Engine

Abstract

The utility model discloses an engine which comprises an engine cylinder body, an engine cylinder cover, an electronic water pump and double thermostats, the engine cylinder cover is arranged on the engine cylinder body, and the electronic water pump and the double thermostats are arranged outside one side of the engine cylinder body side by side. One end of the engine cooling circulation flow channel is connected with a water outlet of the electronic water pump, the other end of the engine cooling circulation flow channel is connected with a water inlet of the double-thermostat, and a water outlet of the double-thermostat is connected with a water inlet of the electronic water pump; moreover, the engine cooling circulation flow channel is arranged in the side wall of the engine cylinder body and the side wall of the engine cylinder cover, and when the engine cylinder cover is fixed to the engine cylinder body, the engine cooling circulation flow channel is a semi-annular flow channel. The whole engine cooling circulation flow channel is integrated in the engine cylinder cover and the engine cylinder body, the size of the engine is smaller, and the requirements for compactness and integration of the engine are met.

Description

Technical Field

[0001] The utility model relates to the technical field related to engines, in particular to an engine. Background Art

[0002] The automotive industry is experiencing a rapid development stage. With the development of vehicle styling design language, induction and low-lying streamlined shapes have become the mainstream of development. In this case, higher requirements are placed on the space size of the engine, so the engine is developing in the direction of high efficiency, compactness and intelligence. Because the application of hybrid power systems will be an important path for the transformation of traditional fuel vehicles, the hybrid transmission has added motors and controllers compared to the transmission of traditional vehicles, and the volume has increased, encroaching on the Z-direction layout space of the rear end of the engine, posing a challenge to the layout of the rear end parts of the engine. The engine needs to be designed to minimize the length dimension and match it well with the hybrid transmission. Therefore, whether it is a traditional fuel engine or a hybrid-specific engine, the requirements for the size of the engine and the accessories are relatively strict. Reducing the size of the engine and reducing the parts around the engine are issues that need to be solved urgently.

[0003] For example, in the prior art, the return pipes of the engine's cooling system are all arranged on the outside of the engine, which will inevitably increase the engine size and occupy part of the installation space. For example, Chinese patent application number CN202210658373.2 discloses a high-efficiency supercharged direct injection engine overall layout, and the cooling pipes are arranged on the outside of the engine. For example, Chinese patent application number CN202223410967.6 discloses a cooling pipe integrated device, a hybrid power system and a vehicle, which are applied to hybrid vehicles. The pipes are also arranged on the side of the engine and will also occupy part of the space. Therefore, how to reduce the engine size in the prior art is an urgent problem to be solved, especially the problem of reducing the occupation of external installation space by peripheral parts of the engine such as cooling pipes.

[0004] Therefore, there is a problem in the prior art that parts on the periphery of the engine, such as cooling pipes, will occupy the external installation space of the engine, thereby increasing the size and installation space of the engine. Utility Model Content

[0005] The purpose of the utility model is to solve the problem in the prior art that parts on the periphery of the engine, such as cooling pipes, will occupy the external installation space of the engine, thereby increasing the size and installation space of the engine.

[0006] To solve the above technical problems, the utility model discloses an engine, including an engine cylinder block, an engine cylinder head, an electronic water pump and a dual thermostat. The engine cylinder head is arranged on the engine cylinder block, and the electronic water pump and the dual thermostat are arranged side by side on the outside of one side of the engine cylinder block.

[0007] It also includes an engine cooling circulation flow channel, one end of the engine cooling circulation flow channel is connected to the water outlet of the electronic water pump, and the other end is connected to the water inlet of the dual thermostat, and the water outlet of the dual thermostat is connected to the water inlet of the electronic water pump; and the engine cooling circulation flow channel is arranged in the side wall of the engine cylinder block and the side wall of the engine cylinder head, and when the engine cylinder head is fixed to the engine cylinder block, the engine cooling circulation flow channel is a semi-annular flow channel.

[0008] By adopting the above technical scheme, an engine cooling circulation flow channel is arranged in the engine cylinder head and the engine cylinder body, and the cooling flow channels and return pipes of the engine cylinder head and the engine cylinder body are all integrated and arranged inside the engine cylinder body and the engine cylinder head. When the engine cylinder head is cooled and the water returns, there is no need to set up a separate pipeline outside the engine, thereby reducing the accessory pipelines of the engine, thereby avoiding the problem of the cooling return pipeline occupying the external installation space of the engine. In addition, because the engine cooling circulation flow channel is entirely integrated in the engine cylinder head and the engine cylinder body, no pipeline is arranged on the periphery of the engine (especially the rear end), thereby reducing the size of the rear end of the engine, making the size of the engine smaller, meeting the compactness and integration improvement of the engine.

