Engine assembly and vehicle

Abstract

The embodiment of the invention provides an engine assembly and a vehicle. The engine assembly comprises a first oil pump, a second oil pump, an engine, an oil inlet channel and an oil outlet channel, wherein the oil inlet channel and the oil outlet channel are connected with the engine. Wherein the first oil pump is connected with the oil inlet channel and is suitable for pumping oil into the engine; the second oil pump is connected with the oil outlet channel and is suitable for pumping oil out of the engine; the power P2 of the second oil pump is larger than or equal to the power P1 of the first oil pump. The phenomenon that internal parts of the engine are damaged due to dry grinding can be avoided.

Description

Technical Field

[0001] This invention relates to the field of vehicle technology, and in particular to an engine assembly and a vehicle. Background Technology

[0002] In related technologies, a first oil pump draws engine oil from the oil pan into the engine, while a second oil pump draws engine oil back into the oil pan, allowing the oil to circulate in and out of the engine. However, under certain pitching and tilting conditions, the second oil pump may experience dry suction, resulting in insufficient oil in the oil pan. The first oil pump then cannot continue drawing oil into the engine, leading to a lack of lubrication and causing dry friction damage to engine components. Summary of the Invention

[0003] In view of the above problems, embodiments of the present invention are proposed to provide an engine assembly and vehicle that overcomes or at least partially solves the above problems.

[0004] To address the aforementioned problems, embodiments of the present invention disclose an engine assembly, comprising: a first oil pump, a second oil pump, an engine, and an oil inlet passage and an oil outlet passage respectively connected to the engine; wherein...

[0005] The first oil pump is connected to the oil inlet channel and is adapted to pump oil into the engine;

[0006] The second oil pump is connected to the oil outlet channel and is adapted to draw oil out of the engine;

[0007] The power P2 of the second oil pump is greater than or equal to the power P1 of the first oil pump.

[0008] Optionally, the engine has multiple oil outlet areas, and the second oil pump is connected to each of the multiple oil outlet areas through the oil outlet channel.

[0009] Optionally, the number of oil outlet areas is A, and when the engine assembly is tilted, the number of oil outlet areas that can be pumped by the second oil pump is B, and P1 and P2 satisfy:

[0010]

[0011] Alternatively, P1 and P2 satisfy:

[0012]

[0013] Optionally, the plurality of oil outlet areas include a first oil outlet area and a second oil outlet area spaced apart along a first direction, and a third oil outlet area and a fourth oil outlet area spaced apart along a first direction;

[0014] The first oil outlet area and the third oil outlet area are spaced apart along the second direction, and the second oil outlet area and the fourth oil outlet area are spaced apart along the second direction, the second direction intersecting the first direction.

[0015] Alternatively, P2 = K1 * P1, 2 ≤ K1 ≤ 3.

[0016] Optionally, the engine assembly further includes a first drive unit, which is connected to the first oil pump and the second oil pump respectively, and is adapted to simultaneously activate the first oil pump and the second oil pump.

[0017] Optionally, the engine assembly has a first operating condition, a second operating condition, and a third operating condition;

[0018] Under the first working condition, P2 = K2 * P1, 1 ≤ K2 ≤ 2;

[0019] Under the second operating condition, P2 = K3 * P1, 1.5 ≤ K3 ≤ 2.5;

[0020] Under the third operating condition, P2 = K4 * P1, 2 ≤ K4 ≤ 3.

[0021] Optionally, the vehicle further includes a controller, a second drive unit, and a third drive unit;

[0022] The second drive unit is connected to the controller and the first oil pump respectively, and the controller is adapted to start the first oil pump through the second drive unit;

[0023] The third drive unit is connected to the controller and the second oil pump respectively. In the first operating condition, the controller is adapted to adjust the second oil pump to switch to a first power through the third drive unit. In the second operating condition, the controller is adapted to adjust the second oil pump to switch to a second power through the third drive unit. In the third operating condition, the controller is adapted to adjust the second oil pump to switch to a third power through the third drive unit.

[0024] Optionally, the engine includes an oil pan connected to the oil inlet channel, the first oil outlet region includes a first oil outlet portion disposed on the oil pan, the second oil outlet region includes a second oil outlet portion disposed on the oil pan, the third oil outlet region includes a third oil outlet portion disposed on the oil pan, and the fourth oil outlet region includes a fourth oil outlet portion disposed on the oil pan.

[0025] The first oil outlet and the second oil outlet are spaced apart along the first direction, the third oil outlet and the fourth oil outlet are spaced apart along the first direction, the first oil outlet and the third oil outlet are spaced apart along the second direction, and the second oil outlet and the fourth oil outlet are spaced apart along the second direction.

[0026] The oil outlet channels are connected to the oil pan through the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet, respectively.

[0027] Optionally, the oil outlet channel includes a first oil passage connected to the first oil outlet, a second oil passage connected to the second oil outlet, a third oil passage connected to the third oil outlet, and a fourth oil passage connected to the fourth oil outlet.

[0028] The first oil circuit, the second oil circuit, the third oil circuit, and the fourth oil circuit are all connected to the second oil pump.

[0029] Optionally, the engine further includes a first cylinder head, the first oil outlet region includes a fifth oil outlet portion disposed on the first cylinder head, the third oil outlet region includes a sixth oil outlet portion connected to the first cylinder head passage, the fifth oil outlet portion and the sixth oil outlet portion being spaced apart along the second direction; the oil outlet passage is connected to the first cylinder head through the fifth oil outlet portion and the sixth oil outlet portion respectively; and / or,

[0030] The engine further includes a second cylinder head, the second oil outlet region includes a seventh oil outlet portion disposed on the second cylinder head, the fourth oil outlet region includes an eighth oil outlet portion disposed on the second cylinder head, the seventh oil outlet portion and the eighth oil outlet portion are spaced apart along the second direction; the oil outlet channel is connected to the second cylinder head through the seventh oil outlet portion and the eighth oil outlet portion respectively;

[0031] The first cylinder head and the second cylinder head are spaced apart along the first direction.

