Engine lubrication system, engine and vehicle

Abstract

The utility model discloses an engine lubricating system, engine and vehicle, engine lubricating system includes connecting on the cylinder body of engine oil pump, oil filter, oil cooler and set up on the cylinder body lubricating oil channel, oil pump, oil filter and oil cooler are communicated through lubricating oil channel, the interval of oil filter and oil pump is less than the interval of oil filter and oil cooler, in the utility model embodiment, engine lubricating system simple structure, the number of parts is less, and it is convenient and simple to install.

Description

Technical Field

[0001] This utility model relates to the field of engine technology, and in particular to an engine lubrication system, an engine, and a vehicle. Background Technology

[0002] The engine lubrication system is an important component of the engine. Its main function is to provide clean, appropriately sized, and sufficient oil to all moving parts of the engine. The engine lubrication system typically includes an oil pump, filter, and oil cooler.

[0003] In related technologies, the filter is usually integrated with the oil cooler and installed on the side of the cylinder block. However, in this arrangement, the oil needs to be transported to the filter through a long and complex oil passage after flowing out of the oil pump, resulting in a large pressure drop loss. Utility Model Content

[0004] This utility model provides an engine lubrication system, an engine, and a vehicle, aiming to at least solve the problems of complex structure and large overall size of engine lubrication systems in the prior art.

[0005] In a first aspect of this utility model, an engine lubrication system is provided, including an oil pump, an oil filter, an oil cooler connected to the cylinder block of an engine, and a lubrication oil passage disposed on the cylinder block, wherein the oil pump, the oil filter, and the oil cooler are connected through the lubrication oil passage;

[0006] The distance between the oil filter and the oil pump is less than the distance between the oil filter and the oil cooler.

[0007] Optionally, both the oil pump and the oil filter are connected to the bottom of the cylinder block, and both the oil pump and the oil filter are located on one side of the cylinder block along its length.

[0008] Optionally, the lubricating oil passage includes a main oil passage, a first oil passage, and a second oil passage. The oil pump is connected to the oil filter through the first oil passage, the oil filter is connected to the oil cooler, and the oil cooler is connected to the main oil passage through the second oil passage.

[0009] Optionally, the lubricating oil passage further includes a third oil passage, through which the oil filter is connected to the oil cooler.

[0010] Optionally, the first end of the first oil passage extends to the first oil outlet of the oil pump and is connected to the first oil outlet of the oil pump, and the second end of the first oil passage extends to the first oil inlet of the oil filter and is connected to the first oil inlet of the oil filter.

[0011] And / or, the first end of the third oil passage extends to the second oil outlet of the oil filter and is connected to the second oil outlet of the oil filter, and the second end of the third oil passage extends to the second oil inlet of the oil cooler and is connected to the second oil inlet of the oil cooler.

[0012] And / or, the end of the second oil passage away from the main oil passage extends to the third oil outlet of the oil cooler and is connected to the third oil outlet of the oil cooler.

[0013] Optionally, it also includes a cooling pump connected to the cylinder block, the cooling pump being connected to the oil cooler;

[0014] The oil cooler and the cooling pump are located on the same side of the cylinder block.

[0015] Optionally, both the oil cooler and the cooling pump are connected to the intake side wall of the cylinder block.

[0016] Optionally, the oil cooler has a coolant flow channel and a first liquid port and a second liquid port communicating with the coolant flow channel;

[0017] The cooling pump is connected to the first coolant port via a first coolant pipeline, and the second coolant port is connected to a second coolant pipeline.

[0018] The first coolant line, the second coolant line, and the oil cooler are located on the same side of the cylinder block.

[0019] Optionally, the lubricating oil passage further includes a feedback oil passage, the oil pump has a feedback oil port, and the feedback oil passage is connected to the feedback oil port and the main oil passage;

[0020] The feedback port and the first oil outlet of the oil pump are both located at the end of the oil pump closest to the oil filter, and the distance between the feedback port and the first oil outlet is less than the width of the oil pump.

[0021] The first oil passage and the feedback oil passage are located at the same end of the cylinder along the length of the cylinder.

[0022] Optionally, the feedback oil passage includes a first sub-segment, the end of which extends away from the oil pump to one side of the main oil passage and is connected to the main oil passage.

