An engine, hybrid assembly and vehicle

Abstract

The application relates to the technical field of vehicles, in particular to an engine, a hybrid assembly and a vehicle. An engine is provided, which comprises a body, an oil pan, a first pump and a second pump; the body has a first containing cavity; the oil pan has a second containing cavity; the first pump has a first inlet side and a first outlet side, the first inlet side being communicated with the first containing cavity; the second pump has a second inlet side and a second outlet side, the second inlet side being respectively communicated with the outside and the second containing cavity, and the first outlet side and the second outlet side being communicated with each other. The engine provided by the application can solve the abnormal sound problem of the engine in the initial starting period.

Description

Technical Field

[0001] This application relates to the field of vehicle technology, and more particularly to an engine, a hybrid powertrain, and a vehicle. Background Technology

[0002] The engine, as the main power unit of a car, plays a crucial role in the stable operation of the vehicle. The oil pan, as an important component of the engine, primarily stores and provides the lubricating oil needed for the engine's working cycle. Currently, the oil pan is typically located at the bottom of the engine block; the lubricating oil in the cylinder block returns to the oil pan under gravity after lubrication. Summary of the Invention

[0003] This application provides an engine and a vehicle. The engine provided by this application can effectively solve the problem of abnormal noise during the initial start-up of the engine.

[0004] To achieve the above objectives, according to a first aspect of this application, an engine is provided, comprising a body, an oil pan, a first pump, and a second pump; the body has a first receiving cavity; the oil pan has a second receiving cavity; the first pump has a first inlet side and a first outlet side, the first inlet side being connected to the first receiving cavity; the second pump has a second inlet side and a second outlet side, the second inlet side being connected to the outside and the second receiving cavity respectively, and the first outlet side and the second outlet side being connected to each other.

[0005] Optionally, it also includes a housing, which is connected to the body, and both the first pump and the second pump are mounted on the housing. The housing has a first connecting port, a second connecting port, and a third connecting port. The first connecting port (the oil suction port on the housing) is connected to the second receiving cavity, the second connecting port (the air suction port on the housing) is connected to the outside, and the third connecting port (the connecting port on the housing that connects to the inlet of the second pump) is connected to the second inlet side. The first connecting port and the third connecting port are interconnected, and the second connecting port and the third connecting port are interconnected.

[0006] Optionally, the housing is provided with an oil inlet and an air inlet, the air inlet is connected to the oil inlet, the first connecting port and the third connecting port are respectively provided on the oil inlet, and the second connecting port is provided on the air inlet.

[0007] Optionally, it also includes a valve body disposed between the second inlet side and the outside, the valve body being capable of selectively opening or closing the connection between the second inlet side and the outside.

[0008] Optionally, the valve body is a solenoid valve.

[0009] Optionally, the valve body is a mechanical valve, the valve body has a communication channel, and the valve body includes a valve core disposed within the communication channel; the valve core divides the communication channel into a first region and a second region; the first region is provided with a first valve port and a second valve port, the first valve port being adapted to communicate with the outside, and the second valve port communicating with a second inlet side; the second region is provided with a third valve port, the third valve port communicating with a first outlet side; the valve core is movable between a first position and a second position; when the valve core is in the first position, the first valve port and the second valve port are connected through the first region; when the valve core is in the second position, the first valve port and the second valve port are disconnected.

[0010] Optionally, it also includes an oil supply pump having an oil supply outlet that communicates with the first receiving cavity.

[0011] Optionally, it also includes a linkage shaft and an output shaft for outputting power outward, wherein the oil supply pump, the first pump, and the second pump are all driven by the linkage shaft, and the output shaft is connected to the linkage shaft for transmission.

[0012] Optionally, the valve body is a mechanical valve, the valve body has a communication channel, and the valve body includes a valve core disposed within the communication channel; the valve core divides the communication channel into a first region and a second region; the first region is provided with a first valve port and a second valve port, the first valve port being adapted to communicate with the outside, and the second valve port communicating with a second inlet side; the second region is provided with a third valve port, the third valve port communicating with the oil supply outlet; the valve core is movable between a first position and a second position; when the valve core is in the first position, the first valve port and the second valve port are connected through the first region; when the valve core is in the second position, the first valve port and the second valve port are disconnected.

[0013] Optionally, the second inlet side includes a low-pressure chamber, and the second outlet side includes a high-pressure chamber; an air intake passage is formed on the housing, one end of the air intake passage forms the second communication port, and the other end of the air intake passage communicates with the low-pressure chamber.