[0032] Optionally, the oil outlet channel includes a fifth oil passage connected to the fifth oil outlet, a sixth oil passage connected to the sixth oil outlet, a seventh oil passage connected to the seventh oil outlet, and an eighth oil passage connected to the eighth oil outlet.

[0033] The fifth, sixth, seventh, and eighth oil passages are all connected to the second oil pump.

[0034] Secondly, embodiments of the present invention also provide a vehicle, including a fuel tank and the aforementioned engine assembly;

[0035] The fuel tank is connected to the fuel inlet and fuel outlet channels of the engine assembly, respectively.

[0036] The embodiments of the present invention have the following advantages:

[0037] In this embodiment of the invention, the first oil pump is connected to the oil inlet channel to draw oil into the engine, and the second oil pump is connected to the oil outlet channel to draw oil out of the engine. The power P2 of the second oil pump is greater than or equal to the power P1 of the first oil pump. Thus, even if some of the oil inlets of the second oil pump are empty, the oil inlets of the second oil pump that are not empty can draw in a sufficient amount of oil with a larger power. This ensures that the oil drawn in by the first oil pump can be drawn out by the second oil pump, effectively ensuring that the oil circulates through the engine and effectively ensuring the lubrication of the internal components of the engine, thereby avoiding dry friction damage to the internal parts of the engine. Attached Figure Description

[0038] Figure 1 This is a partial structural diagram of an engine assembly according to the present invention;

[0039] Figure 2 This is a schematic diagram of the structure of a first oil pump according to the present invention;

[0040] Figure 3 This is a schematic diagram of the structure of a second oil pump according to the present invention;

[0041] Figure 4 This is a partial structural diagram of another engine assembly according to the present invention;

[0042] Figure 5 This is a schematic diagram of the structure of an oil pan according to the present invention;

[0043] Figure 6 This is a schematic diagram of one working condition of the present invention.

[0044] Explanation of reference numerals in the attached figures:

[0045] 1. First oil pump; 11. First oil suction port; 12. First oil pump outlet; 2. Second oil pump; 21. Second oil suction port; 22. Third oil suction port; 23. Fourth oil suction port; 24. Fifth oil suction port; 25. Sixth oil suction port; 26. Seventh oil suction port; 27. Eighth oil suction port; 28. Ninth oil suction port; 29. ​​Second oil pump outlet; 3. Engine; 31. Oil pan; 32. First cylinder head; 33. Second cylinder head; 41. First oil passage; 42. Second oil passage; 43. Third oil passage; 44. Fourth oil passage. Detailed Implementation

[0046] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0047] The terms "first" and "second" in the specification and claims of this application may explicitly or implicitly include one or more of the features. In the description of this invention, unless otherwise stated, "a plurality of" means two or more. Furthermore, in the specification and claims, "and / or" indicates at least one of the connected objects, and the character " / " generally indicates that the preceding and following objects are in an "or" relationship.

[0048] In the description of this invention, 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" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0049] In the description of this invention, it should be noted that, unless otherwise explicitly 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0050] One of the core concepts of this invention is to disclose an engine assembly, which may include: a first oil pump 1, a second oil pump 2, an engine 3, and an oil inlet channel and an oil outlet channel respectively connected to the engine 3; wherein, the first oil pump 1 is connected to the oil inlet channel and is adapted to pump oil into the engine 3; the second oil pump 2 is connected to the oil outlet channel and is adapted to pump oil out of the engine 3; the power P2 of the second oil pump 2 is greater than or equal to the power P1 of the first oil pump 1.

[0051] In this embodiment of the invention, the first oil pump 1 is connected to the oil inlet channel to draw oil into the engine 3, and the second oil pump 2 is connected to the oil outlet channel to draw oil out of the engine 3. The power P2 of the second oil pump 2 is greater than or equal to the power P1 of the first oil pump 1. In this way, even if some oil inlets of the second oil pump 2 are empty, the oil inlets of the second oil pump 2 that are not empty can draw in a sufficient amount of oil with a larger power. This ensures that the oil drawn in by the first oil pump 1 can be drawn out by the second oil pump 2, effectively ensuring that the oil circulates through the engine 3, effectively ensuring the lubrication of the internal components of the engine 3, and thus avoiding the phenomenon of dry friction damage to the internal parts of the engine 3.

[0052] Specifically, the oil inlet channel can be connected to the engine 3 and the first oil tank respectively, and the oil inlet channel can transfer the oil in the first oil tank to the engine 3.

[0053] Furthermore, the first oil pump 1 can be connected to the oil inlet channel and used as an oil supply pump, suitable for drawing oil from the first oil tank into the engine 3. The first oil pump 1 can specifically be a centrifugal pump, piston pump, etc., and the specific type of the first oil pump 1 is not limited in this embodiment of the invention.

[0054] like Figure 2 As shown, the first oil pump 1 may have a first oil suction port 11 and a first oil pump outlet 12. The first oil suction port 11 can be connected to the first oil tank through an oil inlet channel, and the first oil pump outlet 12 can be connected to the engine 3 through an oil inlet channel.

[0055] Specifically, the oil outlet channel can be connected to the engine 3 and the second oil tank respectively, and the oil outlet channel can transfer the oil in the engine 3 to the second oil tank.

[0056] Furthermore, the second oil pump 2 can be connected to the oil outlet channel and used as an oil outlet pump, suitable for drawing oil from the engine 3 to the second oil tank. Specifically, the second oil pump 2 can be a centrifugal pump, a piston pump, etc., and the specific type of the second oil pump 2 is not limited in this embodiment of the invention.