[0023] Optionally, the lubricating oil passage further includes a transverse oil passage, which is connected to the main oil passage, and a piston cooling nozzle is connected to the transverse oil passage.

[0024] The main oil passage and the transverse oil passage are located on the intake side and exhaust side of the cylinder block, respectively.

[0025] Optionally, the lubricating oil passage further includes a connecting oil passage, through which the main oil passage is connected to the transverse oil passage;

[0026] A control valve that can be opened and closed is provided at the intersection of the connecting oil passage and the transverse oil passage.

[0027] In a second aspect of this invention, an engine is also provided, including the engine lubrication system described above.

[0028] In a third aspect of this invention, a vehicle is also provided, including the engine lubrication system described above or the engine described above.

[0029] In this embodiment of the invention, the distance between the oil filter and the oil pump is smaller than the distance between the oil filter and the oil cooler. That is, the oil pump is closer to the oil filter than the oil cooler, which shortens the length of the oil passage connecting the oil pump and the oil filter, simplifies the structure of the oil passage, and reduces pressure drop loss. Furthermore, the oil pumped by the oil pump can quickly reach the oil filter, thus providing clean oil quickly. Additionally, the oil pump, oil filter, and oil cooler are respectively mounted on the cylinder block and connected by a lubrication oil passage, eliminating the need for an adapter. This results in a simple engine lubrication system structure with fewer components, making installation convenient and simple. The overall structure of the engine including this lubrication system is simple and compact, saving space occupied by adapters and reducing the overall size of the engine. Attached Figure Description

[0030] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below.

[0031] Figure 1 This is a schematic diagram of the engine lubrication system provided in an embodiment of the present invention;

[0032] Figure 2 A schematic diagram of the structure of the lubricating oil passage, oil pump, oil filter and oil cooler in the engine lubrication system provided in the embodiment of this utility model;

[0033] Figure 3 A schematic diagram of the lubrication oil passage in the engine lubrication system provided in this embodiment of the utility model. Figure 1 ;

[0034] Figure 4 A schematic diagram of the structure of the oil cooler and cooling pump in the engine lubrication system provided in this embodiment of the utility model;

[0035] Figure 5 A schematic diagram of the structure of the oil cooler, second oil passage, main oil passage, and part of the third oil passage in the engine lubrication system provided in the embodiment of this utility model;

[0036] Figure 6 This is a schematic diagram showing the flow direction of engine oil through the oil cooler in an engine lubrication system provided by an embodiment of the present invention;

[0037] Figure 7 A schematic diagram illustrating the flow direction of engine oil in an engine lubrication system after the oil cooler is removed, provided as an embodiment of this utility model.

[0038] Figure 8 A schematic diagram of the structure of the oil pump, oil filter, first oil passage, and part of the third oil passage in the engine lubrication system provided in the embodiment of this utility model;

[0039] Figure 9 A schematic diagram of the structure of the oil pump, feedback oil passage, and main oil passage in the engine lubrication system provided in this embodiment of the utility model;

[0040] Figure 10 A schematic diagram of the lubrication oil passage in the engine lubrication system provided in this embodiment of the utility model. Figure 2 ;

[0041] Figure 11 This is a schematic diagram of the installation of the control valve in the engine lubrication system provided in an embodiment of the present invention.

[0042] Figure label:

[0043] 1-Cylinder block, 101-First oil passage, 102-Second oil passage, 103-Third oil passage, 1031-First section, 1032-Second section, 104-Main oil passage, 105-Feedback oil passage, 1051-First sub-section, 1052-Second sub-section, 1053-Third sub-section, 106-Transverse oil passage, 107-Connecting oil passage, 108-Cylinder head oil passage, 109-Timing tensioner oil sump, 2-Oil pump, 201-First oil outlet, 3-Oil filter, 4-Oil cooler, 401-Second oil inlet, 402-Third oil outlet, 5-Cooling pump, 6-First coolant line, 7-Second coolant line, 8-Piston cooling nozzle, 9-Control valve, 10-Cylinder head, 11-Oil dipstick assembly, 12-Timing tensioner. Detailed Implementation

[0044] The technical solutions of the present invention will now be described with reference to the accompanying drawings in the embodiments of the present invention.

