cylinder engine, the cooling liquid pipeline needs to be provided with multiple branch pipelines that respectively communicate with the cooling devices in the multiple cylinder blocks. In this way, the volume occupied by the engine and the cooling liquid pipeline will undoubtedly be large, which is not conducive to the compactness and miniaturization of the engine.

[0055] Therefore, some embodiments of the present disclosure provide a vehicle 1000. The vehicle 1000 can be a pure electric vehicle, a hybrid electric vehicle, a plug-in hybrid electric vehicle, a fuel vehicle, etc. The vehicle 1000 can also be a sedan, a van, a bus, a truck, a trailer, etc.

[0056] As shown in FIG. 1, FIG. 1 is a structural diagram of a vehicle provided by some embodiments of the present disclosure. The vehicle 1000 includes a vehicle body 100 and vehicle wheels 200. The vehicle body 100 is used for passengers to ride and carry articles. The vehicle wheels 200 are installed below the vehicle body 100 and are used to carry the vehicle body 100 and can roll on the road surface to enable the vehicle 1000 to travel.

[0057] In some embodiments, the vehicle 1000 can also include a hybrid assembly 300 (as shown in FIG. 2). The hybrid assembly 300 is arranged on the vehicle body 100.

[0058] In some examples, the hybrid assembly 300 can be a drive assembly. The drive assembly is configured to convert electrical energy or thermal energy into mechanical energy, and transmit the mechanical energy to the wheels 200 to drive the wheels 200 to rotate, so that the vehicle 1000 can move.

[0059] In some examples, the hybrid assembly 300 can also be a power generation assembly. The power generation assembly is configured to convert other forms of energy (such as heat generated by fuel combustion, etc.) into electrical energy. The power generation assembly can transmit the electrical energy to the drive assembly to drive the wheels 200 to rotate.

[0060] As shown in FIG. 2, FIG. 2 is a partial structural diagram of a hybrid assembly according to some embodiments of the present disclosure. In some embodiments, the hybrid assembly 300 can include an engine 10. The engine 10 is an energy conversion device, and can convert thermal energy generated by fuel combustion or other forms of energy into mechanical energy, thereby driving the wheels 200 to rotate.

[0061] The engine 10 can be an internal combustion engine, an external combustion engine, a jet engine, etc., which is not limited in the present disclosure.

[0062] In some embodiments, the hybrid assembly 300 can include a motor 20. The motor is configured to convert electrical energy into mechanical energy, thereby driving the wheels 200 to rotate.

[0063] In some embodiments, the vehicle 1000 is a hybrid vehicle, and the hybrid assembly 300 can include the engine 10 and the motor 20.

[0064] It should be noted that in a hybrid vehicle, the relative positions of the engine 10 and the motor 20 can be affected by the power transmission path of the hybrid assembly 300. In order to simplify the power transmission system, reduce energy loss or improve transmission efficiency, as shown in FIG. 2, the engine 10 can be arranged above the motor 20.

[0065] As shown in FIG. 3, FIG. 3 is a partial structural diagram of an engine according to some embodiments of the present disclosure. The engine 10 can include a body 11 and an oil pan 12.

[0066] The oil pan 12 is provided with a cooling liquid passage 121 (as shown in FIG. 5 and FIG. 6), and the oil pan is further provided with a liquid outlet 120 in communication with the cooling liquid passage. The liquid outlet 120 is in communication with the body 11.

[0067] The body 11 can include a cylinder block 111 and a cylinder head. In some examples, the liquid outlet 120 can be in communication with the cylinder block 111. Of course, the liquid outlet 120 can also be in communication with the cylinder head, which is not limited in the present disclosure.

[0068] A cylinder head is arranged above the cylinder block 111. The cylinder head is used to close the cylinder block 111 to form a sealed combustion space together with the cylinder block 111. In the combustion space, the pistons can normally compress fuel and mixed gas to generate power.

[0069] It can be understood that during the operation of the engine 10, lubricating oil is needed to reduce the friction and wear between various moving parts (such as the crankshaft), thereby improving the service life of the engine 10. In order to facilitate the collection of lubricating oil, the oil pan 12 is arranged below the engine block 11. That is, the oil pan 12 can be arranged below the cylinder block 111. In this way, it can be ensured that the lubricating oil in the cylinder block 111 is fully returned and stored in the oil pan 12 under the action of gravity for continuous use of the engine 10.

[0070] The cylinder block 111 can provide support and positioning for the pistons, crankshafts and other components of the engine 10, ensuring that they can move according to the predetermined trajectory and speed. The cylinder block 111 can be made of high-strength and high-rigidity material. For example, the material of the cylinder block 111 can be cast iron or aluminum alloy, thereby ensuring the stability and durability of the engine 10 during high-speed operation.

[0071] As shown in FIG. 3 and FIG. 4, FIG. 4 is a structural diagram of a cylinder block provided by some embodiments of the present disclosure. In some embodiments, the cylinder block 111 can include a first cylinder block 1111 and a second cylinder block 1112. The first cylinder block 1111 and the second cylinder block 1112 are both arranged above the oil pan 12.

[0072] As shown in FIG. 2, the oil pan 12 can be arranged between the motor 20 and the cylinder block 111. That is, the oil pan 12 can be arranged between the motor 20 and the first cylinder block 1111 and between the motor 20 and the second cylinder block 1112. In this way, the structure of the hybrid assembly 300 is compact, which is conducive to the miniaturization of the hybrid assembly 300.

[0073] In some embodiments, the first cylinder block 1111 and the second cylinder block 1112 can be connected together by sealing glue, connectors or the like. For example, the connector can be a bolt, a rivet or the like, which is not limited in the present disclosure. In some embodiments, the first cylinder block 1111 and the second cylinder block 1112 can also be an integral structure. For example, the first cylinder block 1111 and the second cylinder block 1112 can be cast by an integral molding process.

[0074] When the first cylinder block 1111 and the second cylinder block 1112 are applied to the engine 10, the first cylinder block 1111 and the second cylinder block 1112 can be arranged in a horizontal direction.