[0014] Optionally, there are multiple second pumps, multiple first connection ports and multiple third connection ports, with each of the multiple second pumps corresponding to one of the multiple third connection ports, and each of the third connection ports connected to at least one of the first connection ports.

[0015] Optionally, the second connection port is connected to a plurality of the third connection ports.

[0016] Optionally, in each of the second pumps: the second inlet side includes a low-pressure chamber, and the second outlet side includes a high-pressure chamber; an air intake passage is formed on the housing, the second connecting port is formed on the air intake passage, and multiple air inlets are provided on the air intake passage, with the multiple air inlets respectively connected to the low-pressure chamber of each of the second pumps.

[0017] Optionally, the housing has a plurality of oil inlet channels, one end of each oil inlet channel forming the first connecting port, and the other end of each oil inlet channel forming the third connecting port.

[0018] Optionally, the housing is disposed within the oil pan.

[0019] Optionally, the housing has a bottom surface and a side surface, the bottom surface facing the bottom of the oil pan, the side surface adjacent to the bottom surface, the first communication port being disposed on the bottom surface of the housing, and the third communication port being disposed on the side surface of the housing.

[0020] Optionally, it also includes an oil container, which is connected to the first outlet side and the second outlet side respectively.

[0021] Optionally, it also includes a manifold pipe connected to the oil can inlet, wherein both the first outlet side and the second outlet side are connected to the manifold pipe, and the first outlet side and the second outlet side are interconnected through the manifold pipe.

[0022] According to a second aspect of this application, a hybrid powertrain is provided, the hybrid powertrain including an engine as described in the first aspect.

[0023] According to a third aspect of this application, a vehicle is provided, including an engine as described in the first aspect, or including a hybrid powertrain as described in the second aspect.

[0024] The beneficial effects of this application are:

[0025] An engine is provided in which, when the engine is running, a first pump draws oil from a first receiving chamber, and a second pump draws oil from a second receiving chamber. Since the first and second outlets are connected, oil from different regions will mix. Initially, when the engine starts running, the first receiving chamber is empty of oil, while the second receiving chamber contains some residual oil. Therefore, the first pump draws air, and the second pump draws oil, causing oil and air to mix and produce a loud, abnormal noise. To address this, the second inlet of this application can be connected to the outside. When the engine starts running, the second inlet is connected to the outside, and the second pump also draws in air. The air mixes with the air, preventing a loud noise and avoiding oil-air mixing, thus solving the problem of abnormal noise caused by oil-air mixing during engine startup.

[0026] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] To gain a more complete understanding of this application and its beneficial effects, the following description will be provided in conjunction with the accompanying drawings, wherein the same reference numerals in the following description denote the same parts.

[0029] Figure 1 This is a schematic diagram showing the connection relationship between the various components of an engine according to some embodiments provided in this application.

[0030] Figure 2 This is a schematic diagram showing the connection relationship between the various components of an engine according to some embodiments provided in this application.

[0031] Figure 3 This is a schematic diagram showing the connection relationship between the various components of an engine according to some embodiments provided in this application.

[0032] Figure 4 This is a schematic diagram showing the connection relationship between the various components of an engine according to some embodiments provided in this application.

[0033] Figure 5 This is a side view of the engine casing of an engine according to some embodiments provided in this application.

[0034] Figure 6 This is a top view of the engine casing of an engine provided in some embodiments of this application.

[0035] Figure 7 This is a bottom view of the engine casing of an engine provided in some embodiments of this application.

[0036] Figure 8 This is a partial schematic diagram of the side view of the housing of an engine provided in some embodiments of this application.

[0037] Figure 9 This application provides a valve body structure diagram of the engine housing according to some embodiments.

[0038] Figure 10 This is an overall schematic diagram of an engine provided in some embodiments of this application.

[0039] Figure 11 This is an overall schematic diagram of an engine provided in some embodiments of this application.

[0040] Figure 12 This is a structural diagram of the air intake duct of the engine housing according to some embodiments provided in this application.

[0041] Figure 13 This is a structural diagram of the air intake duct of the engine housing according to some embodiments provided in this application.