[0009] The embodiment of the utility model also discloses an engine, in the flow direction of the engine coolant, the engine cooling circulation flow channel includes a first pipeline that enters the side wall of one side of the engine cylinder body from the water outlet of the electronic water pump and extends upward to the engine cylinder head, a second pipeline that extends in the top wall of the engine cylinder head along the extension direction of the engine cylinder head, and a third pipeline that extends downward from the top to the water inlet of the dual thermostat in the other side wall of the engine cylinder body. When the engine cylinder head is fixed on the engine cylinder body, the outlet of the first pipeline is aligned and connected with the inlet of the second pipeline, and the outlet of the second pipeline is aligned and connected with the inlet of the third pipeline.

[0010] By adopting the above technical solution, the first pipeline that enters the side wall of one side of the engine cylinder block from the water outlet of the electronic water pump and extends upward to the engine cylinder head refers to a cooling pipeline arranged in the engine cylinder block, and the engine cylinder block is cooled when the coolant flows through the first pipeline. The second pipeline extending in the top wall of the engine cylinder head along the extension direction of the engine cylinder head refers to a cooling pipeline arranged in the engine cylinder head, and the engine cylinder head is cooled when the coolant flows through the second pipeline. The third pipeline extending from the top downward to the water inlet of the dual thermostat in the side wall of the other side of the engine cylinder block is actually a return pipeline. After the coolant enters the engine cylinder block and the engine cylinder head from the water outlet and flows along the first pipeline and the second pipeline and performs a cooling cycle, it returns to the dual thermostat through the third pipeline, forming a complete cooling circulation flow channel, and no additional return pipeline is arranged outside the engine, so that the engine is more compact and integrated.

[0011] The embodiment of the utility model also discloses an engine, further comprising a warm air return water channel, the warm air return water channel and the third pipeline are arranged in the other side wall of the engine cylinder body at intervals, and the warm air return water channel forms a hollow internal pipe in the other side wall of the engine cylinder body. In addition, the warm air return water channel runs through the other side wall of the engine cylinder body, the water inlet of the warm air return water channel is connected to the warm air pipeline of the vehicle, and the water outlet is connected to the water inlet of the dual thermostat.

[0012] By adopting the above technical solution, the warm air return channel is also integrated into the other side wall of the engine block, and there is no need to separately set a warm air return pipeline outside the engine block, which further makes the engine more integrated and compact, reduces the overall size of the engine, makes engine installation more convenient, and reduces the engine installation requirements in the vehicle.

[0013] The embodiment of the utility model also discloses an engine, wherein the electronic water pump is cylindrical and fixed to the outside of the engine cylinder body near the engine air intake side. The water inlet of the electronic water pump is coaxially connected to the water outlet of the dual thermostat, and the dual thermostat is also provided with a vehicle circulation water inlet and a vehicle circulation water outlet on the side away from the engine cylinder body, and the vehicle circulation water inlet and the vehicle circulation water outlet are respectively connected to the cooling pipeline of the vehicle circulation; and the vehicle circulation water inlet and the vehicle circulation water outlet are arranged at intervals along the height direction of the engine cylinder body.

[0014] With the above technical solution, the electronic water pump and the dual thermostat are both arranged on the air intake side of the engine and are both set close to the engine cylinder block, no longer occupying the space at the rear end of the engine. The water inlet of the electronic water pump is coaxially connected with the water outlet of the dual thermostat, so that the space occupied by the electronic water pump and the dual thermostat is smaller. Compared with the prior art, the dual thermostat is improved and arranged on the air intake side, which improves the space utilization rate of the air intake side and avoids the space occupied by the rear end of the engine, thereby making the engine more integrated and compact. The vehicle circulation water inlet and the vehicle circulation water outlet are arranged at intervals along the height direction of the engine cylinder block, leaving sufficient installation space for the external fuel tank.

[0015] The embodiment of the utility model also discloses an engine, further comprising a lubrication assembly fixedly arranged outside the engine cylinder body, the lubrication assembly comprising an oil pan, an oil return electronic oil pump, an oil return pipeline and an external oil tank. The oil pan is fixedly arranged at the bottom of the engine cylinder body, the external oil tank is located above the oil pan and fixedly arranged at one side of the engine cylinder body, the oil return electronic oil pump is fixed at one side of the engine cylinder body and is located between the external oil tank and the oil pan in the height direction, the oil suction end of the oil return electronic oil pump is connected to the oil pan, the oil outlet end is connected to the oil return pipeline, and the oil return pipeline is also connected to the external oil tank.

[0016] By adopting the above-mentioned technical scheme, the present application also improves the setting position and structure of the lubrication component, so that the lubrication component and the engine cylinder block are more compact and avoid excessive waste of space. Compared with the traditional oil pan, the oil pan in the present application only plays the role of returning oil collection and temporary storage transition. Therefore, the overall volume of the oil pan is reduced and the height is reduced. The lubricating oil is stored in an external oil tank. When it is reflected on the engine, the overall height of the engine is significantly reduced, the height size of the engine is reduced, and its overall structure is more integrated and compact.