[0075] For example, the engine 10 can be a horizontally opposed engine 10. The horizontally opposed engine 10 has a first cylinder block 1111 and a second cylinder block 1112 arranged in a first direction, and the engine block 11 and the oil pan 12 can be arranged in a second direction perpendicular to the first direction. That is, the first cylinder block 1111 and the second cylinder block 1112 are arranged in a horizontal direction (i.e., in the X-axis direction in FIG. 4).

[0076] Since the horizontally opposed engine 10 requires the first cylinder block 1111 and the second cylinder block 1112 to be arranged at an angle of 180 degrees, the arrangement allows the pistons of the first cylinder block 1111 and the second cylinder block 1112 to reciprocate in the horizontal direction (i.e., in the X-axis direction in FIG. 4). If the two cylinder blocks are provided as a single structure, the design and manufacturing complexity will be greatly increased. Therefore, to ensure that the first cylinder block 1111 and the second cylinder block 1112 can be aligned at a precise position and angle, and to ensure the tight fit and sealing between the components, the first cylinder block 1111 and the second cylinder block 1112 can be provided as separate structures, and the first cylinder block 1111 and the second cylinder block 1112 are connected by a connecting member.

[0077] Since the cylinder block 111 bears various loads as a mounting skeleton of the engine 10, and the cylinder bore of the cylinder block 111 is used to mount the piston and seal the combustion chamber. Therefore, as a part of the combustion chamber, the cylinder bore needs to bear not only the pressure generated by combustion, but also the high temperature generated by the friction of the piston. In particular, the heat generated in the upper portion of the combustion chamber accumulates in the upper portion of the cylinder bore. If the cylinder block 111 cannot be cooled in time, the cylinder bore and the piston will be deformed due to overheating, causing abnormal friction between the piston and the cylinder, resulting in a piston seizure failure, and leading to the engine 10 being scrapped.

[0078] Therefore, in some embodiments, the engine block 11 can further include a cooling device. The cooling device can have a cooling passage formed therein. The cooling device can include a first cooling device and a second cooling device, the first cooling device having a first cooling passage formed therein, and the second cooling device having a second cooling passage formed therein.

[0079] In some embodiments, at least a portion of the first cooling passage is arranged in the first cylinder block 1111, and the first cooling passage is configured to at least cool the first cylinder block 1111. At least a portion of the second cooling passage is arranged in the second cylinder block 1112, and the second cooling passage is configured to at least cool the second cylinder block 1112.

[0080] The first cooling device and the second cooling device can each be a heat exchange assembly having a cooling liquid flowing through the cooling passage. The cooling liquid can exchange heat with the cylinder block 111 to reduce the temperature of the cylinder block 111.

[0081] In some embodiments, the cylinder head can include a first cylinder head and a second cylinder head. The first cylinder head can be arranged on the side of the first cylinder block 1111 facing away from the oil pan 12, and is configured to enclose the first cylinder block 1111 to form a sealed combustion space together with the first cylinder block 1111. The second cylinder head can be arranged on the side of the second cylinder block 1112 facing away from the oil pan 12, and is configured to enclose the second cylinder block 1112 to form a sealed combustion space together with the second cylinder block 1112.

[0082] At least part of the first cooling channel can be arranged in the first cylinder head, and the first cooling channel is configured to cool the first cylinder head. At least part of the second cooling channel can be arranged in the second cylinder head, and the second cooling channel is configured to cool the second cylinder head. In this way, the cooling of the cylinder head can be achieved by arranging the cooling channel on the cylinder head.

[0083] As shown in FIG. 5, in order to avoid the heat from accumulating in the coolant in the heat exchange assembly, the engine 10 can further include a flow channel 13. The flow channel 13 is in communication with the first cooling channel and the second cooling channel, and is configured to provide the coolant for the first cooling channel and the second cooling channel.

[0084] In some embodiments, the flow channel 13 is a circulation channel. For example, the two ends of the flow channel 13 are in communication with the inlet and the outlet of the cooling channel, respectively, to form a cooling circulation loop.

[0085] The flow channel 13 can further be provided with a heat exchange device configured to transfer the heat of the coolant in the flow channel 13 to other medium (such as air). The heat exchange device can be a plate heat exchanger, a tube heat exchanger, a heat pipe heat exchanger, etc., and the present disclosure is not limited in this regard.

[0086] In addition, in order to ensure that the coolant can circulate in the cooling circulation loop, the flow channel 13 can further be provided with a water pump. The water pump is a device for conveying or pressurizing liquid, and can be a centrifugal pump, an axial flow pump, a mixed flow pump, etc., and the present disclosure is not limited in this regard.

[0087] In this way, the coolant in the flow passage 13 can flow into the cooling passage in sequence under the action of the water pump, and exchange heat with the cylinder block 111 in the cooling passage, and the temperature of the coolant is increased. Then, the coolant flows out to the flow passage 13, and becomes coolant with lower temperature after heat is dissipated in the flow passage 13 by the heat exchange device, and then returns to the cooling passage, so that the coolant circulates in the cooling circulation loop. In this way, by forming a closed cooling circulation loop with the flow passage 13 and the cooling passage, the external impurities can be prevented from entering the flow passage 13, so as to reduce the maintenance cost of the flow passage 13.

[0088] As shown in FIG. 5, FIG. 5 shows a structure diagram of an oil pan according to some embodiments of the present disclosure. In some embodiments, the oil pan 12 is provided with a coolant passage 121, and the oil pan 12 is further provided with a coolant outlet 120 which is in communication with the coolant passage 121. The coolant outlet 120 is in communication with the cooling passage.

[0089] In some embodiments, the coolant outlet 120 can be in communication with the cooling passage in the cylinder block 111. For example, the coolant outlet 120 can be in communication with only the first cooling passage in the first cylinder block 1111. Alternatively, the coolant outlet 120 can be in communication with only the second cooling passage in the second cylinder block 1112. Alternatively, the coolant outlet 120 can be in communication with both the first cooling passage in the first cylinder block 1111 and the second cooling passage in the second cylinder block 1112.