[0042] Explanation of reference numerals in the attached figures:

[0043] 100. Engine; 110. Engine block; 111. First receiving cavity; 112. Cylinder head; 113. Cylinder block; 120. Oil pan; 121. Second receiving cavity; 130. First pump; 131. First inlet side; 132. First outlet side; 140. Second pump; 141. Second inlet side; 1411. Low-pressure cavity; 142. Second outlet side; 1421. High-pressure cavity; 150. Engine housing; 151. Oil inlet passage; 1511. First connecting port; 1512. Second connecting port 152. Air intake port; 1521. Third connecting port; 153. Bottom surface; 154. Side surface; 160. External environment; 170. Valve body; 171. Connecting passage; 1711. First zone; 1712. Second zone; 172. First valve port; 173. Second valve port; 174. Third valve port; 180. Fuel pump; 181. Fuel outlet; 182. Fuel pipe; 183. Fuel inlet; 190. Linkage shaft; 200. Oil reservoir; 210. Merging pipe. Detailed Implementation

[0044] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0045] In the description of this application, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Furthermore, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, unless otherwise stated, "a plurality of" means two or more.

[0046] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] The following is for reference. Figures 1 to 13 This application describes an engine 100 according to an embodiment of the present application. The engine 100 includes a body 110, an oil pan 120, a first pump 130, and a second pump 140. The body 110 has a first receiving cavity 111, the oil pan 120 has a second receiving cavity 121, the first pump 130 has a first inlet side 131 and a first outlet side 132, the first inlet side 131 being connected to the first receiving cavity 111; the second pump 140 has a second inlet side 141 and a second outlet side 142, the second inlet side 141 being connected to the second receiving cavity 121, and the first outlet side 132 and the second outlet side 142 being interconnected.

[0048] When the engine 100 is operating normally, the first receiving cavity 111 receives engine oil and lubricates the components to be lubricated housed within it. These components can be moving parts of the engine 100, such as the camshaft or crankshaft. The first receiving cavity 111 can be a camshaft cavity accommodating the camshaft or a crankshaft cavity accommodating the crankshaft. The first pump 130 actively draws a portion of the engine oil from the first receiving cavity 111 so that it can participate in the next cycle; while another portion of the engine oil in the first receiving cavity 111 will flow into the second receiving cavity 121 of the oil pan 120 under the influence of gravity. The second pump 140 actively draws the engine oil from the second receiving cavity 121 so that it can participate in the next cycle.

[0049] When engine 100 is used in vehicles and other equipment, it operates in a start-stop mode, meaning it can switch between a working state and a stopped state. Furthermore, when engine 100 is used in hybrid vehicles, its start-stop frequency is significantly higher than when engine 100 is used in gasoline vehicles.

[0050] When the engine 100 enters the shutdown state, the first pump 130 and the second pump 140 stop working. At this time, the oil in the first receiving chamber 111 slowly flows back to the second receiving chamber 121 of the oil pan 120 under the action of gravity. There is basically no oil residue in the first receiving chamber 111, while the second receiving chamber 121 contains the oil that has flowed back from the first receiving chamber 111.

[0051] At this time, if the engine 100 is started directly, and the engine 100 enters the working state, in the initial stage when the engine 100 just enters the working state, that is, when the first receiving cavity 111 has not yet received the oil for lubricating the parts to be lubricated, since there is no oil in the first receiving cavity 111, while the second receiving cavity 121 contains the oil that flowed back during the shutdown state, the first pump 130 will draw air from the first receiving cavity 111, and the second pump 140 will draw oil from the second receiving cavity 121. As a result, since the first outlet side 132 and the second outlet side 142 are connected, the oil and air will mix. The mixing of the two different forms of media will cause severe abnormal noise and affect the NVH performance of the engine 100.

[0052] Since the engine 100 has a high start-stop frequency when used in a hybrid vehicle, the NVH of the hybrid vehicle will be significantly affected.

[0053] To address the abnormal noise issue during the initial startup of the engine 100, this embodiment of the application configures the second inlet side 141 to be connected to the outside environment 160.

[0054] To address the issue of abnormal noise during the initial startup of engine 100, this application provides an engine 100100. The second inlet side 141 of the engine 100 is configured to connect to the outside environment 160. In the initial stage when engine 100 is just starting to operate, the first pump 130 draws air from the first receiving chamber 111, and the second pump 140 draws air from the second receiving chamber 121. The air mixing does not produce abnormal noise, thus avoiding the mixing of oil and air and solving the problem of abnormal noise caused by the mixing of oil and air during the initial startup of engine 100.

[0055] It should be noted that the time from when the engine 100 enters the working state to when the first pump 130 can draw oil is generally short, typically 5-60 seconds, with most engines 100 taking 10-20 seconds. The specific time varies depending on the oil supply capacity into the first receiving chamber 111. For example, the greater the power of the oil supply pump 180 that pumps oil into the first receiving chamber 111, the shorter the time from when the engine 100 enters the working state to when the first pump 130 can draw oil.