[0017] The embodiment of the utility model also discloses an engine, when looking from the top of the oil pan toward the oil pan, the middle of the oil pan is concave toward the side away from the engine cylinder body, and an oil suction pan is also arranged in the oil pan, and the oil suction end of the oil suction pan faces the bottom side of the oil pan. The pipeline cross section of the oil suction pan is rectangular, and the oil suction pan is connected to the oil suction end of the oil return electronic oil pump.

[0018] The embodiment of the utility model also discloses an engine, one end of the oil return pipeline is fixedly connected to the oil outlet of the oil return electronic oil pump, and the other end is fixedly connected and communicated with the external oil tank, and the connection parts of the two ends of the oil return pipeline are provided with sealing rings.

[0019] With the above technical solution, the oil return line and the oil return electronic oil pump are connected in a straight-in manner and sealed by a sealing ring, without using flange connection, which reduces the space limitation of flange connection and improves compactness. The oil return electronic oil pump can timely transport the lubricating oil in the oil pan to the external oil tank.

[0020] The embodiment of the utility model also discloses an engine, which also includes an electronic oil pump and an oil supply pipeline, wherein the electronic oil pump is arranged on one side of the external oil tank and is connected to the external oil tank. One end of the oil supply pipeline is fixedly connected and connected to the oil outlet of the electronic oil pump, and the other end is connected to the engine oil supply pipeline, and the connection parts of the two ends of the oil supply pipeline are also provided with sealing rings.

[0021] By adopting the above technical solution, the electronic oil pump and the oil supply pipeline provide lubricating oil to the engine and the whole vehicle. The oil supply pipeline and the oil outlet of the electronic oil pump are also connected by direct plug-in and sealed by a sealing ring, which reduces the space limitation of the flange connection in the traditional connection method and improves the compactness of the connection.

[0022] The embodiment of the utility model further discloses an engine, further comprising an external fuel tank liquid level sensor and an oil pan liquid level sensor, wherein the external fuel tank liquid level sensor is located in the external fuel tank, and the oil pan liquid level sensor is located in the oil pan.

[0023] By adopting the above technical solution, an external oil tank level sensor and an oil pan level sensor are provided to monitor the oil quantity status in real time and realize closed-loop control.

[0024] An embodiment of the utility model further discloses an engine, further comprising a crankshaft torsional vibration damper, wherein the crankshaft torsional vibration damper is arranged on the inner side of the engine front cover and located above the oil pan, and the crankshaft torsional vibration damper is connected to the end of the crankshaft of the engine.

[0025] By adopting the above technical solution, the crankshaft torsional vibration damper is arranged on the inner side of the engine front cover, as close to the engine as possible to reduce the size of the front end of the engine. And because the present application adopts an electronic oil pump, compared with traditional engines, there is no need to consider and set up the mechanical transmission subspace of the oil pump, thereby making the engine smaller and more integrated and compact.

[0026] The beneficial effects of the utility model are:

[0027] The utility model discloses an engine, which mainly reduces the overall size of the engine by improving the structure and arrangement of the engine's cooling assembly, lubrication assembly and crankshaft torsional vibration damper, making the engine more integrated and compact as a whole. Specifically, the engine cooling circulation flow channel in the cooling system is integrated into the engine cylinder head and the engine cylinder body, and the warm air return water channel is also integrated into one of the side walls of the engine cylinder body. The return pipe and warm air return pipe are not separately arranged on the periphery of the engine, and the electronic water pump and dual thermostats are arranged on the engine intake side, no longer occupying the rear end space of the engine. Through the above-mentioned integrated arrangement, the engine is more integrated and compact, and does not occupy the rear end space of the engine. The lubrication assembly adopts the method of an oil pan plus an external oil tank to reduce the height size of the engine. The external oil tank is arranged on one side of the engine cylinder body and the engine space is fully utilized, so that the height of the engine is significantly reduced. Furthermore, the peripheral accessories of the engine are electrified, such as the use of electronic water pumps and electronic oil pumps, eliminating the belt-driven accessory gear train required by traditional engines, and using a small-inertia crankshaft torsional vibration damper, which is arranged inside the engine front cover, further reducing the engine size and making it more integrated. This application makes the engine more integrated by significantly reducing the height and length of the engine, and also improves the utilization rate of the peripheral space of the engine. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 A schematic diagram of the structure of an engine cylinder block and an engine cover provided by an embodiment of the utility model;

[0029] Figure 2 A schematic diagram showing only the third pipeline and the warm air return channel in the engine cylinder block and the engine cover provided for the embodiment of the utility model;

[0030] Figure 3 A schematic diagram of the overall structure of a lubrication assembly of an engine provided by an embodiment of the utility model;

[0031] Figure 4 A partial cross-sectional view of the oil pan portion of an engine provided by an embodiment of the utility model;

[0032] Figure 5 A partial cross-sectional view of the installation position of the crankshaft torsional vibration damper in the engine provided by the embodiment of the utility model;

[0033] Figure 6 A side view of an engine provided by an embodiment of the utility model;

[0034] Figure 7 A top view of an engine provided in an embodiment of the utility model.