[0090] In some embodiments, the coolant outlet 120 can be in communication with the cooling passage in the cylinder head. For example, the coolant outlet 120 can be in communication with only the first cooling passage in the first cylinder head. Alternatively, the coolant outlet 120 can be in communication with only the second cooling passage in the second cylinder head. Alternatively, the coolant outlet 120 can be in communication with both the first cooling passage in the first cylinder head and the second cooling passage in the second cylinder head.

[0091] In some embodiments, the oil pan 12 can be arranged below the first cylinder block 1111 and the second cylinder block 1112. The coolant outlet 120 can include a first coolant outlet 122 and a second coolant outlet 123, and the first coolant outlet 122 and the second coolant outlet 123 are both in communication with the engine block.

[0092] The first liquid outlet 122 can be in communication with the first cooling channel, and the second liquid outlet 123 can be in communication with the second cooling channel. The first liquid outlet 122, the second liquid outlet 123 and the cooling liquid channel 121 constitute at least part of the flow channel 13. Since the first cylinder block 1111 and the second cylinder block 1112 are located adjacent to each other, the oil pan 12 can be designed to be relatively small, which is conducive to the miniaturization of the hybrid assembly 300. In addition, the cooling water in the first cylinder block 1111 and the second cylinder block 1112 can flow into the corresponding first cylinder head and second cylinder head, which simplifies the water channel structure in the cylinder block 111 and the cylinder head.

[0093] In some embodiments of the present disclosure, the oil pan 12 is provided with the cooling liquid channel 121, and the oil pan 12 is respectively provided with the first liquid outlet 122 and the second liquid outlet 123 in communication with the cooling liquid channel 121. Therefore, the cooling liquid in the cooling liquid channel 121 can flow into the first cooling channel through the first liquid outlet 122 and flow into the second cooling channel through the second liquid outlet 123. In this way, the cooling liquid supply line in communication with the engine 10 only needs to be in communication with the cooling liquid channel 121, that is, in communication with the first cooling channel and the second cooling channel. Compared with the related art, in which multiple branch lines are provided and the multiple branch lines are respectively in communication with the cooling devices in the multiple cylinder blocks (such as the first cylinder block and the second cylinder block), the number of lines connected to the engine 10 can be reduced, the space occupied by the lines in the vehicle body can be reduced, and the compactness and miniaturization of the engine 10 are facilitated.

[0094] In addition, since the oil pan 12 is arranged below the cylinder block 111, the flow rate of the cooling liquid in the cooling liquid channel 121 flowing towards the cooling channel (i.e. the Y-axis direction in FIG. 3) is relatively slow, and thus the flow rate of the cooling liquid flowing in the cooling channel is also relatively slow. In this way, the cooling liquid in the cooling channel can be ensured to be fully heat-exchanged with the cylinder block 111, and the heat dissipation effect of the cylinder block 111 is improved.

[0095] In addition, the lubricating oil is transported to each component requiring lubrication by the oil pump in the engine 10 and then flows back to the oil pan 12. In this process, the lubricating oil absorbs the heat of the internal components of the engine 10. In some embodiments of the present disclosure, by arranging the cooling liquid channel 121 on the oil pan 12, the cooling liquid can be heat-exchanged with the lubricating oil on the oil pan 12 when flowing in the cooling liquid channel 121, thereby having a certain cooling effect on the lubricating oil in the oil pan 12.

[0096] In some embodiments, the first cooling channel and the second cooling channel are in communication, and the liquid outlet 120 includes a first liquid outlet 122 in communication with the cooling liquid channel 121, and the first liquid outlet 122 is in communication with the first cooling channel. In this way, the second cooling channel is in communication with the first cooling channel and the first liquid outlet 122.

[0097] In some embodiments, the oil sump 12 is integrated with the cooling liquid passage 121. For example, the oil sump 12 with the cooling liquid passage 121 can be directly manufactured by a mold, or the cooling liquid passage 121 can be formed on the oil sump 12 after the oil sump 12 is manufactured. In this way, the cooling liquid passage 121 is integrated with the oil sump 12 without the need of a pipeline on the oil sump 12, which reduces the manufacturing process and improves the production efficiency.

[0098] In some embodiments, the oil sump 12 is provided with a cooling liquid pipeline, and the cooling liquid passage 121 is formed in the cooling liquid pipeline. In this way, the cooling liquid pipeline only needs to be added to the oil sump 12 without the need of improving the structure of the oil sump 12, so that the oil sump 12 does not need to be re-molded, thereby reducing the production cost.

[0099] It can be understood that, in some embodiments, the engine block 11 can also include three cylinder blocks 111, and each of the three cylinder blocks 111 is provided with a cooling passage. The oil sump 12 is provided with at least three liquid outlets 120 that communicate with the cooling liquid passages 121, and the three liquid outlets 120 can communicate with the cooling passages in the three cylinder blocks 111 one by one. In other embodiments, the engine block 11 can include four or five cylinder blocks 111, and the oil sump 12 is provided with at least the same number of liquid outlets 120 as the cylinder blocks 111, and the plurality of liquid outlets 120 communicate with the cooling passages in the plurality of cylinder blocks 111 one by one, which is not limited in the present disclosure.

[0100] As shown in FIG. 5, in some embodiments, the oil sump 12 is further provided with a liquid inlet 124 that communicates with the cooling liquid passage 121. The liquid inlet 124 constitutes at least part of the flow passage 13.

[0101] As shown in FIG. 2, the flow passage 13 can also include a cooling liquid pipeline 131, and the cooling liquid pipeline 131 can be provided with the heat exchange device and the water pump described above, and the cooling liquid pipeline 131 can communicate with the liquid inlet 124.

[0102] In this way, the cooling liquid pipeline 131 only needs to communicate with the liquid inlet 124 on the oil sump 12 to realize the communication with the first cooling passage and the second cooling passage. The cooling liquid pipeline 131 only needs to be assembled with the oil sump 12 once, which reduces the assembly time and the production cost.