[0056] It should be noted that after the oil is received in the first receiving cavity 111, the oil in the first receiving cavity 111 cannot be immediately drawn by the first pump 130. Only when the oil in the first receiving cavity 111 is above a certain amount can the first pump 130 draw the oil in the first receiving cavity 111. At this time, some of the oil in the first receiving cavity 111 can flow to the second receiving cavity 121 of the oil pan 120 under the action of gravity. Therefore, when the first pump 130 can draw oil, the second pump 140 can also draw oil. The first pump 130 and the second pump 140 can draw the same medium and mix at basically the same time, and the abnormal noise problem of the engine 100 is basically solved.

[0057] It should be noted that, in this embodiment, "external environment 160" refers to the environment in which the engine 100 is located. For example, when the engine 100 is located in the front compartment of a car, then external environment 160 refers to the front compartment of the car. The second inlet side 141 is connected to external environment 160, which can be a direct connection or an indirect connection. For example, when the second pump 140 is located in the oil pan 120, the second inlet side 141 can connect to the area in the second receiving cavity 121 that cannot be submerged by engine oil. The second inlet side 141 is indirectly connected to external environment 160 through this area, and the second pump 140 draws air from external environment 160 through the second inlet side 141.

[0058] In some implementations, such as Figures 1 to 8As shown, it also includes a housing 150, which is connected to the body 110. The first pump 130 and the second pump 140 are both mounted on the housing 150. The housing 150 has a first connecting port 1511, a second connecting port 1512 and a third connecting port 1521. The first connecting port 1511 is connected to the second receiving cavity 121, the second connecting port 1512 is connected to the outside 160, and the third connecting port 1521 is connected to the second inlet side 141. The first connecting port 1511 and the third connecting port 1521 are interconnected, and the second connecting port 1512 and the third connecting port 1521 are interconnected.

[0059] During operation, when the second pump 140 needs to draw in air, the second connecting port 1512 and the third connecting port 1521 are connected, allowing air to enter the housing 150 through the second connecting port 1512 and then enter the second inlet side 141 through the third connecting port 1521. When the second pump 140 needs to draw in engine oil from the second receiving cavity 121, the second connecting port 1512 and the third connecting port 1521 are disconnected, allowing engine oil to enter the housing 150 through the first connecting port 1511 and then enter the second inlet side 141 through the third connecting port 1521.

[0060] In this embodiment, a housing 150 is provided for the installation of the first pump 130 and the second pump 140. It is also convenient to provide a first communication port 1511, a second communication port 1512 and a third communication port 1521 on the housing 150 so that the second inlet side 141 can be connected to the outside 160 and the second receiving cavity 121 respectively.

[0061] Specifically, in some embodiments, the first pump 130 and the second pump 140 are installed inside the housing 150 to improve integration.

[0062] In some implementations, such as Figures 1 to 13 As shown, the oil pan 120 is located below the cylinder block 113 in the direction of gravity, and the cylinder head 112 can be located on the side of the cylinder block 113 away from the oil pan 120, that is, the cylinder head 112, cylinder block 113, and oil pan 120 are arranged sequentially in the vertical direction; the cylinder head 112 can also be located in the horizontal direction of the cylinder block 113, with the horizontal direction perpendicular to the vertical direction. Both the cylinder block 113 and the cylinder head 112 are provided with receiving cavities. The oil in the receiving cavity on the cylinder block 113 can flow back to the oil pan 120 under the action of gravity. The first pump 130 is used to draw oil from the receiving cavity on the cylinder head 112.

[0063] Furthermore, in some embodiments, the housing 150 is installed within the oil pan 120 to improve the integration of the engine 100; therefore, the housing 150 is not shown in the accompanying drawings.

[0064] In some implementations, such as Figures 1 to 8As shown, the housing 150 is provided with an oil inlet 151 and an air inlet 152. The air inlet 152 is connected to the oil inlet 151. The first connecting port 1511 and the third connecting port 1521 are respectively provided on the oil inlet 151, and the second connecting port 1512 is provided on the air inlet 152.

[0065] In this embodiment, by setting relatively independent oil inlet 151 and air inlet 152, it is convenient to set the first connecting port 1511, the second connecting port 1512 and the third connecting port 1521.

[0066] Specifically, the oil inlet 151 and the air inlet 152 can be formed by drilling.

[0067] In some implementations, such as Figures 1 to 4 ,as well as Figure 9 As shown, it also includes a valve body 170, which is disposed between the second inlet side 141 and the outside 160. The valve body 170 can selectively open or close the connection between the second inlet side 141 and the outside 160.