[0035] Description of reference numerals:

[0036] 100. Engine cylinder block;

[0037] 110, third pipeline; 120, warm air return channel; 130, engine front cover;

[0038] 200, engine cylinder head;

[0039] 300, electronic water pump;

[0040] 310. Water inlet of electronic water pump;

[0041] 400, dual thermostat;

[0042] 410, whole vehicle circulating water inlet; 420, whole vehicle circulating water outlet;

[0043] 500, lubrication components;

[0044] 510, oil pan; 520, oil return electronic oil pump; 530, oil return pipeline; 540, external oil tank; 550, oil suction plate; 560, oil supply electronic oil pump; 570, external oil tank level sensor; 580, oil pan level sensor;

[0045] 600, crankshaft torsional vibration damper;

[0046] 700. Crankshaft. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0048] Example 1

[0049] The present application takes into account the general layout and overall structure of the engine, and comprehensively considers the engine body, cooling assembly (cooling system), lubrication assembly (lubrication system), and accessory system, improves the engine block, engine cylinder head, cooling assembly, lubrication assembly, and engine accessories, reduces the overall height and length of the engine, and makes the engine more compact and integrated.

[0050] Next, the improvements and arrangements of the engine block, engine cylinder head and cooling assembly of the present application are described:

[0051] The implementation of this embodiment discloses an engine, see Figure 1 , including an engine block 100 , an engine cylinder head 200 , an electronic water pump 300 and a dual thermostat 400 , the engine cylinder head 200 is arranged on the engine block 100 , and the electronic water pump 300 and the dual thermostat 400 are arranged side by side on the outside of one side of the engine block 100 .

[0052] It also includes an engine cooling circulation flow channel (not shown in the figure), one end of the engine cooling circulation flow channel is connected to the water outlet of the electronic water pump 300, and the other end is connected to the water inlet of the dual thermostat 400, and the water outlet of the dual thermostat 400 is connected to the water inlet of the electronic water pump 300; and the engine cooling circulation flow channel is arranged in the side wall of the engine cylinder block 100 and the side wall of the engine cylinder head 200, and when the engine cylinder head 200 is fixed on the engine cylinder block 100, the engine cooling circulation flow channel is a semi-annular flow channel.

[0053] Specifically, in the present embodiment, an engine cooling circulation channel is provided in the engine cylinder head 200 and the engine block 100, and the cooling channels and return pipes of the engine cylinder head 200 and the engine block 100 are all integrated and arranged inside the engine block 100 and the engine cylinder head 200. When cooling the return water of the engine cylinder head 200, there is no need to set up a separate pipeline outside the engine, thereby reducing the accessory pipelines of the engine, thereby avoiding the problem of the cooling return water pipeline occupying the external installation space of the engine. In addition, because the engine cooling circulation channel is entirely integrated in the engine cylinder head 200 and the engine block 100, no pipeline is arranged on the periphery or rear end of the engine, thereby reducing the size of the rear end of the engine, making the size of the engine smaller, meeting the compactness and integration improvement of the engine.

[0054] In the present application, when the engine cylinder head 200 is fixed on the engine cylinder block 100, the circulation path of the engine coolant is described: along the flow direction of the coolant, the coolant enters the engine cooling circulation channel from the water outlet of the electronic water pump 300, the coolant flows in the engine cooling circulation channel, and then flows out of the engine cylinder block 100 and flows into the water inlet of the dual thermostat 400, and then is connected with the water inlet of the electronic water pump 300 through the water outlet of the dual thermostat 400, forming a cooling cycle of the coolant, so the engine cooling circulation channel is a semi-annular channel.

[0055] Next, the engine cooling circulation flow channel is described in more detail: in the flow direction of the engine coolant, the engine cooling circulation flow channel includes a first pipeline (not shown in the figure) that enters the side wall of one side of the engine cylinder block 100 from the water outlet of the electronic water pump 300 and extends upward to the engine cylinder head 200, a second pipeline (not shown in the figure) extending in the top wall of the engine cylinder head 200 along the extension direction of the engine cylinder head 200, and a third pipeline 110 extending from the top downward in the other side wall of the engine cylinder block 100 to the water inlet of the dual thermostat 400. When the engine cylinder head 200 is fixed to the engine cylinder block 100, the outlet of the first pipeline is aligned and connected with the inlet of the second pipeline, and the outlet of the second pipeline is aligned and connected with the inlet of the third pipeline 110. The third pipeline 110 can be seen in Figure 2 It should be noted that Figure 2 In order to show the structure of the third pipeline 110 , the side wall structure of the engine block 100 is cut away.