[0057] Optionally, the second oil pump 2 may also include a second oil pump outlet 29, which may be connected to the second oil tank.

[0058] Specifically, the first oil tank and the second oil tank may be the same or different. In this embodiment of the invention, the first oil tank and the second oil tank are the same. The second oil pump 2 is used as a return oil pump. In this way, the first oil pump 1 can pump the oil in the oil tank into the engine 3, and the second oil pump 2 can pump the oil in the engine 3 back to the oil tank, so that the oil can circulate between the oil tank and the engine 3, which can save oil.

[0059] Specifically, the power P2 of the second oil pump 2 is greater than or equal to the power P1 of the first oil pump 1. In this way, even if some of the oil inlets of the second oil pump 2 are empty, the oil inlets of the second oil pump 2 that are not empty can draw in a sufficient amount of oil with a larger power. That is, with the cooperation of the first oil pump 1 and the second oil pump 2, it is easy to ensure that the amount of oil flowing into the engine 3 through the oil inlet channel is equal to or less than the amount of oil flowing out of the engine 3 through the oil outlet channel. This can effectively ensure that the oil is always circulating between the oil tank and the engine 3, thereby ensuring the lubrication of the internal parts of the engine 3 and reducing the failure rate of the engine 3.

[0060] Optionally, the engine 3 has multiple oil outlet areas, and the second oil pump 2 is connected to the multiple oil outlet areas respectively through the oil outlet channel.

[0061] In this embodiment of the invention, the engine 3 can discharge oil through at least one oil outlet area, which facilitates the second oil pump 2 to extract the oil from the engine 3.

[0062] Specifically, the engine 3 has multiple oil outlet areas, which can be distributed in multiple locations to adapt to the state of the engine assembly. For example, the engine assembly can have a flat position and an inclined position. In the flat position, all oil outlet areas can outlet oil, while in the inclined position, only some oil outlet areas can outlet oil. Regardless of whether the engine 3 is in a flat or inclined position, at least some oil outlet areas can outlet oil, so that the second oil pump 2 can extract oil from the engine 3, ensuring that the oil pumped into the engine 3 by the first oil pump 1 can be extracted by the second oil pump 2.

[0063] Specifically, in the tilted state, the engine assembly can be climbing, descending, tilting left, or tilting right, which easily causes the oil in the engine 3 to concentrate in a portion of the oil outlet areas. This allows the second oil pump 2 to draw oil through these areas, while other oil outlet areas remain suspended and unable to discharge oil, resulting in the second oil pump 2 drawing oil through these areas. For example, if the engine 3 has 8 oil outlet areas, in the tilted state, only 4 or 6 oil outlet areas can discharge oil, allowing the second oil pump 2 to draw oil through these 4 or 6 areas; or, if the engine has 6 oil outlet areas, in the tilted state, only 3 oil outlet areas can discharge oil, allowing the second oil pump 2 to draw oil through these 3 areas.

[0064] Optionally, the number of oil outlet areas is A, and when the engine assembly is in an inclined state, the number of oil outlet areas that can be pumped by the second oil pump 2 is B, and P1 and P2 satisfy: This allows the second oil pump 2 to have the ability to pump a larger or equal amount of oil than the first oil pump 1. This ensures that the second oil pump 2 can promptly pump oil out of the engine, thereby ensuring the reliability of oil circulation through the engine.

[0065] Specifically, when the engine assembly is tilted, the second oil pump 2 can only draw oil through a portion of the oil outlet areas. The number of these partial oil outlet areas is B, meaning the actual number of areas where oil can return is B, and the total number of oil outlet areas is A. For example, if the engine has 8 oil outlet areas, when the engine assembly is tilted, the second oil pump 2 can only draw oil through 4 oil outlet areas, i.e., A = 8, B = 4, P2 / P1 = 8 / 4 = 2. Alternatively, if the engine has 8 oil outlet areas, when the engine assembly is at its maximum tilt, the second oil pump 2 can only draw oil through 2 oil outlet areas, i.e., A = 8, B = 2, P2 / P1 = 8 / 2 = 4. Or, if the engine has 6 oil outlet areas, when the engine assembly is tilted, the second oil pump 2 can only draw oil through 2 oil outlet areas, i.e., A = 6, B = 2, P2 / P1 = 6 / 2 = 3. Alternatively, taking an engine with four oil outlet areas as an example, when the engine assembly is tilted, the second oil pump can only draw oil through two oil outlet areas, i.e., A=4, B=2, P2 / P1=4 / 2=2.

[0066] Furthermore, P1 and P2 satisfy: This ensures that the power of the second oil pump 2 is not too high, which helps to save costs and reduce waste.

[0067] Optionally, the plurality of oil outlet areas may include a first oil outlet area and a second oil outlet area spaced apart along a first direction, and a third oil outlet area and a fourth oil outlet area spaced apart along the first direction; the first oil outlet area and the third oil outlet area are spaced apart along a second direction, the second oil outlet area and the fourth oil outlet area are spaced apart along a second direction, and the second direction intersects the first direction.

[0068] In this embodiment of the invention, the first oil outlet area and the second oil outlet area are spaced apart along a first direction, the first oil outlet area and the third oil outlet area are spaced apart along a second direction, the second oil outlet area and the fourth oil outlet area are spaced apart along a second direction, and the third oil outlet area and the fourth oil outlet area are spaced apart along a first direction. This allows the first oil outlet area, the second oil outlet area, the third oil outlet area, and the fourth oil outlet area to be distributed at the four corners of the engine 3. This ensures that under different operating conditions, the second oil pump 2 can extract oil from the engine 3 through at least a portion of the oil outlet area, thereby ensuring that the oil flowing into the engine 3 through the oil inlet channel can be extracted by the second oil pump 2.