[0068] In this embodiment, in order to control the second inlet side 141 to be connected to the outside 160 when needed and not connected to the outside 160 when not needed, a valve body 170 is provided between the second inlet side 141 and the outside 160 so that the second inlet side 141 can change the connection relationship according to the operating conditions of the engine 100.

[0069] Specifically, in some implementations, such as Figures 1 to 4 As shown, the valve body 170 is disposed on the intake passage 152, and the valve body 170 can selectively open or close the intake passage 152.

[0070] In some embodiments, the valve body 170 may be a solenoid valve. Solenoid valves have a simple structure, are easy to control, and respond quickly, enabling them to quickly open or close the air intake 152.

[0071] In some implementations, such as Figures 1 to 2 ,as well as Figure 8As shown, the valve body 170 is a mechanical valve with a communication channel 171. The valve body 170 includes a valve core disposed within the communication channel 171. The valve core divides the communication channel 171 into a first region 1711 and a second region 1712. The first region 1711 is provided with a first valve port 172 and a second valve port 173. The first valve port 172 is adapted to communicate with the outside environment 160, and the second valve port 173 is connected to the second inlet side 141. The second region 1712 is provided with a third valve port 174, which is connected to the first outlet side 132. The valve core is movable between a first position and a second position. When the valve core is in the first position, the first valve port 172 and the second valve port 173 are connected through the first region 1711. When the valve core is in the second position, the first valve port 172 and the second valve port 173 are disconnected.

[0072] When the engine 100 enters the initial working state, the valve core is in the first position, the first valve port 172 and the second valve port 173 are connected, and air can enter the first region 1711 through the first valve port 172 and flow to the first inlet side 131 through the second valve port 173, so that the first pump 130 can draw air; when the first pump 130 can draw oil from the first receiving cavity 111, the first outlet side 132 is filled with oil, and the oil enters the second region 1712 through the third valve port 174, pushing the valve core to switch from the first position to the second position, so that the first valve port 172 and the second valve port 173 are disconnected, thereby the second pump 140 can draw oil from the second receiving cavity 121.

[0073] In this embodiment, the connection between the first inlet side 131 and the outside 160 is automatically adjusted by a mechanical valve, which is less costly and does not require additional control strategies.

[0074] Specifically, in some embodiments, a mechanical valve is installed on the air intake duct 152, and the first valve port 172 is connected to the outside 160 through the second connecting port 1512. The second valve port 173 can be configured to be connected to the oil inlet duct 151, so that air enters the second inlet side 141 after passing through the oil inlet duct 151. Alternatively, the second valve port 173 can be directly connected to the second inlet side 141, so that air enters the second inlet side 141 directly.

[0075] Figure 1 and Figure 3 The diagram illustrates the state when the mechanical valve opens the intake passage 152. Figure 2 and Figure 4 The diagram illustrates the state when the mechanical valve closes the intake manifold 152.

[0076] In some implementations, such as Figures 1 to 4As shown, in order to supply oil to the first receiving cavity 111 and ensure that the oil can circulate normally, the engine 100 also includes an oil supply pump 180, which has an oil supply outlet 181 that is connected to the first receiving cavity 111.

[0077] In some embodiments, a linkage shaft 190 and an output shaft for outputting power are also included. The oil supply pump 180, the first pump 130 and the second pump 140 are all driven by the linkage shaft 190, and the output shaft is connected to the linkage shaft 190 in a transmission manner.

[0078] Because the start and stop of the output shaft are synchronized with the engine 100, and the first pump 130 and the second pump 140 are driven by the output shaft respectively, the start and stop of the first pump 130 and the second pump 140 are synchronized with the engine 100. The first pump 130 and the second pump 140 operate synchronously and are powered by the engine 100, eliminating the need for an additional power source, thus making the structure more streamlined and reliable.

[0079] Because the starting and stopping of the first pump 130 and the second pump 140 are synchronized with the engine 100, it is impossible to control the operation of the first pump 130 and the second pump 140 independently. Therefore, it is easier for oil-air mixing to occur, resulting in abnormal noise. Therefore, this application sets the second inlet to be able to connect to the outside environment 160 to solve the problem of abnormal noise.

[0080] Specifically, in some embodiments, the output shaft is connected to the linkage shaft 190 for transmission. The linkage shaft 190 is respectively provided with a first pump 130 and a second pump 140. When the linkage shaft 190 rotates, it drives the first pump 130 and the second pump 140 to work.