[0045] The embodiments described herein are for illustrative purposes only and are not intended to limit the scope of the invention. The invention will be described more specifically in the following paragraphs by way of example with reference to the accompanying drawings. It should be noted that the drawings are in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of the invention.

[0046] In related technologies, oil filters are typically integrated with the oil cooler and mounted on the side of the cylinder block. However, in this arrangement, the oil flowing from the oil pump needs to pass through a long and complex oil passage to reach the filter, resulting in significant pressure drop. To address these issues, this invention provides an engine lubrication system, an engine, and a vehicle. The engine lubrication system, engine, and vehicle are described in detail below.

[0047] Firstly, referring to Figures 1 to 3 This utility model provides an engine lubrication system, including an oil pump 2, an oil filter 3, an oil cooler 4 connected to the cylinder block 1 of the engine, and a lubrication oil passage disposed on the cylinder block 1. The oil pump 2, the oil filter 3, and the oil cooler 4 are connected through the lubrication oil passage; the distance between the oil filter 3 and the oil pump 2 is smaller than the distance between the oil filter 3 and the oil cooler 4.

[0048] The cylinder block 1 is the main body of the engine, connecting all the cylinders and the crankcase into a single unit. It serves as the supporting frame for mounting the pistons, crankshaft, and other parts and accessories. The cylinder block 1 can be a split design; for example, it can include an upper cylinder block and a lower cylinder block. The oil pump 2, oil filter 3, and oil cooler 4 are all connected to the cylinder block 1, and the connection method can be detachable. The oil pump 2 and oil cooler 4 can be bolted to the cylinder block 1, while the oil filter 3 can be threaded to the cylinder block 1.

[0049] The function of oil pump 2 is to pump engine oil from the oil pan. This oil pump 2 can be a variable oil pump, which is an oil pump that can dynamically adjust the oil output flow rate according to actual needs. Oil filter 3 is used to filter impurities in the engine oil to provide clean oil. Oil cooler 4 is used to cool the engine oil, typically through heat exchange between the oil and coolant.

[0050] The lubricating oil passage is the channel for transporting engine oil. It includes a main oil passage 104, a first oil passage 101, and a second oil passage 102. The oil pump 2 is connected to the oil filter 3 through the first oil passage 101; that is, the oil passage connecting the oil pump 2 and the oil filter 3 is the first oil passage 101. The oil filter 3 is connected to the oil cooler 4, and the oil cooler 4 is connected to the main oil passage 104 through the second oil passage 102. The main oil passage 104 extends along the length of the cylinder block 1. The length of the cylinder block 1 refers to the arrangement direction of the multiple cylinder bores on the cylinder block 1. The length of the cylinder block 1 can be referenced... Figure 1 and Figure 3 The direction indicated by arrow A. The lubrication passage also includes multiple main bearing oil passages, which are used to supply oil to the main bearings in the engine. The main bearing oil passages are connected to the main oil passage 104, and the multiple main bearing oil passages are distributed at intervals along the length of the cylinder block 1.

[0051] In this embodiment of the present invention, during the operation of the engine lubrication system, the oil pump 2 pumps oil from the oil pan and delivers the oil to the oil filter 3 through the first oil passage 101. After the oil filter 3 filters the oil, the clean oil flows to the oil cooler 4. After the oil cooler 4 cools the oil, the oil enters the main oil passage 104 through the second oil passage 102.

[0052] In this embodiment of the invention, the distance between the oil filter 3 and the oil pump 2 is less than the distance between the oil filter 3 and the oil cooler 4. That is, the oil pump 2 is closer to the oil filter 3 than the oil cooler 4, which shortens the length of the oil passage connecting the oil pump 2 and the oil filter 3, simplifies the structure of the oil passage, and reduces pressure drop loss. Furthermore, the oil pumped by the oil pump 2 can quickly reach the oil filter 3, thus providing clean oil quickly. Additionally, the oil pump 2, oil filter 3, and oil cooler 4 are respectively mounted on the cylinder block 1, and are connected by a lubrication oil passage. The oil cooler 4 is connected to the main oil passage 104 via a second oil passage 102 formed on the cylinder block 1. No adapter is required, resulting in a simple engine lubrication system structure with fewer components and easy installation. The overall structure of the engine including this lubrication system is simple and compact, reducing the overall engine size.