[0069] Specifically, the first direction and the second direction can intersect or be perpendicular. In this embodiment of the invention, the first direction can be the width direction of the engine 3, and the second direction can be the length direction of the engine 3, as an example. Figure 1 As shown, the first direction is Figure 1 The direction indicated by the middle arrow S1 is the first direction. Figure 1 The direction indicated by the middle arrow S2.

[0070] Specifically, the engine 3 may have a first oil outlet area at the front left, a third oil outlet area at the rear left, a second oil outlet area at the front right, and a fourth oil outlet area at the rear right. When the engine assembly is tilted to the left, the left side of the engine 3 is tilted upwards, and the height of the left side of the engine 3 is higher than that of the right side. The second oil pump 2 can extract oil from the engine 3 through the second and fourth oil outlet areas on the right side. When the engine assembly is tilted to the right, the right side of the engine 3 is tilted upwards, and the height of the right side of the engine 3 is higher than that of the left side. The second oil pump 2 can extract oil from the engine 3 through the first and third oil outlet areas on the left side. When the engine assembly is climbing, the front side of the engine 3 is tilted upwards, and the height of the front side of the engine 3 is higher than that of the rear side. The second oil pump 2 can extract oil from the engine 3 through the third and fourth oil outlet areas on the rear side. When the engine assembly is descending, the rear side of the engine 3 is tilted upwards, and the height of the rear side of the engine 3 is higher than that of the front side. The second oil pump 2 can extract oil from the engine 3 through the first and second oil outlet areas on the front side.

[0071] Furthermore, P2 = K1 * P1, 2 ≤ K1 ≤ 3, which ensures that the amount of oil flowing into the engine 3 through the oil inlet channel is equal to the amount of oil flowing out of the engine 3 through the oil outlet channel under different operating conditions.

[0072] Specifically, K1 is the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump. K1 is a constant, and the value of K1 ranges from 2 to 3. For example, K1 = 2, or K1 = 2.2, or K1 = 2.8, or K1 = 3, etc.

[0073] Specifically, when the engine assembly is tilted to the left, tilted to the right, climbing uphill, or going downhill, the second oil pump 2 can draw oil out of the engine 3 through half of the oil outlet area. The power of the second oil pump 2 is 2-3 times that of the first oil pump 1, which helps to ensure that the oil drawn into the engine 3 by the first oil pump 1 is drawn out of the engine 3 by the second oil pump 2, avoiding noise caused by the second oil pump 2 sucking in air for a long time. In addition, it can also avoid the second oil pump 2 having too much power, causing power loss of the engine 3.

[0074] Optionally, the vehicle further includes a first drive unit, which is connected to the first oil pump 1 and the second oil pump 2 respectively, and is adapted to simultaneously activate the first oil pump 1 and the second oil pump 2.

[0075] In this embodiment of the invention, the first driving member is connected to the first oil pump 1 and the second oil pump 2 respectively, so that the first oil pump 1 and the second oil pump 2 come from the same driving force, which makes it easy to start the first oil pump 1 and the second oil pump 2 at the same time, thereby ensuring that the oil flowing into the engine 3 through the oil inlet channel can always be drawn out of the engine 3 by the second oil pump 2.

[0076] Specifically, the first driving component can be a cylinder or an electric motor, etc. For example, the first driving component can be connected to the first oil pump 1 and the second oil pump 2 via a crankshaft, so that the first oil pump 1 and the second oil pump 2 are driven coaxially. The first oil pump 1 and the second oil pump 2 rotate at the same speed, which can ensure that the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 remains consistent at all speeds.

[0077] In this embodiment of the invention, the ratio between the power of the first oil pump 1 and the power of the second oil pump 2 can be a constant K1, where 2≤K1≤3. For example, K1=2, or K1=2.5, or K1=3, etc.

[0078] In some alternative embodiments of the present invention, the engine assembly may have at least two operating conditions. The embodiments of the present invention are only described with the engine assembly having a first operating condition, a second operating condition, and a third operating condition as examples. In the first operating condition, P2 = K2 * P1, 1 ≤ K2 ≤ 2; in the second operating condition, P2 = K3 * P1, 1.5 ≤ K3 ≤ 2.5; in the third operating condition, P2 = K4 * P1, 2 ≤ K4 ≤ 3.

[0079] In this embodiment of the invention, under the first working condition, the second working condition, and the third working condition, the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump 1 can be different, so that the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump 1 can be adaptively adjusted according to the specific working condition, which is convenient for reducing energy consumption.

[0080] Specifically, K2 is the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump 1. K2 is a constant, and the value of K2 ranges from 1 to 2. For example, K1 = 1, or K1 = 1.2, or K1 = 1.6, or K2 = 2, etc.

[0081] Specifically, K3 is the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump 1, K2 is a constant, and the value of K3 ranges from 1.5 to 2.5; for example, K3 = 1.5, or K3 = 1.9, or K3 = 2, or K3 = 2.5, etc.

[0082] Specifically, K4 is the ratio between the power P2 of the second oil pump 2 and the power P1 of the first oil pump 1. K4 is a constant, and the value of K4 ranges from 2 to 3. For example, K4 = 2, or K4 = 2.5, or K4 = 2.9, or K4 = 3, etc.

[0083] Specifically, in the first operating condition, the engine assembly can be in a horizontal position, and the second oil pump 2 can extract oil from the engine 3 through all oil outlet areas. In this case, K2 can be greater than or equal to 1 and less than or equal to 2, ensuring that the amount of oil flowing into the engine 3 through the oil inlet channel is equal to the amount of oil flowing out of the oil outlet channel. In the second operating condition, the engine assembly can be in a left-tilted position, and the second oil pump 2 can extract oil from the engine 3 through the second and fourth oil outlet areas on the right side. In this case, K3 can be greater than or equal to 1.5 and less than or equal to 2.5, ensuring that the amount of oil flowing into the engine 3 through the oil inlet channel is equal to the amount of oil flowing out of the oil outlet channel.