[0103] In some embodiments, as shown in FIG. 8, the oil sump 12 can include a top surface provided with an oil storage groove 126, a bottom surface opposite to the top surface, and a side surface surrounding the oil storage groove 126. The liquid inlet 124 can be arranged on the side surface, and the liquid outlet 120 can be arranged on the top surface.

[0104] Since the engine body 11 is usually arranged above the oil pan 12, by arranging the liquid outlet 120 on the top surface, not only the communication between the engine body 11 and the liquid outlet 120 can be facilitated, but also the length of the cooling liquid passage 121 on the oil pan 12 can be reduced, thereby reducing the production cost. In addition, by arranging the liquid inlet 124 on the side surface, when the motor 20 is arranged on the side of the oil pan 12 away from the engine body 11, the communication between the oil pan 12 and the cooling liquid pipeline 131 can be avoided.

[0105] In some embodiments, the liquid inlet 124 can also be arranged on the top surface or the bottom surface of the oil pan 12, and the liquid outlet 120 can be arranged on the side surface or the bottom surface of the oil pan 12, which is not limited in the present disclosure.

[0106] In order to improve the intake density of the engine 10, in some embodiments, the engine 10 further comprises a supercharger. The supercharger compresses air to enable more air to enter the cylinder block 111 of the engine 10, so that the engine 10 can spray more oil, thereby improving the power and torque of the engine 10.

[0107] For example, the supercharger can be a turbocharger. The turbocharger can use the exhaust gas discharged by the engine 10 to drive the turbine to rotate, and then drive the impeller coaxial with the turbine to rotate, so as to compress the air and send it into the cylinder. This supercharging method does not consume the power of the engine 10, and can effectively improve the intake pressure and density of the engine 10, thereby increasing the output power and torque.

[0108] For another example, the supercharger can also be a mechanical supercharger, an electric supercharger, or a gas wave supercharger, which is not limited in the present disclosure.

[0109] As shown in FIGS. 6 and 7, FIG. 6 is a sectional view along the line A-A in FIG. 5, and FIG. 7 is a structural view of the oil pan from another perspective according to some embodiments of the present disclosure. Since the supercharger rotates at high speed during operation, a large amount of heat is generated. If the heat is not dissipated in time and effectively, the temperature inside the supercharger will rise, thereby affecting the performance and service life of the supercharger. Moreover, high temperature can cause the performance of the material of the supercharger to decrease, the lubricating oil to fail, and the sealing element to be damaged, etc. Therefore, in order to ensure the normal operation and long-term durability of the supercharger, a cooling and heat exchange pipeline is arranged on the supercharger, and a third liquid outlet 125 in communication with the cooling liquid passage 121 is further arranged on the oil pan 12, and the third liquid outlet 125 is in communication with the cooling and heat exchange pipeline. The outlet of the supercharger cooling and heat exchange pipeline can also be in communication with a heat exchange device.

[0110] In this way, the coolant in the coolant passage 121 can also flow to the cooling heat exchange pipeline on the supercharger through the third outlet 125 to exchange heat with the supercharger, so as to cool the supercharger. In this way, the channel for providing coolant for the cooling heat exchange pipeline of the supercharger does not need to be additionally arranged, the production and manufacturing difficulty of the engine 10 is reduced, and the production efficiency of the engine 10 is improved.

[0111] As shown in FIGS. 3 and 4, in some embodiments, the engine body 11 is provided with an inlet 11A, and the cooling device includes a water jacket. The water jacket constitutes at least part of the cooling passage, and at least part of the water jacket is arranged in the engine body 11, and the inlet 11A is communicated with the outlet 120 and the water jacket.

[0112] The water jacket can be a cavity on at least one of the cylinder block 111 or the cylinder head. The cavity is configured to accommodate the circulating coolant, so that the coolant effectively takes away the heat generated by the engine 10 combustion chamber and the inner wall of the cylinder block 111, and ensures that the engine 10 operates in an appropriate operating temperature range.

[0113] In some embodiments, as shown in FIG. 3, the inlet 11A can be arranged on the cylinder block 111. Since the cylinder head is usually arranged on the side of the cylinder block 111 away from the oil pan 12, by arranging the inlet 11A on the cylinder block 111, the outlet 120 on the oil pan 12 is closer to the cylinder block 111, so that the communication between the outlet 120 and the inlet 11A is more convenient. In some embodiments, the inlet 11A can also be arranged on the cylinder head. For the convenience of description, some embodiments of the disclosure are described by taking the inlet 11A arranged on the cylinder block 111 as an example.

[0114] In some embodiments, as shown in FIG. 3, the inlet 11A includes a first inlet 1111A arranged on the first cylinder block 1111 and a second inlet 1112A arranged on the second cylinder block 1112.

[0115] The water jacket can include a first water jacket arranged at least partially in the first cylinder block and a second water jacket arranged at least partially in the second cylinder block. The first inlet 1111A is communicated with the first outlet 122 and the first water jacket, and the second inlet 1112A is communicated with the second outlet 123 and the second water jacket.

[0116] In this way, the coolant flowing out of the first outlet 122 exchanges heat with the first cylinder block 1111 in the first water jacket, and the coolant flowing out of the second outlet 123 exchanges heat with the second cylinder block 1112 in the second water jacket, so as to cool the first cylinder block 1111 and the second cylinder block 1112.

[0117] In some embodiments, the inlet 11A can also include a first inlet 1111A arranged on the first cylinder block 1111 and a second inlet 1112A arranged on the second cylinder block 1112.

[0118] The water jacket includes a first water jacket arranged at least partially in the first cylinder block 1111 and a second water jacket arranged at least partially in the second cylinder block 1112, the first water jacket constituting at least part of the first cooling passage, and the second water jacket constituting at least part of the second cooling passage. The first inlet 1111A is connected to the first outlet 122 and the first water jacket;

[0119] In addition, the first cylinder block 1111 can also be provided with a first outlet connected to the first water jacket; and the second inlet 1112A is connected to the first outlet and the second water jacket.