[0053] Furthermore, eliminating the adapter reduces the number of sealing points, thereby lowering the risk of seal failure and improving seal reliability. Additionally, the simple and compact lubrication channels effectively reduce pressure drop loss and decrease the flow requirements of the oil pump 2, allowing for a simpler structure and smaller size. This simplifies the structure and reduces the size of the oil pump 2, ultimately improving economic efficiency.

[0054] In related technologies, during routine after-sales maintenance and filter replacement, the repeated stress on the seal between the adapter and the cylinder block affects the sealing effect between the oil cooler and the filter and the cylinder block. In this embodiment, the oil filter 3 is connected separately to the cylinder block 1, and the replacement of the oil filter 3 during routine after-sales maintenance will not affect the sealing effect between the oil cooler 4 and the cylinder block 1.

[0055] In an optional embodiment of this utility model, reference is made to Figure 1 The oil pump 2 and the oil filter 3 are both connected to the bottom of the cylinder block 1, and the oil pump 2 and the oil filter 3 are both located at one end of the bottom of the cylinder block 1 along the length of the cylinder block 1.

[0056] Preferably, along the height direction of the cylinder block 1, the oil cooler 4 is located above the oil filter 3 and the oil pump 2. The height direction of the cylinder block 1 refers to the vertical direction extending along the depth direction of the cylinder bore on the cylinder block 1. The height direction of the cylinder block 1 can be referenced... Figure 1 The direction indicated by arrow B. The bottom of cylinder block 1 has a bottom surface, and oil pump 2 and oil filter 3 are both connected to the bottom surface of cylinder block 1. The engine also includes a timing drive system, and cylinder block 1 has a front end for arranging the timing drive system. Specifically, oil pump 2 and oil filter 3 are located at the bottom of cylinder block 1 along the length of cylinder block 1, near the front end of cylinder block 1. The timing drive system includes a timing belt or timing chain, timing tensioner 12, etc. In this example, oil pump 2 and oil filter 3 are located at the same end of the bottom of cylinder block 1. The close proximity of oil pump 2 and oil filter 3 can shorten the length of the first oil passage 101, reduce pressure drop loss, simplify the structure of the first oil passage 101, and improve the compactness of the lubrication passage.

[0057] In an optional embodiment of this utility model, the lubricating oil passage further includes a third oil passage 103, through which the oil filter 3 is connected to the oil cooler 4. The function of the third oil passage 103 is to deliver the clean oil filtered by the oil filter 3 to the oil cooler 4. In this embodiment, the oil filter 3 is connected to the oil cooler 4 via the third oil passage 103 formed on the cylinder block 1, which reduces the need for external oil passages.

[0058] In an optional embodiment of this utility model, reference is made to Figure 8 The first end of the first oil passage 101 extends to the first oil outlet 201 of the oil pump 2 and is connected to the first oil outlet 201 of the oil pump 2. The second end of the first oil passage 101 extends to the first oil inlet of the oil filter 3 and is connected to the first oil inlet of the oil filter 3.

[0059] The first oil passage 101 may include a vertical section, a horizontal section, and an arc-shaped section connected in sequence. The vertical section and the arc-shaped section are located at the first and second ends of the first oil passage 101, respectively. The vertical section is connected to the first oil outlet 201, and the arc-shaped section is connected to the first oil inlet. A first sealing ring may be provided at the junction of the first end of the first oil passage 101 and the first oil outlet 201. The first sealing ring may be embedded in a first sealing ring groove opened on the cylinder block 1. A second sealing ring may be provided at the junction of the second end of the first oil passage 101 and the first oil inlet. The second sealing ring may be provided on the oil filter 3. In this embodiment, the first and second ends of the first oil passage 101 extend directly to the first oil outlet 201 and the first oil inlet, which can reduce the need for external oil passage layout.

[0060] Reference Figure 5 and Figure 8 The first end of the third oil passage 103 extends to the second oil outlet of the oil filter 3 and is connected to the second oil outlet of the oil filter 3. The second end of the third oil passage 103 extends to the second oil inlet 401 of the oil cooler 4 and is connected to the second oil inlet 401 of the oil cooler 4.