[0084] Alternatively, in the second operating condition, the engine assembly can be tilted to the right, and the second oil pump 2 can extract oil from the engine 3 through the first and third oil outlet areas on the left. In this case, K2 can be greater than or equal to 1.5 and less than or equal to 2.5.

[0085] In the third operating condition, the engine assembly can be in a climbing state. The second oil pump 2 can extract oil from the engine 3 through the third and fourth oil outlet areas on the rear side. At this time, K3 can be greater than or equal to 2 and less than or equal to 3.

[0086] Alternatively, in the third operating condition, the engine 3 can be in a downhill state, and the second oil pump 2 can extract oil from the engine 3 through the first and second oil outlet areas on the front side. In this case, K3 can be greater than or equal to 2 and less than or equal to 3.

[0087] Optionally, the vehicle further includes a controller, a second drive unit, and a third drive unit; the second drive unit is connected to the controller and the first oil pump 1 respectively, and the controller is adapted to turn on the first oil pump 1 through the second drive unit; the third drive unit is connected to the controller and the second oil pump 2 respectively, and in the first operating condition, the controller is adapted to adjust the second oil pump 2 to switch to a first power through the third drive unit; in the second operating condition, the controller is adapted to adjust the second oil pump 2 to switch to a second power through the third drive unit; and in the first operating condition, the controller is adapted to adjust the second oil pump 2 to switch to a third power through the third drive unit.

[0088] In this embodiment of the invention, the controller can simultaneously drive the second and third driving components to ensure that the amount of oil flowing into the engine 3 through the oil inlet channel is always equal to the amount of oil flowing out of the engine 3 through the oil outlet channel. The controller can also adjust the second oil pump 2 to switch between the first power, the second power, and the third power via the third driving component, so that the engine 3 can adapt to different operating conditions, which helps reduce wear and tear.

[0089] Specifically, the second driving component can be a cylinder or a motor, etc. The third driving component can also be a cylinder or a motor, etc. In this embodiment of the invention, the second driving component can be connected to the first oil pump 1 and is adapted to open and close the first oil pump 1, and the third driving component can be connected to the second oil pump 2 and is adapted to open and close the second oil pump 2, so that the first oil pump 1 and the second oil pump 2 can be set independently.

[0090] In this embodiment of the invention, the power of the second oil pump 2 is adjustable. When the power of the second oil pump 2 is a first power, the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K2; when the power of the second oil pump 2 is a second power, the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K3; when the power of the second oil pump 2 is a third power, the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K4.

[0091] In other embodiments, the power of the first oil pump 1 can be designed to be adjustable, while the power of the second oil pump 2 can be non-adjustable. For example, in a first operating condition, the controller is adapted to adjust the power of the first oil pump 1 to a fourth power through the second drive component, such that the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K2; in a second operating condition, the controller is adapted to adjust the power of the first oil pump to a fifth power through the second drive component, such that the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K3; in a third operating condition, the controller is adapted to adjust the power of the first oil pump 1 to a sixth power through the second drive component, such that the ratio between the power of the second oil pump 2 and the power of the first oil pump 1 can be a constant K4.

[0092] Specifically, it is necessary to ensure that sufficient oil is supplied to the engine so that all components inside the engine receive adequate lubrication. Preferably, the power of the first oil pump 1 is not adjustable, while the power of the second oil pump 2 is adjustable.

[0093] In some alternative embodiments of the present invention, the engine 3 includes an oil pan 31 connected to the oil inlet channel; the first oil outlet region includes a first oil outlet portion disposed on the oil pan 31; the second oil outlet region includes a second oil outlet portion disposed on the oil pan 31; the third oil outlet region includes a third oil outlet portion disposed on the oil pan 31; and the fourth oil outlet region includes a fourth oil outlet portion disposed on the oil pan 31. The first oil outlet portion and the second oil outlet portion are spaced apart along the first direction, the third oil outlet portion and the fourth oil outlet portion are spaced apart along the first direction, the first oil outlet portion and the third oil outlet portion are spaced apart along the second direction, and the second oil outlet portion and the fourth oil outlet portion are spaced apart along the second direction. The oil outlet channel is connected to the oil pan 31 through the first oil outlet portion, the second oil outlet portion, the third oil outlet portion and the fourth oil outlet portion.

[0094] In this embodiment of the invention, the first oil outlet and the second oil outlet are spaced apart along the first direction, the third oil outlet and the fourth oil outlet are spaced apart along the first direction, the first oil outlet and the third oil outlet are spaced apart along the second direction, and the second oil outlet and the fourth oil outlet are spaced apart along the second direction, so that the first oil outlet, the second oil outlet, the third oil outlet and the fourth oil outlet are distributed at the four corners of the oil pan 31, which facilitates the discharge of oil from the oil pan 31 through different oil outlets under various working conditions, facilitates the timely discharge of oil from the oil pan 31, ensures the circulation of oil through the oil pan 31, and improves the lubrication effect on the parts inside the oil pan 31.

[0095] Specifically, the oil inlet passage can be directly connected to the oil pan 31, or it can be indirectly connected to the oil pan 31. For example, the oil inlet passage can be connected to the engine block, so that the oil flows into the engine block first and then into the oil pan.

[0096] Specifically, the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet can all be connected to the oil outlet channel. The first oil outlet can be an open or a groove structure, the second oil outlet can be an open or a groove structure, the third oil outlet can be an open or a groove structure, and the fourth oil outlet can be an open or a groove structure. The shapes of the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet can be the same or different. This embodiment of the invention does not specifically limit this.