[0120] In this way, the first water jacket and the second water jacket are connected through the first outlet on the first cylinder block, so that the cooling liquid flowing out of the cooling liquid passage 121 can flow into the second water jacket in sequence through the first outlet 122, the first inlet 1111A, the first water jacket, the first outlet, the second inlet 1112A, so as to cool the second cylinder block 1112.

[0121] As shown in FIGS. 3 and 4, the first inlet 1111A can be arranged on the bottom wall of the first cylinder block 1111 (i.e., the wall surface of the first cylinder block 1111 close to the oil pan 12), and the second inlet 1112A can also be arranged on the bottom wall of the first cylinder block 1111. In this case, the first outlet 122 and the second outlet 123 can be arranged on the top wall of the oil pan 12 (i.e., the wall surface of the oil pan 12 close to the cylinder block 111).

[0122] In this way, the connection mode of the first outlet 122 and the first inlet 1111A and the second outlet 123 and the second inlet 1112A is simple. After the oil pan 12 is connected to the first cylinder block 1111 and the second cylinder block 1112, the first outlet 122 is connected to the first inlet 1111A, and the second outlet 123 is connected to the second inlet 1112A.

[0123] In some embodiments, the cooling device can also be a cooling heat exchanger, which can also be referred to as a heat exchanger. The heat exchanger is a device for transferring part of the heat of a hot fluid to a cold fluid.

[0124] The cooling heat exchanger can include a first heat exchange passage and a second heat exchange passage. Heat exchange medium (e.g., coolant, refrigerant, etc.) flowing in the first heat exchange passage can exchange heat with heat exchange medium flowing in the second heat exchange passage. The first heat exchange passage can be in communication with the cooling passage to form a circulation loop. The second heat exchange passage can be in communication with a passage in at least one of the cylinder block 111 or the cylinder head to form a circulation loop. The heat exchange medium flowing in the first heat exchange passage and the heat exchange medium flowing in the second heat exchange passage can be the same or different, which is not limited in the present disclosure.

[0125] In this way, the first heat exchange passage and the second heat exchange passage are not in communication, so that two different heat exchange media suitable for the environment in which the cooling passage and the passage in at least one of the cylinder block 111 or the cylinder head are located can be determined, which is conducive to improving the cooling effect of the engine.

[0126] In some embodiments, the cooling device can also be a thermostat of the engine 10, which can also be referred to as a temperature regulator. The thermostat is an automatic temperature regulating device, which usually contains a temperature sensing component and can automatically open or close the flow of air, gas or liquid according to temperature changes. The thermostat of the engine can automatically adjust the amount of water entering the radiator according to the temperature of the coolant, change the circulation range of the water, and thus adjust the heat dissipation capacity of the engine to ensure that the engine works in a suitable temperature range.

[0127] The thermostat can be a paraffin thermostat or an electronic thermostat, which is not limited in the present disclosure.

[0128] In this way, the thermostat of the engine 10 can automatically adjust the amount of water entering the radiator according to the temperature of the coolant, so as to change the circulation range of the water to accurately control the cooling effect of the engine 10. Moreover, the engine 10 can be ensured to work in a suitable temperature range, neither too hot nor too cold, which is conducive to the stable operation and performance of the engine 10.

[0129] As shown in FIG. 8, which is another structure diagram of the oil pan provided in some embodiments of the present disclosure, an oil storage groove 126 is formed on the oil pan 12. The oil pan 12 with the oil storage groove 126 can be prepared by pouring molten metal into a mold and solidifying the molten metal. In order to facilitate demolding of the oil storage groove 126 from the mold, at least part of the coolant passage 121 is arranged below the oil storage groove 126.

[0130] For example, as shown in FIG. 8, the cooling liquid passage 121 can be arranged on the bottom wall surface of the oil pan 12, and the side wall portion surrounding the cooling liquid passage 121 can be protruded from the bottom wall of the oil storage groove 126. In this way, by arranging the cooling liquid passage 121 on the bottom wall of the oil storage groove 126, compared with arranging the cooling liquid passage 121 completely in the oil storage groove 126, not only the oil storage capacity of the oil storage groove 126 can be improved, but also the processing and production of the oil pan 12 can be facilitated. For example, when the cooling liquid passage 121 is arranged in the oil storage groove 126, the structure of the oil storage groove 126 formed in the mold can be interfered by the cooling liquid passage 121 when demolding, thereby affecting the processing and production efficiency of the oil pan 12.

[0131] It should be noted that the arrangement positions of the first liquid outlet 122 and the second liquid outlet 123 depend on the positions of the first inlet 1111A and the second inlet 1112A. Therefore, in some embodiments, the first liquid outlet 122 and the second liquid outlet 123 are arranged on the opposite two side walls surrounding the oil storage groove 126.

[0132] As shown in FIG. 8, the oil pan 12 includes a bottom wall 12A and a first side wall 12B, a second side wall 12C, a third side wall 12D and a fourth side wall 12E connected in sequence. The bottom wall 12A is connected below the first side wall 12B, the second side wall 12C, the third side wall 12D and the fourth side wall 12E, and forms an oil storage groove with the first side wall 12B, the second side wall 12C, the third side wall 12D and the fourth side wall 12E. The first liquid outlet 122 is arranged on the first side wall 12B, and the second liquid outlet 123 is arranged on the second side wall 12C.

[0133] In order to enable the cooling liquid passage 121 to communicate with the first liquid outlet 122 and the second liquid outlet 123, in some embodiments, as shown in FIGS. 6 and 7, the cooling liquid passage 121 can include a first passage 1211 and a second passage 1212.

[0134] The first passage 1211 is formed at the connection between the first side wall 12B and the bottom wall 12A, and communicates with the first liquid outlet 122 arranged on the first side wall 12B. The first passage 1211 is arranged along the extension direction of the first side wall 12B, and communicates with the second passage 1212 arranged on the second side wall 12C. The second passage 1212 is arranged along the extension direction of the second side wall 12C, and communicates with the second liquid outlet 123 arranged on the second side wall 12C.