[0061] The third oil passage 103 includes a first segment 1031 and a second segment 1032 that are connected to each other. The first segment 1031 and the second segment 1032 intersect. The second segment 1032 includes a main body segment and a bent segment. The main body segment preferably extends along the length direction of the cylinder block 1 and intersects with the first segment 1031. The bent segment is connected to the end of the main body segment away from the first segment 1031. The first end of the third oil passage 103 is also the end of the first segment 1031 away from the second segment 1032. The second end of the third oil passage 103 is also the end of the second segment 1032 away from the first segment 1031. The second end of the third oil passage 103 is also the end of the second segment 1032 where the bent segment is located. The end of the first segment 1031 away from the second segment 1032 is connected to the second oil outlet. The end of the second segment 1032 away from the first segment 1031 is connected to the second oil inlet 401.

[0062] A third sealing ring can be installed at the junction of the first end of the third oil passage 103 and the second oil outlet, and the third sealing ring can be installed on the oil filter 3. A fourth sealing ring can be installed at the junction of the second end of the third oil passage 103 and the second oil inlet 401, and the fourth sealing ring can be embedded in the fourth sealing ring groove opened on the cylinder block 1. In this embodiment, the first and second ends of the third oil passage 103 extend directly to the second oil outlet and the second oil inlet 401, which can reduce the arrangement of external oil passages.

[0063] Reference Figure 5 The end of the second oil passage 102 away from the main oil passage 104 extends to the third oil outlet 402 of the oil cooler 4 and is connected to the third oil outlet 402 of the oil cooler 4.

[0064] The oil cooler 4 also includes an oil passage that connects to a second oil inlet 401 and a third oil outlet 402. The second oil passage 102 preferably extends along the width direction of the cylinder block 1, which can be referenced from... Figure 3 The direction indicated by arrow C. A fifth sealing ring is provided at the junction of the second oil passage 102 and the third oil outlet 402. The fifth sealing ring can be fitted into the fifth sealing ring groove opened on the cylinder block 1. In this embodiment, the second oil passage 102 extends directly to the third oil outlet 402, which can reduce the arrangement of external oil passages.

[0065] In an optional embodiment of this utility model, reference is made to Figure 1 , Figure 4 and Figure 6 The engine lubrication system also includes a cooling pump 5 connected to the cylinder block 1, and the cooling pump 5 is connected to the oil cooler 4; the oil cooler 4 and the cooling pump 5 are located on the same side of the cylinder block 1.

[0066] The cooling pump 5 provides circulation power for the coolant flowing in the oil cooler 4. This cooling pump 5 can be a water pump, such as an electric water pump. In related technologies, the oil cooler is typically connected to components in the engine cooling system via external piping to circulate the coolant. However, the external piping connecting the oil cooler is relatively long and complex to arrange. In this embodiment, the oil cooler 4 and the cooling pump 5 are located on the same side of the cylinder block 1, which shortens the length of the piping connecting the cooling pump 5 and the oil cooler 4, reducing the complexity of the piping arrangement.

[0067] An electric water pump includes an electronically controlled drive structure that powers its operation. This drive structure can be an electric motor and can be electrically connected to the engine control unit. Unlike traditional mechanical water pumps that rely on an engine belt, electric water pumps are not limited by engine speed and can adjust flow rate according to actual needs.

[0068] In an optional embodiment of this invention, both the oil cooler 4 and the cooling pump 5 are connected to the intake side wall of the cylinder block 1. The intake side wall of the cylinder block 1 is the side wall located on the intake side of the cylinder block 1, and the intake side of the cylinder block 1 is the side where the cylinder block 1 connects to the intake system. The main oil passage 104 is located on the intake side of the cylinder block 1. In this embodiment, the oil cooler 4 and the main oil passage 104 are located on the same side, which shortens the length of the second oil passage 102 and facilitates a compact layout of the lubrication channels.

[0069] In an optional embodiment of the present invention, the oil cooler 4 has a coolant flow channel and a first liquid port and a second liquid port communicating with the coolant flow channel; the cooling pump 5 is connected to the first liquid port through a first coolant pipe 6, and the second liquid port is connected to a second coolant pipe 7; the first coolant pipe, the second coolant pipe and the oil cooler 4 are located on the same side of the cylinder block 1.