[0056] Specifically, it can be understood that the first pipeline that enters the side wall of the engine cylinder block 100 from the water outlet of the electronic water pump 300 and extends upward to the engine cylinder head 200 refers to a cooling pipeline arranged in the engine cylinder block 100, and the coolant cools the engine cylinder block 100 when flowing through the first pipeline. The second pipeline extending in the top wall of the engine cylinder head 200 along the extension direction of the engine cylinder head 200 refers to a cooling pipeline arranged in the engine cylinder head 200, and the coolant cools the engine cylinder head 200 when flowing through the second pipeline. The third pipe 110 extending from the top downward to the water inlet of the dual thermostat 400 in the other side wall of the engine block 100 is actually a return pipe. The coolant enters the engine block 100 and the engine cylinder head 200 from the water outlet and flows along the first pipe and the second pipe to perform a cooling cycle, and then flows back to the dual thermostat 400 through the third pipe 110, forming a complete cooling circulation flow channel, and no additional return pipe is set outside the engine, so the engine is more compact and integrated.

[0057] Further, the circulation path of the engine coolant is explained: along the flow direction of the engine coolant, the engine coolant flows through the outlet of the electronic water pump 300, the first pipeline, the second pipeline, the third pipeline 110, the water inlet of the dual thermostat 400, the outlet of the dual thermostat 400, and the water inlet of the electronic water pump 300 in sequence, thereby forming a complete cooling circulation flow channel. And it can be seen that the first pipeline, the second pipeline, and the third pipeline 110 (return pipeline) included in the engine cooling circulation flow channel are all arranged inside the engine cylinder block 100 and the engine cylinder head 200, and there is no need to set up additional external pipelines for cooling circulation like traditional engines, so that the engine as a whole is more integrated and compact, and the occupied space is reduced.

[0058] The implementation method of this embodiment also discloses an engine, see Figure 2 , and further includes a warm air return channel 120, which is arranged in the other side wall of the engine block 100 at a distance from the third pipeline 110, and the warm air return channel 120 forms a hollow internal pipe in the other side wall. In addition, the warm air return channel 120 runs through the other side wall of the engine block 100, the water inlet of the warm air return channel 120 is connected to the warm air pipeline of the vehicle, and the water outlet is connected to the water inlet of the dual thermostat 400.

[0059] With this structural design, the warm air return channel 120 is also integrated into the other side wall of the engine block 100, and there is no need to separately set a warm air return pipeline outside the engine block 100, which further makes the engine more integrated and compact, reduces the overall size of the engine, makes engine installation more convenient, and reduces the engine installation requirements in the vehicle.

[0060] As can be seen from the above, in order to make the engine more compact and smaller in size, the present application first improves the structure of the engine block 100, specifically, the external cooling return pipe and the warm air return pipe are integrated into one of the side walls inside the engine block 100, and the external cooling return pipe and the warm air return pipe are eliminated without changing the volume of the engine block 100 and the cylinder head, thereby making the engine more compact and smaller in size.

[0061] Furthermore, the arrangement and improvement of other accessories in the engine cooling system are described as follows:

[0062] The electronic water pump 300 is cylindrical and fixed to the outside of the engine block 100 near the engine intake side. The water inlet 310 of the electronic water pump is coaxially connected to the water outlet of the dual thermostat 400. The dual thermostat 400 is also provided with a vehicle circulation water inlet 410 and a vehicle circulation water outlet 420 on the side away from the engine block 100. The vehicle circulation water inlet 410 and the vehicle circulation water outlet 420 are respectively connected to the cooling pipeline of the vehicle circulation; and the vehicle circulation water inlet 410 and the vehicle circulation water outlet 420 are arranged at intervals along the height direction of the engine block 100.

[0063] It can be understood that in this embodiment, the electronic water pump 300 and the dual thermostat 400 are both arranged at the position of the engine intake side, and are both set close to the engine cylinder 100, no longer occupying the rear end space of the engine, and the water inlet 310 of the electronic water pump is coaxially arranged with the water outlet of the dual thermostat 400, so that the space occupied by the electronic water pump 300 and the dual thermostat 400 is smaller. That is, the arrangement of the electronic water pump 300 and the dual thermostat 400 in this application can occupy the volume of the engine as little as possible, so that the engine as a whole is more integrated and compact, and compared with the prior art, the dual thermostat 400 is improved and arranged on the intake side, which improves the space utilization of the intake side and avoids the space occupied by the rear end of the engine. In addition, along the height direction of the engine cylinder 100, the vehicle circulation water inlet 410 and the vehicle circulation water outlet 420 are arranged at intervals and staggered, which can reserve a relatively sufficient installation space for the external oil tank 540 in the lubrication assembly 500.

[0064] Next, the specific improvements and arrangements of the lubrication assembly 500 disclosed in the present application are described:

[0065] The embodiment of the present invention also discloses an engine, further comprising a lubrication assembly 500 fixedly disposed outside the engine cylinder 100, see Figure 3 The lubrication assembly 500 includes an oil pan 510 , an oil return electronic oil pump 520 , an oil return pipeline 530 and an external oil tank 540 .