[0135] In this way, by connecting the two water channels with different extension directions (i.e. the first passage 1211 and the second passage 1212), the flow direction of the water flow is changed, so that the cooling liquid passage 121 can communicate with the first liquid outlet 122 and the second liquid outlet 123.

[0136] In some embodiments, the first channel 1211 has a different extension direction than the second channel 1212. That is, the first channel 1211 and the second channel 1212 are arranged at a set angle.

[0137] For example, as shown in FIG. 6, the first channel 1211 and the second channel 1212 can be arranged perpendicularly. For another example, the first channel 1211 and the second channel 1212 can also be arranged at an angle of 45 degrees, 50 degrees, 55 degrees, etc., which is not limited in the present disclosure.

[0138] In this way, by connecting the two channels (i.e., the first channel 1211 and the second channel 1212) with different extension directions, the flow direction of the cooling liquid is changed, so that when the inlet 124 and the outlet 120 are not arranged on the same plane, the inlet 124 and the outlet 120 can be connected by the first channel 1211 and the second channel 1212 with different extension directions.

[0139] In some embodiments, the first channel 1211 and the second channel 1212 can be formed by pouring molten metal into a mold when the oil pan 12 is cast, so that the oil pan 12 with the first channel 1211 and the second channel 1212 is cast. In this way, the first channel 1211 and the second channel 1212 are easy to process, the process of opening the first channel 1211 and the second channel 1212 is reduced, and the production efficiency is improved. In other embodiments, the first channel 1211 and the second channel 1212 can also be formed by lathe processing.

[0140] In order to facilitate the removal of the mold from the first channel 1211, in some embodiments, the inner diameter of the first channel 1211 gradually decreases in the direction from the inlet 124 to the second channel 1212.

[0141] In some embodiments, the inner diameter of the first channel 1211 gradually decreases in the direction from the inlet 124 to the second channel 1212.

[0142] In some embodiments, the inner diameter of at least part of the first channel 1211 gradually decreases in the direction from the inlet 124 to the second channel 1212.

[0143] For example, the inner diameter of the first channel 1211 can first remain unchanged, then gradually decrease to a preset diameter, and finally remain unchanged in the direction from the inlet 124 to the second channel 1212.

[0144] For another example, the inner diameter of the first channel 1211 can first gradually decrease to a preset diameter, and then remain unchanged in the direction from the inlet 124 to the second channel 1212.

[0145] For example, along the direction from the liquid inlet 124 to the second channel 1212, the inner diameter of the first channel can first gradually decrease, then remain unchanged, and then gradually decrease to a preset diameter.

[0146] In addition, the central axis of the liquid inlet 124 is collinear with the central axis of the first channel 1211. That is, the liquid inlet 124 is a casting outlet of the casting mold.

[0147] In this way, along the direction from the liquid inlet 124 to the second channel 1212, the outer diameter of the casting mold gradually decreases, so that it is convenient to take out the casting mold from the liquid inlet 124. Since the liquid inlet 124 is a casting outlet of the casting mold, the casting outlet does not need to be blocked and can be directly used as a port connected with the cooling pipeline, thereby reducing the process of additionally opening the liquid inlet 124. In addition, when the cooling liquid flows along the direction from the liquid inlet 124 to the second channel 1212, the inner diameter of the first channel 1211 gradually decreases, so that the flow rate of the cooling liquid in the first channel 1211 can be improved.

[0148] In some other embodiments, along the direction from the liquid inlet 124 to the second channel 1212, the inner diameter of the first channel 1211 remains unchanged. In this way, the flow rate of the cooling liquid in the first channel 1211 is stable, the interference with the flow rate of the cooling liquid in the cooling circulation loop is reduced, and high-precision control of heat exchange of the cooling device is achieved.

[0149] In some embodiments, as shown in FIG. 6, the oil pan 12 is further provided with a process hole 127. The process hole 127 is in communication with the second channel 1212, the central axis of the process hole 127 is collinear with the central axis of the second channel 1212, and one end of the process hole 127 opposite to the second channel 1212 penetrates the oil pan 12.

[0150] Similarly, in order to facilitate taking out the casting mold from the second channel 1212, in some embodiments, the process hole 127 and the second liquid outlet 123 are arranged at intervals along the extension direction of the second channel 1212, and along the direction from the process hole 127 to the second liquid outlet 123, the inner diameter of the second channel 1212 gradually decreases.

[0151] Similarly, in some embodiments, along the direction from the process hole 127 to the second liquid outlet 123, the inner diameter of the second channel 1212 gradually decreases.

[0152] In some embodiments, along the direction from the process hole 127 to the second liquid outlet 123, the inner diameter of at least part of the second channel 1212 gradually decreases.

[0153] For example, along the direction from the process hole 127 to the second liquid outlet 123, the inner diameter of the second channel 1212 can first remain unchanged, then gradually decrease to a preset diameter, and finally remain unchanged again.

[0154] For example, the inner diameter of the second passage 1212 can gradually decrease to a preset diameter along the direction from the process hole 127 to the second liquid outlet 123.

[0155] For example, the inner diameter of the second passage 1212 can gradually decrease along the direction from the process hole 127 to the second liquid outlet 123, and then remain unchanged. After that, the inner diameter of the first passage gradually decreases to a preset diameter, and then remains unchanged.

[0156] In this way, the outer diameter of the casting gradually decreases along the direction from the process hole 127 to the second liquid outlet 123, so that the casting is convenient to take out from the process hole 127. In addition, when the cooling liquid flows along the second passage 1212, the inner diameter of the second passage 1212 gradually decreases, so that the flow rate of the cooling liquid in the second passage 1212 can be improved.

[0157] In some embodiments, as shown in FIG. 6, the engine 10 further includes a cover 14. The cover 14 is arranged at the process hole 127 and is configured to block the process hole 127. The cover 14 can be a threaded plug. In this way, the leakage of the cooling liquid from the process hole can be avoided.