[0070] The coolant flow channel is used to supply coolant, which may include water. The end of the second coolant line 7 furthest from the oil cooler 4 can be connected to the thermostat assembly. The coolant flow path can be referenced... Figure 4 The dashed arrow indicates the path: coolant flowing from the thermostat assembly enters the oil cooler 4 through the second coolant line 7; coolant flowing from the oil cooler 4 is pumped into the coolant pump 5 through the first coolant line 6; and coolant pumped from the coolant pump 5 flows through the water channels within the cylinder block 1 back to the thermostat assembly, thus achieving coolant circulation. As an example, coolant in the water channels within the cylinder block 1 enters the oil cooler 4 through a bypass passage in the thermostat assembly and the second coolant line 7. Coolant flowing from the oil cooler 4 is pumped into the coolant pump 5 through the first coolant line 6, and then pumped by the coolant pump 5 into the water channels within the cylinder block 1, forming a small circulation loop. It should be noted that the bypass passage can be normally open.

[0071] In related technologies, the pipes connecting the oil cooler are arranged on multiple sides of the cylinder block, which occupies the limited space around the engine and affects the arrangement of other components. In this embodiment, the first coolant pipe 6 and the second coolant pipe 7 are arranged on only one side of the cylinder block 1, which is compact and can reduce the impact on the arrangement of other components and improve assemblability.

[0072] Reference Figure 6 When installing oil cooler 4, the oil flow path can be referenced. Figure 6 The path indicated by the dashed arrow shows the engine oil flowing through the third oil passage 103 to the oil cooler 4. After the oil cooler 4 cools the oil, it flows through the second oil passage 102 into the main oil passage 104. (See reference...) Figure 7 With minimal changes to the overall machine layout, the oil cooler 4 can be eliminated by altering the structure of the lubrication channels. After eliminating the oil cooler 4, the oil flowing from the oil filter 3 directly enters the main oil passage 104 through the oil passage. Only a cylinder block modification is required to change the structure of the lubrication channels, thus enabling switching between different machine model designs.

[0073] In an optional embodiment of this utility model, reference is made to Figure 3 , Figure 8 and Figure 9The lubrication system also includes a feedback oil passage 105. The oil pump 2 has a feedback port, and the feedback oil passage 105 is connected to the feedback port and the main oil passage 104. The feedback port and the first oil outlet 201 of the oil pump 2 are both located at the end of the oil pump 2 near the oil filter 3, and the distance between the feedback port and the first oil outlet 201 is less than the width of the oil pump 2. The first oil passage 101 and the feedback oil passage 105 are located at the same end of the cylinder block 1 along its length. Specifically, the first oil passage 101 and the feedback oil passage 105 are located at the front end of the cylinder block 1. The width direction of the oil pump 2 is consistent with the length direction of the cylinder block 1. The feedback port is adjacent to the first oil outlet 201. The distance between the feedback port and the first oil outlet 201 can be a safe distance, which can be set according to actual needs, for example, 5mm-15mm. In this embodiment, the feedback port is adjacent to the first oil outlet 201, and the oil pump 2 itself has a simple oil circuit layout, compact structure, and small size.

[0074] A portion of the oil in the main oil passage 104 can flow back to the oil pump 2 through the feedback oil passage 105. In other words, the function of the feedback oil passage 105 is to return a portion of the oil from the main oil passage 104 to the oil pump 2. The oil pump 2 may include a feedback oil chamber, a mechanical adjustment mechanism, and an electronic control valve. As an example, the electronic control valve is a switching valve used to control the connection between the feedback oil passage 105 and the feedback oil chamber. When the feedback oil passage 105 is connected to the feedback oil chamber, the mechanical adjustment mechanism can adjust the oil output flow rate of the oil pump 2 according to the pressure of the oil fed back from the feedback oil passage 105 to the feedback oil chamber, so that the oil pressure in the main oil passage 104 is always within a suitable range. As an example, the mechanical adjustment mechanism may include an outer adjusting ring and an adjusting spring. By sliding or swinging the outer adjusting ring, the eccentricity between the outer adjusting ring and the rotor can be changed. As another example, the electronic control valve is a proportional valve. In this case, the electronic control valve is used to control the connection between the feedback oil passage 105 and the feedback oil chamber and the flow rate of the oil fed back from the feedback oil passage 105 to the feedback oil chamber.