[0066] The oil pan 510 is fixedly arranged at the bottom of the engine block 100, the external oil tank 540 is located above the oil pan 510 and fixedly arranged on one side of the engine block 100, the return oil electronic oil pump 520 is fixed on one side of the engine block 100 and is located between the external oil tank 540 and the oil pan 510 in the height direction, the oil suction end of the return oil electronic oil pump 520 is connected to the oil pan 510, the oil outlet end is connected to the return oil pipeline 530, and the return oil pipeline 530 is also connected to the external oil tank 540.

[0067] It should be noted that the present application also improves the setting position and structure of the lubrication component 500, so as to make the lubrication component 500 and the engine block 100 more compact and avoid excessive space waste. Specifically, compared with the traditional oil pan 510, the oil pan 510 in the present application is set as a small oil pan, which only plays the role of returning oil collection and temporary storage transition. Therefore, the overall volume of the oil pan 510 is reduced and the height is reduced. After the lubricating oil flows back into the oil pan 510, the lubricating oil is pumped back to the external oil tank 540 for storage through the return oil electronic oil pump 520 and the return oil pipeline 530. Because the height of the oil pan 510 is reduced and the external oil tank 540 is set on one side of the height direction of the engine block 100, when it is reflected on the engine, the overall height of the engine is significantly reduced, the height size of the engine is reduced, and its overall structure is more integrated and compact.

[0068] The embodiment of the present invention also discloses an engine, when looking from the top of the oil pan 510 toward the oil pan 510, the middle of the oil pan 510 is recessed toward the side away from the engine cylinder 100, and an oil suction pan 550 is further provided in the oil pan 510, and the oil suction end of the oil suction pan 550 is toward the bottom side of the oil pan 510. Figure 4 The pipeline cross section of the oil suction plate 550 is rectangular, and the oil suction plate 550 is connected to the oil suction end of the oil return electronic oil pump 520.

[0069] Specifically, in this embodiment, the oil suction plate 550 is invertedly arranged in the oil pan 510, and the oil suction end of the oil suction plate 550 faces the bottom side of the oil pan 510, which can suck the lubricating oil returning to the oil pan 510 to the oil suction end of the oil return electronic oil pump 520, and then transport it to the external oil tank 540 through the oil return electronic oil pump 520 and the oil return pipeline 530. In addition, a solenoid valve is integrated in the oil return electronic oil pump 520 to control the amount of returned oil, so as to maintain the oil balance between the external oil tank 540 and the oil pan 510.

[0070] The implementation method of this embodiment also discloses an engine, one end of the return oil pipeline 530 is fixedly connected to the oil outlet of the return oil electronic oil pump 520, and the other end is fixedly connected and communicated with the external oil tank 540, and the connection parts of the two ends of the return oil pipeline 530 are provided with sealing rings.

[0071] Specifically, in this embodiment, the oil return pipeline 530 and the oil return electronic oil pump 520 are connected in a straight-in manner and sealed by a sealing ring, without using a flange connection, thereby reducing the space limitation of the flange connection and improving compactness. Those skilled in the art may also use threaded connection or other methods for connection, and the oil return electronic oil pump 520 can timely transport the lubricating oil in the oil pan 510 to the external oil tank 540. More specifically, the sealing ring is preferably set as an O-ring, which has a better sealing effect.

[0072] The embodiment of the utility model also discloses an engine, which also includes an electronic oil pump 560 and an oil supply pipeline. The electronic oil pump 560 is arranged on one side of the external oil tank 540 and is connected to the external oil tank 540. One end of the oil supply pipeline is fixedly connected and connected to the oil outlet of the electronic oil pump 560, and the other end is connected to the engine oil supply pipeline. The connection parts of the two ends of the oil supply pipeline are also provided with sealing rings. In addition, the electronic oil pump 560 has its own control module and has the functions of oil supply and oil return. The electronic oil pump 560 is externally fixed on the engine body.

[0073] With the above solution, the electronic oil pump 560 and the oil supply pipeline provide lubricating oil to the engine and the vehicle, and the oil supply pipeline and the oil outlet of the electronic oil pump 560 are also connected by direct plug-in and sealed by a sealing ring, which reduces the space limitation of the flange connection in the traditional connection method and improves the compactness of the connection. More specifically, the sealing ring is preferably set as an O-ring for better sealing effect.

[0074] The flow path of the lubricating oil in the entire lubrication system is as follows: the oil supply electronic oil pump 560 supplies the lubricating oil in the external oil tank 540 to the engine or the entire vehicle, and the lubricating oil circulates back to the oil pan 510, and the lubricating oil in the oil pan 510 returns to the external oil tank 540 through the oil return electronic oil pump 520 and the oil return pipeline 530, forming a circulating lubrication of the lubricating oil.