[0158] In some embodiments, the process hole 127 is the third liquid outlet 125 described above. In this way, the process hole 127 is communicated with the cooling heat exchange pipeline of the supercharger without additional ports, so that the production process of the engine 10 is reduced and the production efficiency is improved.

[0159] In addition, in some embodiments, as shown in FIG. 6, the first liquid outlet 122 can be arranged at the liquid inlet 124, and the central axis of the first liquid outlet 122 can be perpendicular to the central axis of the liquid inlet 124. The liquid inlet 124 has a flow distribution area 128 which is communicated with the first liquid outlet 122 and the first passage 1211, respectively. In this way, the cooling liquid entering from the liquid inlet 124 can flow into the first liquid outlet 122 and the first passage 1211 through the flow distribution area 128, respectively. The diameter of the flow distribution area 128 is greater than the maximum inner diameter of the first passage 1211.

[0160] In addition, the diameter of the flow distribution area 128, the inner diameters of the first passage 1211 and the second passage 1212 can be obtained by simulation calculation. The diameter of the flow distribution area 128, the inner diameters of the first passage 1211 and the second passage 1212 need to ensure that the water flow rates in the first cylinder block 1111 and the second cylinder block 1112 are similar, so that the temperature difference between the first cylinder block 1111 and the second cylinder block 1112 is small.

[0161] The term "comprise" and variations of the term such as "comprising", "comprises" and "comprised", as used herein, are intended to be open-ended terms that specify the presence of the stated features, elements, components, groups, integers, or steps, but do not preclude the presence or addition of one or more other features, elements, components, groups, integers, or steps.

[0162] The term "attached" or "attach", as used herein, includes a configuration in which an element is directly secured to another element by affixing the element to the other element; a configuration in which the element is indirectly secured to the other element by affixing the element to an intermediate member that, in turn, is affixed to the other element; and a configuration in which one element is integral with the other element, i.e., the element is essentially a portion of the other element. The definition also applies to words of similar meaning, such as "connected", "coupled", "engage", "mount", "bond", "secure", and derivatives thereof. Finally, the degree terms such as "substantially", "approximately" and "about" as used herein mean an acceptable quantity of deviation from a true value of a quantity so that the end result is not significantly changed.

[0163] "A, B, and C at least one of" has the same meaning as "at least one of A, B, or C", and includes the following combinations: only A, only B, only C, a combination of A and B, a combination of A and C, a combination of B and C, and a combination of A, B, and C.

[0164] Unless otherwise defined, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this disclosure. Features described herein in one embodiment can be applied in another embodiment, unless the features are not applicable in the other embodiment or are otherwise stated to be not applicable in the other embodiment.

[0165] The present disclosure has been described with reference to the above embodiments, but it is understood that the above embodiments are merely for the purpose of illustration and description, and are not intended to limit the present disclosure to the described embodiments. Furthermore, those skilled in the art can understand that the present disclosure is not limited to the above embodiments, and various modifications and changes can be made to the present disclosure according to the teachings of the present disclosure, and such modifications and changes fall within the scope of the present disclosure claimed.

Claims

1. An oil sump (12), wherein, The oil sump (12) is provided with a cooling liquid passage (121), and the oil sump (12) is provided with a liquid outlet (120) in communication with the cooling liquid passage (121), and the liquid outlet (120) is configured to communicate with the engine block (11).

2. The oil pan (12) according to claim 1, wherein, The liquid outlet (120) comprises a first liquid outlet (122) and a second liquid outlet (123) in communication with the cooling liquid passage (121), and the first liquid outlet (122) and the second liquid outlet (123) are configured to communicate with the engine block (11).

3. The oil sump (12) according to claim 1 or 2, wherein, The oil sump (12) is further provided with a liquid inlet (124) in communication with the cooling liquid passage (121).

4. The oil pan (12) according to any one of claims 1 to 3, wherein, The liquid outlet (120) comprises a third liquid outlet (125) in communication with the cooling liquid passage (121), and the third liquid outlet (125) is configured to communicate with the supercharger.

5. The oil sump (12) according to any one of claims 1 to 4, wherein, The oil sump (12) is further provided with a cooling liquid pipeline in which the cooling liquid passage (121) is formed.

6. The oil sump (12) according to any one of claims 1 to 5, wherein, The oil sump (12) is further provided with a liquid inlet (124) in communication with the cooling liquid passage (121). The oil sump (12) comprises a top surface provided with an oil storage groove (126), a bottom surface opposite to the top surface, and a side surface surrounding the oil storage groove (126); the liquid inlet (124) is arranged on the side surface, and the liquid outlet (120) is arranged on the top surface.

7. The oil sump (12) according to any one of claims 1 to 5, wherein, The oil sump (12) is further provided with a liquid inlet (124) in communication with the cooling liquid passage (121). The oil sump (12) comprises a top surface provided with an oil storage groove (126), a bottom surface opposite to the top surface, and a side surface surrounding the oil storage groove (126); the liquid inlet (124) is arranged on the top surface or the bottom surface, and the liquid outlet (120) is arranged on the side surface or the bottom surface.

8. The oil pan (12) according to claim 2, wherein, The oil sump (12) is further provided with a liquid inlet (124) in communication with the cooling liquid passage (121). The cooling liquid passage (121) comprises a first passage (1211) and a second passage (1212), the first passage (1211) is in communication between the second passage (1212) and the liquid inlet (124), the first liquid outlet (122) is in communication with the first passage (1211), and the second liquid outlet (123) is in communication with the second passage (1212).

9. The oil pan (12) according to claim 8, wherein, The extension direction of the first passage (1211) is inconsistent with the extension direction of the second passage (1212).

10. The oil sump (12) according to claim 8 or 9, wherein, In the direction from the liquid inlet (124) to the second passage (1212), the inner diameter of the first passage (1211) decreases.

11. The oil sump (12) according to any one of claims 8 to 10, wherein, The central axis of the liquid inlet (124) is collinear with the central axis of the first passage (1211).