[0075] In an optional embodiment of this utility model, reference is made to Figure 8 and Figure 9 The feedback oil passage 105 includes a first sub-segment 1051, the end of which is away from the oil pump 2 extends to the side of the main oil passage 104 and is connected to the main oil passage 104.

[0076] The first sub-segment 1051, at its end furthest from the oil pump 2, extends to the side of the main oil passage 104 near the intake side wall of the cylinder block 1. The feedback oil passage 105 also includes a second sub-segment 1052 and a third sub-segment 1053. The second sub-segment 1052 is connected to the bottom of the first sub-segment 1051, and the third sub-segment 1053 is connected to the end of the second sub-segment 1052 furthest from the first sub-segment 1051. The third sub-segment 1053 extends to and communicates with the feedback oil port. The first sub-segment 1051 and the third sub-segment 1053 extend vertically, while the second sub-segment 1052 extends horizontally. When the lubrication passage includes the connecting oil passage 107, the end of the first sub-segment 1051 furthest from the oil pump 2 is specifically connected to the main oil passage 104 via the connecting oil passage 107. In this embodiment, the end of the first segment 1051 away from the oil pump 2 extends to the side of the main oil passage 104 and is connected to the main oil passage 104, so that the pressure change of the oil in the feedback oil chamber of the oil pump 2 fed back by the feedback oil passage 105 can more accurately reflect the pressure change of the main oil passage 104.

[0077] In an optional embodiment of this utility model, reference is made to Figure 10 The lubrication passage also includes a transverse oil passage 106, which is connected to the main oil passage 104. A piston cooling nozzle 8 is connected to the transverse oil passage 106. The main oil passage 104 and the transverse oil passage 106 are located on the intake side and exhaust side of the cylinder block 1, respectively.

[0078] The transverse oil passage 106 extends parallel to the length of the cylinder block 1. The piston cooling nozzle 8 sprays engine oil onto the piston in the engine. The exhaust side of the cylinder block 1 is the side where it connects to the exhaust system. Multiple branch oil passages can be connected to the transverse oil passage 106, and multiple piston cooling nozzles 8 are connected to these branch oil passages. In this embodiment, the piston cooling nozzle 8 is connected to an independent transverse oil passage 106, and is located on the exhaust side of the cylinder block 1, providing good cooling and lubrication for the piston.

[0079] In an optional embodiment of this utility model, reference is made to Figure 10 and Figure 11 The lubricating oil passage also includes a connecting oil passage 107, through which the main oil passage 104 is connected to the transverse oil passage 106; a control valve 9 that can be opened and closed is provided at the intersection of the connecting oil passage 107 and the transverse oil passage 106.

[0080] The extension direction of the connecting oil passage 107 is parallel to the width direction of the cylinder block 1, which can be referenced from... Figure 3The direction indicated by arrow C. The connecting oil passage 107 is specifically connected to the end of the main oil passage 104 near the feedback oil passage 105. Engine oil flowing through the main oil passage 104 enters the transverse oil passage 106, and then enters each piston cooling nozzle 8 through the transverse oil passage 106. The control valve 9 is specifically mounted on the cylinder block 1. As an example, the control valve 9 can be an on / off valve. As another example, the control valve 9 can be a proportional valve; in this case, by adjusting the opening of the control valve 9, the flow rate of the transverse oil passage 106 can be adjusted, thereby achieving controllable piston cooling. Furthermore, the control valve 9 also serves to seal the connecting oil passage 107, eliminating the need for additional sealing structures and simplifying the structure of the engine lubrication system.

[0081] It should be noted that in other embodiments, the transverse oil passage 106 can be omitted, and the piston cooling nozzle 8 can be installed on the main oil passage 104. In other embodiments, the transverse oil passage 106 can be located on the same side as the main oil passage 104. In other embodiments, the branch oil passage, piston cooling nozzle 8, control valve 9, and the mounting hole of control valve 9 on cylinder block 1 can be omitted to achieve a piston-no-cooling-nozzle solution. In other embodiments, sealing parts such as cup-shaped plugs, screw plugs, or sealing covers can be used to replace control valve 9 to switch to a conventional pressure piston cooling nozzle arrangement.