[0075] The embodiment of the utility model further discloses an engine, further comprising an external oil tank level sensor 570 and an oil pan level sensor 580, wherein the external oil tank level sensor 570 is located in the external oil tank 540, and the oil pan level sensor 580 is located in the oil pan 510. By providing the external oil tank level sensor 570 and the oil pan level sensor 580, the oil quantity status can be monitored in real time to realize closed-loop control.

[0076] In summary, this embodiment improves the oil pan 510 in the lubrication assembly 500 of the engine, and configures the traditional oil pan 510 as a small oil pan 510 plus an external oil tank 540, so that the overall height of the engine is significantly reduced, the height size of the engine is reduced, and its overall structure is more integrated and compact.

[0077] Next, the crankshaft torsional vibration damper 600 and other accessories are described:

[0078] The embodiment of this embodiment also discloses an engine, see Figure 5 , and also includes a crankshaft torsional vibration damper 600, which is arranged on the inner side of the engine front cover 130 and above the oil pan 510, and the crankshaft torsional vibration damper 600 is connected to the end of the crankshaft 700 of the engine.

[0079] By adopting the above solution, the crankshaft torsional vibration damper 600 is arranged on the inner side of the engine front cover 130, as close to the engine as possible to reduce the size of the front end of the engine. Moreover, because the present application adopts an electronic oil pump, compared with a traditional engine, there is no need to consider and set up a mechanical transmission subspace of the oil pump, thereby making the engine smaller and more integrated and compact.

[0080] In summary, this embodiment discloses an engine, see Figure 6 as well as Figure 7 The overall size of the engine is reduced mainly by improving the structure and arrangement of the engine cooling assembly, lubrication assembly 500 and crankshaft torsional vibration damper 600, making the engine more integrated and compact. Specifically, the engine cooling circulation flow channel in the cooling system is integrated into the engine cylinder head 200 and the engine cylinder block 100, and the warm air return water channel 120 is also integrated into one side wall of the engine cylinder block 100. The return pipe and warm air return pipe are not separately arranged on the periphery of the engine. The electronic water pump 300 and the dual thermostat 400 are both arranged on the engine intake side, and no longer occupy the rear end space of the engine. Through the above integrated arrangement, the engine is more integrated and compact, and does not occupy the rear end space of the engine. The lubrication assembly 500 adopts the method of oil pan 510 plus external oil tank 540 to reduce the height size of the engine. The external oil tank 540 is arranged on one side of the engine cylinder block 100 and fully utilizes the engine space, so that the height of the engine is significantly reduced. Furthermore, the peripheral accessories of the engine are electrified, such as the electronic water pump 300 and the electronic oil pump, eliminating the belt-driven accessory gear train required by the traditional engine, and using a small inertia crankshaft torsional vibration damper 600, which is arranged inside the engine front cover 130, further reducing the size of the engine and making it more integrated. And see Figure 6 as well as Figure 7 As shown in the overall schematic diagram of the engine, the present application makes the engine more integrated by significantly reducing the height and length dimensions of the engine, is more friendly to the application environment and space requirements of the engine in the whole vehicle, improves the robustness of the entire engine, and also improves the utilization rate of the surrounding space of the engine.

[0081] It should be further explained that the engine disclosed in this embodiment can be used in both traditional fuel vehicles and hybrid vehicles. Combined with the application of a hybrid transmission, it can also meet the vehicle's spatial layout requirements for a highly compact powertrain hybrid power unit.

[0082] It should be noted that, in addition to the implementation methods of the utility model described in the above-mentioned specific specific embodiments, those skilled in the art can easily understand other advantages and functions of the utility model from the contents disclosed in this specification. Although the description of the utility model will be introduced in conjunction with the preferred embodiment, this does not mean that the features of this utility model are limited to this implementation method. On the contrary, the purpose of introducing the utility model in conjunction with the implementation method is to cover other options or modifications that may be extended based on the claims of the utility model. In order to provide an in-depth understanding of the utility model, the above description contains many specific details, and the utility model can also be implemented without using these details. In addition, in order to avoid confusion or blurring the focus of the utility model, some specific details will be omitted in the description. It should be noted that, in the absence of conflict, the embodiments in the utility model and the features in the embodiments can be combined with each other.

[0083] It should be noted that in this specification, similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.

[0084] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, or are the orientations or positional relationships in which the utility model product is usually placed when in use. They are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0085] The terms “first”, “second”, etc. are only used for distinguishing descriptions and should not be understood as indicating or implying relative importance.

[0086] In the description of this embodiment, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this embodiment can be understood according to specific circumstances.

[0087] Although the present invention has been illustrated and described with reference to certain preferred embodiments of the present invention, it should be understood by those skilled in the art that the above contents are further detailed descriptions of the present invention in combination with specific embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. Those skilled in the art may make various changes in form and details, including making several simple deductions or substitutions, without departing from the spirit and scope of the present invention.