[0097] Specifically, a first oil outlet is located at the front left of the oil pan 31, a second oil outlet at the front right of the oil pan 31, a third oil outlet at the rear left of the oil pan 31, and a fourth oil outlet at the rear right of the oil pan 31. When the engine assembly is tilted to the left, the second oil pump 2 can extract oil from the oil pan 31 through the second and fourth oil outlets on the right side; when the engine assembly is tilted to the right, the second oil pump 2 can extract oil from the oil pan 31 through the first and third oil outlets on the left side; when the engine assembly is climbing, the second oil pump 2 can extract oil from the oil pan 31 through the third and fourth oil outlets on the rear side; when the engine assembly is descending, the second oil pump 2 can extract oil from the oil pan 31 through the first and second oil outlets on the front side.

[0098] Optionally, such as Figure 5 As shown, the oil outlet channel includes a first oil passage 41 connected to the first oil outlet, a second oil passage 42 connected to the second oil outlet, a third oil passage 43 connected to the third oil outlet, and a fourth oil passage 44 connected to the fourth oil outlet; the first oil passage 41, the second oil passage 42, the third oil passage 43, and the fourth oil passage 44 are all connected to the second oil pump 2.

[0099] In this embodiment of the invention, the first oil passage 41 and the first oil outlet are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the engine 3 through the first oil outlet. The second oil passage 42 and the second oil outlet are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the engine 3 through the second oil outlet. The third oil passage 43 and the third oil outlet are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the engine 3 through the third oil outlet. The fourth oil passage 44 and the fourth oil outlet are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the engine 3 through the fourth oil outlet.

[0100] Specifically, in combination Figure 1 and Figure 3 As shown, the second oil pump 2 may have a second oil suction port 21, a third oil suction port 22, a fourth oil suction port 23 and a fifth oil suction port 24. The second oil suction port 21 can be connected to the first oil outlet at the left front of the oil pan 31 through the first oil passage. The third oil suction port 22 can be connected to the second oil outlet at the right front of the oil pan 31 through the second oil passage. The fourth oil suction port 23 can be connected to the third oil outlet at the left rear of the oil pan 31 through the third oil passage. The fifth oil suction port 24 can be connected to the fourth oil outlet at the right rear of the oil pan 31 through the fourth oil passage.

[0101] Furthermore, such as Figure 6 As shown, when the engine assembly is tilted to the left, the second oil intake port 21 and the fourth oil intake port 23 are empty, while the third oil intake port 22 and the fifth oil intake port 24 are drawing oil; when the engine assembly is tilted to the right, the second oil intake port 21 and the fourth oil intake port 23 are drawing oil, while the third oil intake port 22 and the fifth oil intake port 24 are empty; when the engine assembly is climbing, the second oil intake port 21 and the third oil intake port 22 are empty, while the fourth oil intake port 23 and the fifth oil intake port 24 are drawing oil; when the engine assembly is descending, the second oil intake port 21 and the third oil intake port 22 are drawing oil, while the fourth oil intake port 23 and the fifth oil intake port 24 are empty.

[0102] In some alternative embodiments of the present invention, the engine 3 further includes a first cylinder head 32 and a second cylinder head 33, wherein the first cylinder head 32 and the second cylinder head 33 may be spaced apart along the first direction, such as... Figure 2 As shown, the first cylinder head 32 is the left cylinder head, and the second cylinder head 33 is the right cylinder head.

[0103] Optionally, the first oil outlet area includes a fifth oil outlet portion disposed on the first cylinder head 32, and the third oil outlet area includes a sixth oil outlet portion disposed on the first cylinder head 32. The fifth oil outlet portion and the sixth oil outlet portion are spaced apart along the second direction. The oil outlet channel is connected to the first cylinder head 32 through the fifth oil outlet portion and the sixth oil outlet portion, respectively.

[0104] In this embodiment of the invention, the fifth oil outlet and the sixth oil outlet are spaced apart along the second direction, such that the fifth oil outlet and the sixth oil outlet are distributed on both sides of the first cylinder head 32 along the second direction. In this way, under different operating conditions, the oil in the first cylinder head 32 can be discharged through the fifth oil outlet and / or the sixth oil outlet, which facilitates the timely discharge of the oil in the first cylinder head 32, ensures that the oil circulates through the first cylinder head 32, and improves the lubrication effect on the parts in the first cylinder head 32.

[0105] Optionally, the second oil outlet area includes a seventh oil outlet portion disposed on the second cylinder head 33, and the fourth oil outlet area includes an eighth oil outlet portion disposed on the second cylinder head 33. The seventh oil outlet portion and the eighth oil outlet portion are spaced apart along the second direction. The oil outlet channel is connected to the second cylinder head 33 through the seventh oil outlet portion and the eighth oil outlet portion, respectively.

[0106] In this embodiment of the invention, the seventh oil outlet and the eighth oil outlet are spaced apart along the second direction, so that the seventh oil outlet and the eighth oil outlet can be distributed on both sides of the second cylinder head 33 along the second direction. In this way, under different working conditions, the oil in the second cylinder head 33 can be discharged through the seventh oil outlet and / or the eighth oil outlet, which facilitates the timely discharge of the oil in the second cylinder head 33, ensures that the oil circulates through the second cylinder head 33, and improves the lubrication effect on the parts in the second cylinder head 33.

[0107] Specifically, such as Figure 4 As shown, the first cylinder head 32 has a fifth oil outlet on its front side and a sixth oil outlet on its rear side, while the second cylinder head 33 has a seventh and an eighth oil outlet on its front side. When the engine assembly is climbing a slope, the second oil pump 2 can extract oil from the first cylinder head 32 through the fifth oil outlet and extract oil from the second cylinder head 33 through the seventh oil outlet; when the engine assembly is descending a slope, the second oil pump 2 can extract oil from the first cylinder head 32 through the sixth oil outlet and extract oil from the second cylinder head 33 through the eighth oil outlet.