[0081] In some implementations, such as Figure 3 , Figure 4 as well as Figure 9 As shown, the valve body 170 is a mechanical valve with a communication channel 171. The valve body 170 includes a valve core disposed within the communication channel 171. The valve core divides the communication channel 171 into a first region 1711 and a second region 1712. The first region 1711 is provided with a first valve port 172 and a second valve port 173. The first valve port 172 is connected to a second communication port 1512, and the second valve port 173 is connected to an oil inlet passage 151. The second region 1712 is provided with a third valve port 174, which is connected to an oil supply outlet 181. The valve core can move to a first position or a second position under the action of the pressure difference between the first region 1711 and the second region 1712. When the valve core is in the first position, the first valve port 172 and the second valve port 173 are connected through the first region 1711. When the valve core is in the second position, the first valve port 172 and the second valve port 173 are disconnected.

[0082] The mechanical valve in this embodiment works in a manner similar to the mechanical valve in the above embodiment. The difference is that when the oil supply pump 180 pumps oil into the first receiving chamber 111, the oil supply outlet 181 is filled with oil. The oil enters the second region 1712 through the third valve port 174, pushing the valve core to switch from the first position to the second position, so that the first valve port 172 and the second valve port 173 are disconnected. Thus, the second pump 140 can draw oil from the second receiving chamber 121.

[0083] Compared to the mechanical valve in which the third valve port 174 is connected to the first outlet side 132, the mechanical valve in this embodiment has a higher pressure in the second region 1712, which can ensure that the valve core switches from the first position to the second position.

[0084] Furthermore, since the oil supply outlet 181 of the oil supply pump 180 can be filled with oil at the initial stage of engine 100 operation, while the first receiving chamber 111 can only receive oil after the oil supply outlet 181 is filled with oil, it is possible that after the valve body 170 is closed, the oil level in the first receiving chamber 111 is insufficient, and the first pump 130 will still be drawing in air. To avoid this situation, it is necessary to appropriately extend the time for oil to flow from the oil supply outlet 181 to the second region 1712 to ensure that the first pump 130 and the second pump 140 can draw in oil synchronously.

[0085] Based on this, in some embodiments, the oil supply outlet 181 is connected to the first receiving cavity 111 via an oil supply pipe 182, and the third valve port 174 is connected to the side of the oil supply pipe 182 near the first receiving cavity 111. For example, the third valve port 174 is located at approximately two-thirds of the oil supply pipe 182. Thus, in this embodiment, the time for the valve core to switch from the first position to the second position can be appropriately delayed to ensure that the first pump 130 and the second pump 140 can synchronously draw oil.

[0086] In some implementations, such as Figures 1 to 13 As shown, the second inlet side 141 includes a low-pressure chamber 1411, and the second outlet side 142 includes a high-pressure chamber 1421; an air intake duct 152 is formed on the housing 150, one end of the air intake duct 152 forms the second communication port 1512, and the other end of the air intake duct 152 is connected to the low-pressure chamber 1411.

[0087] In this embodiment, the outside air 160 is directly connected to the low-pressure chamber 1411, which shortens the air flow path and improves the integration of the engine 100.

[0088] It should be noted that, in this embodiment, the high-pressure chamber 1421 and the low-pressure chamber 1411 refer to the fact that the pressure in the high-pressure chamber 1421 is greater than the pressure in the low-pressure chamber 1411. Specifically, the area connected to the inlet of the second pump 140 is the low-pressure chamber 1411, and the area connected to the outlet of the second pump 140 is the high-pressure chamber 1421. When the second pump 140 is working, it draws in engine oil into the low-pressure chamber 1411. After being pumped, the oil pressure increases and enters the high-pressure chamber 1421 and is discharged from the second pump 140.

[0089] In some implementations, such as Figures 1 to 13 As shown, in order to ensure that the second pump 140 can draw oil from the second receiving cavity 121 from multiple positions and to ensure that no oil remains in the second receiving cavity 121, there are multiple second pumps 140, multiple first connecting ports 1511 and multiple third connecting ports 1521, and multiple second pumps 140 correspond one-to-one with multiple third connecting ports 1521, and each third connecting port 1521 is connected to at least one first connecting port 1511.

[0090] In some implementations, such as Figures 1 to 13 As shown, the second connection port 1512 is connected to a plurality of third connection ports 1521 respectively, so as to draw oil from multiple positions by a second pump 140.

[0091] In some implementations, such as Figure 12 and Figure 13 As shown, in each of the second pumps 140: the second inlet side 141 includes a low-pressure chamber 1411, and the second outlet side 142 includes a high-pressure chamber 1421; an air inlet 152 is formed on the housing 150, and a second connecting port 1512 is formed on the air inlet 152. The air inlet 152 is provided with a plurality of air inlets, and the plurality of air inlets are respectively connected to the low-pressure chamber 1411 of each of the second pumps 140.