Claims

1. An engine, comprising an engine cylinder block, an engine cylinder head, an electronic water pump and a dual thermostat, wherein the engine cylinder head is arranged on the engine cylinder block, and the electronic water pump and the dual thermostat are arranged side by side on the outside of one side of the engine cylinder block; characterized in that: It also includes an engine cooling circulation flow channel, one end of which is connected to the water outlet of the electronic water pump, and the other end is connected to the water inlet of the dual thermostat, and the water outlet of the dual thermostat is connected to the water inlet of the electronic water pump; and the engine cooling circulation flow channel is arranged in the side wall of the engine cylinder block and the side wall of the engine cylinder head, and when the engine cylinder head is fixed to the engine cylinder block, the engine cooling circulation flow channel is a semi-annular flow channel.

2. The engine according to claim 1, characterized in that In the flow direction of the engine coolant, the engine cooling circulation flow channel includes a first pipeline entering the side wall of one side of the engine cylinder block from the water outlet of the electronic water pump and extending upward to the engine cylinder head, a second pipeline extending in the top wall of the engine cylinder head along the extension direction of the engine cylinder head, and a third pipeline extending from the top downward in the other side wall of the engine cylinder block to the water inlet of the dual thermostat; and When the engine cylinder head is fixed to the engine cylinder block, the outlet of the first pipeline is aligned and communicated with the inlet of the second pipeline, and the outlet of the second pipeline is aligned and communicated with the inlet of the third pipeline.

3. The engine according to claim 2, characterized in that It also includes a warm air return water channel, which is arranged in the other side wall of the engine cylinder body at a distance from the third pipeline, and the warm air return water channel forms a hollow internal pipe in the other side wall; and The warm air return water channel runs through the other side wall of the engine cylinder body, the water inlet of the warm air return water channel is communicated with the warm air pipeline of the vehicle, and the water outlet is communicated with the water inlet of the dual thermostat.

4. The engine according to claim 3, characterized in that The electronic water pump is cylindrical and fixed to the outside of the engine cylinder body near the engine intake side; The water inlet of the electronic water pump is coaxially connected to the water outlet of the dual thermostat, and the dual thermostat is further provided with a vehicle circulation water inlet and a vehicle circulation water outlet on a side away from the engine cylinder body, and the vehicle circulation water inlet and the vehicle circulation water outlet are respectively connected to the cooling pipeline of the vehicle circulation; and Along the height direction of the engine cylinder body, the whole vehicle circulating water inlet and the whole vehicle circulating water outlet are arranged at intervals.

5. The engine according to any one of claims 1 to 4, characterized in that: It also includes a lubrication assembly fixedly arranged outside the engine cylinder body, the lubrication assembly includes an oil pan, an oil return electronic oil pump, an oil return pipeline and an external oil tank; The oil pan is fixedly arranged at the bottom of the engine cylinder body, the external oil tank is located above the oil pan and fixedly arranged on one side of the engine cylinder body, the return oil electronic oil pump is fixed to the one side of the engine cylinder body and is located between the external oil tank and the oil pan in the height direction, the oil suction end of the return oil electronic oil pump is connected to the oil pan, the oil outlet end is connected to the return oil pipeline, and the return oil pipeline is also connected to the external oil tank.

6. The engine according to claim 5, characterized in that When looking from the top of the oil pan toward the oil pan, the middle of the oil pan is recessed toward the side away from the engine cylinder block, and an oil suction pan is also provided in the oil pan, with the oil suction end of the oil suction pan facing the bottom side of the oil pan; wherein The pipeline cross section of the oil suction pan is rectangular, and the oil suction pan is connected to the oil suction end of the oil return electronic oil pump.

7. The engine according to claim 6, characterized in that One end of the oil return pipeline is fixedly connected to the oil outlet of the oil return electronic oil pump, and the other end is fixedly connected to and communicated with the external oil tank; and The connecting parts of both ends of the oil return pipeline are provided with sealing rings.

8. The engine according to claim 7, characterized in that It also includes an electronic oil pump and an oil supply pipeline, wherein the electronic oil pump is arranged on one side of the external oil tank and is connected to the external oil tank; One end of the oil supply pipeline is fixedly connected and communicated with the oil outlet of the oil supply electronic oil pump, and the other end is communicated with the engine oil supply pipeline, and the connection parts of the two ends of the oil supply pipeline are also provided with sealing rings.

9. The engine according to claim 8, characterized in that It also includes an external fuel tank liquid level sensor and an oil pan liquid level sensor, wherein the external fuel tank liquid level sensor is located in the external fuel tank, and the oil pan liquid level sensor is located in the oil pan.

10. The engine according to claim 5, characterized in that It also includes a crankshaft torsional vibration damper, which is arranged on the inner side of the engine front cover and above the oil pan, and is connected to the end of the crankshaft of the engine.

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