[0108] Optionally, the oil outlet channel includes a fifth oil passage connected to the fifth oil outlet, a sixth oil passage connected to the sixth oil outlet, a seventh oil passage connected to the seventh oil outlet, and an eighth oil passage connected to the eighth oil outlet; the fifth oil passage, the sixth oil passage, the seventh oil passage, and the eighth oil passage are all connected to the second oil pump 2.

[0109] In this embodiment of the invention, the fifth oil outlet and the fifth oil passage are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the first cylinder head 32 through the fifth oil outlet. Similarly, the sixth oil outlet and the sixth oil passage are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thus improving the reliability of the second oil pump 2 drawing oil out of the first cylinder head 32 through the sixth oil outlet. The seventh oil outlet and the seventh oil passage are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thereby improving the reliability of the second oil pump 2 drawing oil out of the second cylinder head 33 through the seventh oil outlet. Finally, the eighth oil outlet and the eighth oil passage are correspondingly arranged to prevent the second oil pump 2 from drawing in air, thus improving the reliability of the second oil pump 2 drawing oil out of the second cylinder head 33 through the eighth oil outlet.

[0110] Specifically, in combination Figure 3 and Figure 4 As shown, the second oil pump 2 may have a sixth oil suction port 25, a seventh oil suction port 26, an eighth oil suction port 27, and a ninth oil suction port 28. The sixth oil suction port 25 can be connected to the fifth oil outlet in front of the first cylinder head 32 through the fifth oil passage. The seventh oil suction port 26 can be connected to the sixth oil outlet behind the first cylinder head 32 through the sixth oil passage. The eighth oil suction port 27 can be connected to the seventh oil outlet in front of the second cylinder head 33 through the seventh oil passage. The ninth oil suction port 28 can be connected to the eighth oil outlet behind the second cylinder head 33 through the eighth oil passage.

[0111] Furthermore, such as Figure 5 As shown, when the engine assembly is tilted to the left or right, the sixth oil intake port 25, the seventh oil intake port 26, the eighth oil intake port 27, and the ninth oil intake port 28 can all draw oil; when the engine assembly is climbing, the sixth oil intake port 25 and the eighth oil intake port 27 are empty, while the seventh oil intake port 26 and the ninth oil intake port 28 draw oil; when the engine assembly is descending, the sixth oil intake port 25 and the eighth oil intake port 27 draw oil, while the seventh oil intake port 26 and the ninth oil intake port 28 are empty.

[0112] Specifically, the number of second oil pumps 2 can be one or more, for example, such as Figure 3As shown, the second oil suction port 21, the third oil suction port 22, the fourth oil suction port 23, the fifth oil suction port 24, the sixth oil suction port 25, the seventh oil suction port 26, the eighth oil suction port 27, and the ninth oil suction port 28 all come from one second oil pump 2, that is, the number of first oil pump 1 is one; in other cases, it can also be set that the second oil suction port 21 and the third oil suction port 22 come from one second oil pump 2, the fourth oil suction port 23 and the fifth oil suction port 24 come from one second oil pump 2, the sixth oil suction port 25 and the seventh oil suction port 26 come from one second oil pump 2, and the eighth oil suction port 27 and the ninth oil suction port 28 come from one second oil pump 2, that is, the number of second oil pump 2 is four.

[0113] The engine assembly described in this embodiment of the invention has at least the following advantages:

[0114] In this embodiment of the invention, the first oil pump is connected to the oil inlet channel to draw oil into the engine, and the second oil pump is connected to the oil outlet channel to draw oil out of the engine. The power P2 of the second oil pump is greater than or equal to the power P1 of the first oil pump. Thus, even if some of the oil inlets of the second oil pump are empty, the oil inlets of the second oil pump that are not empty can draw in a sufficient amount of oil with a larger power. This ensures that the oil drawn in by the first oil pump can be drawn out by the second oil pump, effectively ensuring that the oil circulates through the engine and effectively ensuring the lubrication of the internal components of the engine, thereby avoiding dry friction damage to the internal parts of the engine.

[0115] Secondly, embodiments of the present invention also disclose a vehicle, which may include a fuel tank and the aforementioned engine assembly 3; the fuel tank is connected to the fuel inlet channel and the fuel outlet channel of the engine assembly 3 respectively.

[0116] In this embodiment of the invention, the first oil pump 1 can draw oil from the oil tank into the engine 3 through the oil inlet channel, and the second oil pump 2 can draw oil from the engine 3 back into the oil tank through the oil outlet channel, so that the oil can circulate through the engine 3, which facilitates the lubrication of the parts inside the engine 3.

[0117] The vehicle described in the embodiments of the present invention has at least the following advantages:

[0118] In this embodiment of the invention, the first oil pump is connected to the oil inlet channel to draw oil into the engine, and the second oil pump is connected to the oil outlet channel to draw oil out of the engine. The power P2 of the second oil pump is greater than or equal to the power P1 of the first oil pump. Thus, even if some of the oil inlets of the second oil pump are empty, the oil inlets of the second oil pump that are not empty can draw in a sufficient amount of oil with a larger power. This ensures that the amount of oil drawn in by the first oil pump can be drawn out by the second oil pump, effectively ensuring that the oil circulates through the engine and effectively ensuring the lubrication of the internal components of the engine, thereby avoiding dry friction damage to the internal parts of the engine.

[0119] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of the embodiments of the present invention.

[0120] Finally, it should be noted that in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or terminal device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or terminal device. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or terminal device that includes said element.

[0121] The present invention has provided a detailed description of an engine assembly and a vehicle. Specific examples have been used to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only for the purpose of helping to understand the method and core ideas of the present invention. At the same time, those skilled in the art will know that there will be changes in the specific implementation methods and application scope based on the ideas of the present invention. Therefore, the content of this specification should not be construed as a limitation of the present invention.