[0092] In this embodiment, the air intake duct 152 is connected to the low-pressure chamber 1411 in each of the second pumps 140 to ensure that each of the second pumps 140 can draw in air from the outside 160.

[0093] Specifically, as shown in the figure Figure 12 and Figure 13 As shown, in some embodiments, there are two second pumps 140, which are spaced apart along the left-right direction of the engine 100. The left-right arrangement of the second pumps 140 occupies less space in the Z-direction height of the engine 100. Furthermore, in some embodiments, the second outlet sides 142 of the two second pumps 140 are connected, that is, the high-pressure chambers 1421 of the two second pumps 140 are connected.

[0094] In some implementations, such as Figure 7As shown, a plurality of oil inlet channels 151 are formed on the housing 150. One end of each oil inlet channel 151 forms a first connecting port 1511, and the other end of each oil inlet channel 151 forms a third connecting port 1521, so as to draw oil from multiple positions in the second receiving cavity 121.

[0095] In some embodiments, the housing 150 is disposed within the oil pan 120 to improve the integration of the engine 100.

[0096] In some implementations, such as Figure 8 As shown, the housing 150 has a bottom surface 153 and a side surface 154. The bottom surface 153 faces the bottom of the oil pan 120, and the side surface 154 is adjacent to the bottom surface 153. A first connecting port 1511 is provided on the bottom surface 153 of the housing 150, and a third connecting port 1521 is provided on the side surface 154 of the housing 150.

[0097] In this embodiment, when the oil level in the second receiving cavity 121 is low, that is, when the engine 100 enters the initial working state, the third connecting port 1521 is not submerged by oil. The second pump 140 can draw air from the oil pan 120 through the third connecting port 1521 to indirectly draw air from the outside 160.

[0098] After the engine 100 has been in operation for a period of time, the first pump 130 can draw oil. The position of the third connecting port 1521 is configured such that when the first pump 130 can draw oil, the oil level in the second receiving chamber 121 submerges the third connecting port 1521, so that the second pump 140 can draw oil synchronously.

[0099] This embodiment has a simple structure, which is simpler than the scheme of setting valve body 170, and does not require setting control strategy, and is also inexpensive.

[0100] In some implementations, such as Figures 1 to 4 As shown, it also includes an oil container 200, which is connected to the first outlet side 132 and the second outlet side 142 respectively.

[0101] In this embodiment, the oil can 200 stores the engine oil, so the oil pan 120 no longer needs to have the function of storing engine oil. The oil pan 120 does not need to occupy much Z-axis space, which is conducive to lowering the center of gravity of the whole vehicle, thereby enhancing the driving stability of the vehicle. At the same time, it can alleviate the problem of limited Z-axis space design of the vehicle.

[0102] In some implementations, such as Figures 1 to 4As shown, it also includes a manifold pipe 210 connected to the inlet of the oil container 200. The first outlet side 132 and the second outlet side 142 are both connected to the manifold pipe 210, and the first outlet side 132 and the second outlet side 142 are interconnected through the manifold pipe 210.

[0103] In some implementations, such as Figures 1 to 4 As shown, the oil supply inlet 183 of the oil supply pump 180 is connected to the oil reservoir 200 to pump the oil in the oil reservoir 200 to the first receiving chamber 111, thereby realizing the circulation of engine oil.

[0104] According to a second aspect of this application, a hybrid powertrain is provided, which includes the engine 100 as in the first aspect, or includes all the beneficial effects of the engine 100 as in the second aspect, as will not be elaborated here.

[0105] According to a third aspect of this application, a vehicle is provided that includes the engine 100 of the first aspect, or includes all the beneficial effects of the hybrid powertrain of the second aspect, which will not be elaborated further herein.

[0106] The vehicle may be a gasoline vehicle, a plug-in hybrid vehicle, or a new energy vehicle, etc., and this application does not make any specific restrictions.

[0107] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0108] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0109] The above are merely preferred embodiments of this application and are not intended to limit this application in any way. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this application without departing from the scope of the technical solution of this application shall still fall within the scope of the technical solution of this application.

Claims

1. An engine, characterized in that, include: The body has a first receiving cavity; An oil pan, the oil pan having a second receiving cavity; A first pump, the first pump having a first inlet side and a first outlet side, the first inlet side communicating with the first receiving cavity; and The second pump has a second inlet side and a second outlet side, the second inlet side being connected to the outside and the second receiving cavity respectively, and the first outlet side and the second outlet side being connected to each other.