12. The oil sump (12) according to any one of claims 8 to 11, wherein, The oil sump (12) is further provided with a process hole (127) in communication with the second passage (1212), the center axis of the process hole (127) is collinear with the center axis of the second passage (1212), and the end of the process hole (127) facing away from the second passage (1212) penetrates the oil sump (12).

13. The oil pan (12) according to claim 12, wherein, The process hole (127) and the second liquid outlet (123) are arranged in a spaced manner along the extension direction of the second passage (1212).

14. The oil pan (12) according to claim 13, wherein, The inner diameter of the second passage (1212) decreases in the direction from the process hole (127) to the second liquid outlet (123).

15. The oil sump (12) according to any one of claims 12 to 14, further comprising a cover (14) arranged at the process hole (127) and configured to block the process hole (127).

16. The oil sump (12) according to any one of claims 1 to 15, wherein, The oil sump (12) is further provided with an oil storage groove (126) below which at least part of the cooling liquid passage (121) is arranged.

17. An engine (10) comprising a body (11) and the oil sump (12) according to any one of claims 1 to 16, the oil sump (12) being arranged below the body (11); the body (11) being provided with a cooling passage, the liquid outlet (120) being in communication with the cooling passage.

18. The engine (10) of claim 17, wherein, The body (11) comprises a first cylinder block (1111) and a second cylinder block (1112), the cooling passage comprises a first cooling passage arranged at least partially in the first cylinder block (1111) and a second cooling passage arranged at least partially in the second cylinder block (1112); The liquid outlet (120) comprises a first liquid outlet (122) and a second liquid outlet (123) in communication with the cooling liquid passage (121), the first liquid outlet (122) being in communication with the first cooling passage, and the second liquid outlet (123) being in communication with the second cooling passage.

19. The engine (10) of claim 17, wherein, The body (11) comprises a first cylinder block (1111) and a second cylinder block (1112), the cooling passage comprises a first cooling passage arranged at least partially in the first cylinder block (1111) and a second cooling passage arranged at least partially in the second cylinder block (1112); the first cooling passage is in communication with the second cooling passage; The liquid outlet (120) comprises a first liquid outlet (122) in communication with the cooling liquid passage (121), the first liquid outlet (122) being in communication with the first cooling passage.

20. The engine (10) according to any one of claims 17 to 19, further comprising a supercharger provided with a cooling heat exchange pipeline; the oil sump (12) is further provided with a third liquid outlet (125) in communication with the cooling liquid passage (121), the third liquid outlet (125) being in communication with the cooling heat exchange pipeline.

21. The engine (10) of any one of claims 17-20, wherein, The body (11) is provided with an inlet (11A); The engine (10) further comprises a water jacket, at least part of which constitutes the cooling passage; at least part of the water jacket is arranged in the engine block (11), and the inlet (11A) is communicated with the liquid outlet (120) and the water jacket.

22. The engine (10) of claim 21, wherein, The engine block (11) comprises a first cylinder block (1111) and a second cylinder block (1112), and the cooling passage comprises a first cooling passage arranged at least partially in the first cylinder block (1111) and a second cooling passage arranged at least partially in the second cylinder block (1112); the liquid outlet (120) comprises a first liquid outlet (122) and a second liquid outlet (123) communicated with the cooling liquid passage (121), the first liquid outlet (122) is communicated with the first cooling passage, and the second liquid outlet (123) is communicated with the second cooling passage. The inlet (11A) comprises a first inlet (1111A) arranged on the first cylinder block (1111) and a second inlet (1112A) arranged on the second cylinder block (1112). The water jacket comprises a first water jacket arranged at least partially in the first cylinder block (1111) and a second water jacket arranged at least partially in the second cylinder block (1112), and the first water jacket constitutes at least part of the first cooling passage; the second water jacket constitutes at least part of the second cooling passage. The first inlet (1111A) is communicated with the first liquid outlet (122) and the first water jacket, and the second inlet (1112A) is communicated with the second liquid outlet (123) and the second water jacket.

23. The engine (10) of claim 21, wherein, The engine block (11) comprises a first cylinder block (1111) and a second cylinder block (1112); the cooling passage comprises a first cooling passage arranged at least partially in the first cylinder block (1111) and a second cooling passage arranged at least partially in the second cylinder block (1112); the liquid outlet (120) comprises a first liquid outlet (122) communicated with the cooling liquid passage (121); the first liquid outlet (122) is communicated with the first cooling passage. The inlet (11A) comprises a first inlet (1111A) arranged on the first cylinder block (1111) and a second inlet (1112A) arranged on the second cylinder block (1112). The water jacket comprises a first water jacket arranged at least partially in the first cylinder block (1111) and a second water jacket arranged at least partially in the second cylinder block (1112), and the first water jacket constitutes at least part of the first cooling passage, and the second water jacket constitutes at least part of the second cooling passage; the first inlet (1111A) is communicated with the first liquid outlet (122) and the first water jacket. The first cylinder block (1111) is further provided with a first outlet communicated with the first water jacket; and the second inlet (1112A) is communicated with the first outlet and the second water jacket.

24. The engine (10) of any one of claims 18, 19, 22, 23, wherein, The arrangement direction of the first cylinder (1111) and the second cylinder (1112) is a first direction, the arrangement direction of the engine body (11) and the oil pan (12) is a second direction, and the first direction is perpendicular to the second direction.

25. A hybrid assembly (300) comprising the engine (10) of any one of claims 17 to 24.

26. The hybrid assembly (300) of claim 25, further comprising an electric machine (20), the engine body (11) comprising a first cylinder (1111) and a second cylinder (1112), and the oil pan (12) being disposed between the electric machine (20) and the first cylinder (1111) and the second cylinder (1112).

27. A vehicle (1000) comprising one of: the oil pan (12) of any one of claims 1 to 16; the engine (10) of any one of claims 17 to 24; or the hybrid assembly (300) of claim 25 or 26.

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