Claims

1. An engine assembly, characterized in that, include: The system comprises a first oil pump (1), a second oil pump (2), an engine (3), and an oil inlet channel and an oil outlet channel respectively connected to the engine (3); wherein, The first oil pump (1) is connected to the oil inlet channel and is adapted to pump oil into the engine (3); The second oil pump (2) is connected to the oil outlet channel and is adapted to draw oil out of the engine (3); The power P2 of the second oil pump (2) is greater than or equal to the power P1 of the first oil pump (1).

2. The engine assembly according to claim 1, characterized in that, The engine (3) has multiple oil outlet areas, and the second oil pump (2) is connected to the multiple oil outlet areas respectively through the oil outlet channel.

3. The engine assembly according to claim 2, characterized in that, The number of oil outlet areas is A, and the number of oil outlet areas that can be pumped by the second oil pump (2) when the engine assembly is in an inclined state is B. P1 and P2 satisfy:

4. The engine assembly according to claim 3, characterized in that, P1 and P2 satisfy:

5. The engine assembly according to claim 2, characterized in that, The plurality of oil outlet areas include a first oil outlet area and a second oil outlet area spaced apart along a first direction, and a third oil outlet area and a fourth oil outlet area spaced apart along a first direction; The first oil outlet area and the third oil outlet area are spaced apart along the second direction, and the second oil outlet area and the fourth oil outlet area are spaced apart along the second direction, the second direction intersecting the first direction.

6. The engine assembly according to claim 5, characterized in that, P2 = K1 * P1, 2 ≤ K1 ≤ 3.

7. The engine assembly according to claim 6, characterized in that, The engine assembly further includes a first drive unit, which is connected to the first oil pump (1) and the second oil pump (2) respectively, and is adapted to simultaneously turn on the first oil pump (1) and the second oil pump (2).

8. The engine assembly according to claim 5, characterized in that, The engine assembly has a first operating condition, a second operating condition, and a third operating condition; Under the first working condition, P2 = K2 * P1, 1 ≤ K2 ≤ 2; Under the second operating condition, P2 = K3 * P1, 1.5 ≤ K3 ≤ 2.5; Under the third operating condition, P2 = K4 * P1, 2 ≤ K4 ≤ 3.

9. The engine assembly according to claim 8, characterized in that, The engine assembly also includes a controller, a second drive unit, and a third drive unit; The second drive unit is connected to the controller and the first oil pump (1) respectively, and the controller is adapted to start the first oil pump (1) through the second drive unit; The third drive unit is connected to the controller and the second oil pump (2) respectively. In the first operating condition, the controller is adapted to adjust the second oil pump (2) to switch to the first power through the third drive unit. In the second operating condition, the controller is adapted to adjust the second oil pump (2) to switch to the second power through the third drive unit. In the third operating condition, the controller is adapted to adjust the second oil pump (2) to switch to the third power through the third drive unit.

10. The engine assembly according to claim 5, characterized in that, The engine (3) includes an oil pan (31) connected to the oil inlet channel. The first oil outlet area includes a first oil outlet portion disposed on the oil pan (31). The second oil outlet area includes a second oil outlet portion disposed on the oil pan (31). The third oil outlet area includes a third oil outlet portion disposed on the oil pan (31). The fourth oil outlet area includes a fourth oil outlet portion disposed on the oil pan (31). The first oil outlet and the second oil outlet are spaced apart along the first direction, the third oil outlet and the fourth oil outlet are spaced apart along the first direction, the first oil outlet and the third oil outlet are spaced apart along the second direction, and the second oil outlet and the fourth oil outlet are spaced apart along the second direction. The oil outlet channels are connected to the oil pan (31) through the first oil outlet, the second oil outlet, the third oil outlet, and the fourth oil outlet, respectively.

11. The engine assembly according to claim 10, characterized in that, The oil outlet channel includes a first oil passage (41) connected to the first oil outlet, a second oil passage (42) connected to the second oil outlet, a third oil passage (43) connected to the third oil outlet, and a fourth oil passage (44) connected to the fourth oil outlet; The first oil passage (41), the second oil passage (42), the third oil passage (43) and the fourth oil passage (44) are all connected to the second oil pump (2).

12. The engine assembly according to claim 5, characterized in that, The engine (3) further includes a first cylinder head (32), the first oil outlet region includes a fifth oil outlet portion disposed on the first cylinder head (32), the third oil outlet region includes a sixth oil outlet portion disposed on the first cylinder head (32), the fifth oil outlet portion and the sixth oil outlet portion are spaced apart along the second direction; the oil outlet channel is connected to the first cylinder head (32) through the fifth oil outlet portion and the sixth oil outlet portion respectively; and / or, The engine (3) further includes a second cylinder head (33), the second oil outlet area includes a seventh oil outlet portion disposed on the second cylinder head (33), the fourth oil outlet area includes an eighth oil outlet portion disposed on the second cylinder head (33), the seventh oil outlet portion and the eighth oil outlet portion are spaced apart along the second direction; the oil outlet channel is connected to the second cylinder head (33) through the seventh oil outlet portion and the eighth oil outlet portion respectively; The first cylinder head and the second cylinder head (33) are spaced apart along the first direction.

13. The engine assembly according to claim 12, characterized in that, The oil outlet channel includes a fifth oil passage connected to the fifth oil outlet, a sixth oil passage connected to the sixth oil outlet, a seventh oil passage connected to the seventh oil outlet, and an eighth oil passage connected to the eighth oil outlet. The fifth, sixth, seventh, and eighth oil circuits are all connected to the second oil pump (2).

14. A vehicle, characterized in that, Includes a fuel tank and the engine assembly as described in any one of claims 1-13; The fuel tank is connected to the fuel inlet and fuel outlet channels of the engine assembly, respectively.

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