2. The engine according to claim 1, characterized in that, It also includes a housing, which is connected to the body, and both the first pump and the second pump are mounted on the housing; The housing has a first connection port, a second connection port, and a third connection port. The first connection port is connected to the second receiving cavity, the second connection port is connected to the outside, and the third connection port is connected to the second inlet side. The first connection port and the third connection port are interconnected, as are the second connection port and the third connection port.

3. The engine according to claim 2, characterized in that, The housing is provided with an oil inlet and an air inlet. The air inlet is connected to the oil inlet. The first connecting port and the third connecting port are respectively provided on the oil inlet, and the second connecting port is provided on the air inlet.

4. The engine according to claim 1, characterized in that, It also includes a valve body, which is disposed between the second inlet side and the outside, and the valve body is capable of selectively opening or closing the connection between the second inlet side and the outside.

5. The engine according to claim 4, characterized in that, The valve body is a solenoid valve.

6. The engine according to claim 4, characterized in that, The valve body is a mechanical valve, the valve body has a communication channel, and the valve body includes a valve core disposed in the communication channel; the valve core divides the communication channel into a first region and a second region. The first area is provided with a first valve port and a second valve port. The first valve port is adapted to communicate with the outside, and the second valve port is connected to the second inlet side. The second area is provided with a third valve port, and the third valve port is connected to the first outlet side. The valve core is movable between a first position and a second position; When the valve core is in the first position, the first valve port and the second valve port are connected through the first area; when the valve core is in the second position, the first valve port and the second valve port are disconnected.

7. The engine according to claim 4, characterized in that, It also includes an oil supply pump, which has an oil supply outlet that is connected to the first receiving cavity.

8. The engine according to claim 7, characterized in that, It also includes a linkage shaft and an output shaft for outputting power outward. The oil supply pump, the first pump, and the second pump are all driven by the linkage shaft, and the output shaft is connected to the linkage shaft for transmission.

9. The engine according to claim 8, characterized in that, The valve body is a mechanical valve, the valve body has a communication channel, and the valve body includes a valve core disposed in the communication channel; the valve core divides the communication channel into a first region and a second region. The first area is provided with a first valve port and a second valve port. The first valve port is adapted to communicate with the outside, and the second valve port is connected to the second inlet side. The second area is provided with a third valve port, which is connected to the oil supply outlet. The valve core is movable between a first position and a second position; When the valve core is in the first position, the first valve port and the second valve port are connected through the first area; when the valve core is in the second position, the first valve port and the second valve port are disconnected.

10. The engine according to claim 2, characterized in that, The second inlet side includes a low-pressure chamber, and the second outlet side includes a high-pressure chamber; an air intake is formed on the housing, one end of the air intake forms the second communication port, and the other end of the air intake is connected to the low-pressure chamber.

11. The engine according to claim 2, characterized in that, There are multiple second pumps, multiple first connection ports and multiple third connection ports, and multiple second pumps correspond one-to-one with multiple third connection ports. Each third connection port is connected to at least one first connection port.

12. The engine according to claim 11, characterized in that, The second connection port is connected to multiple third connection ports respectively.

13. The engine according to claim 12, characterized in that, In each of the second pumps: the second inlet side includes a low-pressure chamber, and the second outlet side includes a high-pressure chamber; An air intake channel is formed on the housing, and a second connecting port is formed on the air intake channel. Multiple air inlets are provided on the air intake channel, and the multiple air inlets are respectively connected to the low-pressure chamber of each of the second pumps.

14. The engine according to claim 11, characterized in that, The housing has multiple oil inlet channels, one end of each oil inlet channel forms the first connecting port, and the other end of each oil inlet channel forms the third connecting port.

15. The engine according to claim 3, characterized in that, The housing is located inside the oil pan.

16. The engine according to claim 15, characterized in that, The housing has a bottom surface and a side surface, the bottom surface facing the bottom of the oil pan, the side surface adjacent to the bottom surface, the first communication port being disposed on the bottom surface of the housing, and the third communication port being disposed on the side surface of the housing.

17. The engine according to claim 1, characterized in that, It also includes an oil container, which is connected to the first outlet side and the second outlet side respectively.

18. The engine according to claim 17, characterized in that, It also includes a manifold pipe connected to the oil can inlet, and both the first outlet side and the second outlet side are connected to the manifold pipe, and the first outlet side and the second outlet side are connected to each other through the manifold pipe.

19. A hybrid powertrain, characterized in that, Includes the engine as described in any one of claims 1 to 18.

20. A vehicle, characterized in that, Includes the engine as described in any one of claims 1 to 18 or the hybrid powertrain as described in claim 19.

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