[0082] In an optional embodiment of this invention, the engine further includes a cylinder head 10, and the lubrication passage includes a cylinder head oil passage 108 communicating with a connecting oil passage 107. The cylinder head oil passage 108 is used to transfer engine oil to components arranged on the cylinder head 10 that require lubrication. The lubrication passage also includes a timing tensioner oil sump 109 communicating with the bottom of the cylinder head oil passage 108. The timing tensioner oil sump 109 is used to supply engine oil to the timing tensioner 12. The engine lubrication system may also include an oil dipstick assembly 11, which is used to detect the oil level in the oil pan.

[0083] Secondly, this utility model embodiment provides an engine that includes the engine lubrication system provided in the first aspect. Since the engine includes the aforementioned engine lubrication system, it also possesses the beneficial effects of the aforementioned engine lubrication system, which will not be elaborated further here.

[0084] Thirdly, the present invention provides a vehicle, which includes the engine lubrication system provided in the first aspect or the engine provided in the second aspect.

[0085] It should be noted that, in this document, relational terms such as "first" and "second" are used merely 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 apparatus 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 apparatus. 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 apparatus that includes that element.

[0086] It should be noted that when a component is described as "fixed to" another component, it can be directly on the other component or may have a component in between. When a component is considered "connected to" another component, it can be directly connected to the other component or may have a component in between. When a component is considered "set on" another component, it can be directly set on the other component or may have a component in between. The terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0087] The various embodiments in this specification are described in a related manner. Similar or identical parts between embodiments can be referred to mutually. Each embodiment focuses on describing the differences from other embodiments. In particular, the system embodiments are basically similar to the method embodiments, so the description is relatively simple; relevant parts can be referred to the descriptions of the method embodiments.

[0088] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model are included within the scope of protection of this utility model.

[0089] The engine lubrication system, engine, and vehicle provided by this utility model have been described in detail above. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand the structure and core idea of ​​this utility model. At the same time, for those skilled in the art, there will be changes in the specific implementation and application scope based on the idea of ​​this utility model. Therefore, the content of this specification should not be construed as a limitation of this utility model.

Claims

1. An engine lubrication system characterized by, Includes an oil pump (2), an oil filter (3), an oil cooler (4) connected to the cylinder block (1) of the engine, and a lubrication passage provided on the cylinder block (1), wherein the oil pump (2), the oil filter (3) and the oil cooler (4) are connected through the lubrication passage; The distance between the oil filter (3) and the oil pump (2) is less than the distance between the oil filter (3) and the oil cooler (4).

2. The engine lubrication system of claim 1, wherein, The oil pump (2) and the oil filter (3) are both connected to the bottom of the cylinder block (1), and the oil pump (2) and the oil filter (3) are both located at one end of the bottom of the cylinder block (1) along the length of the cylinder block (1).

3. The engine lubrication system of claim 1, wherein, The lubrication passage includes a main oil passage (104), a first oil passage (101), and a second oil passage (102). The oil pump (2) is connected to the oil filter (3) through the first oil passage (101). The oil filter (3) is connected to the oil cooler (4). The oil cooler (4) is connected to the main oil passage (104) through the second oil passage (102).

4. The engine lubrication system of claim 3, wherein, The lubricating oil passage also includes a third oil passage (103), and the oil filter (3) is connected to the oil cooler (4) through the third oil passage (103).

5. The engine lubrication system of claim 4, wherein, The first end of the first oil passage (101) extends to the first oil outlet of the oil pump (2) and is connected to the first oil outlet of the oil pump (2); the second end of the first oil passage (101) extends to the first oil inlet of the oil filter (3) and is connected to the first oil inlet of the oil filter (3). And / or, the first end of the third oil passage (103) extends to the second oil outlet of the oil filter (3) and is connected to the second oil outlet of the oil filter (3), and the second end of the third oil passage (103) extends to the second oil inlet of the oil cooler (4) and is connected to the second oil inlet of the oil cooler (4); And / or, the end of the second oil passage (102) away from the main oil passage (104) extends to the third oil outlet of the oil cooler (4) and is in communication with the third oil outlet of the oil cooler (4).

6. The engine lubrication system of any one of claims 1 to 5, wherein, It also includes a cooling pump (5) connected to the cylinder block (1), the cooling pump (5) being connected to the oil cooler (4); The oil cooler (4) and the cooling pump (5) are located on the same side of the cylinder block (1).

7. The engine lubrication system of claim 6, wherein The oil cooler (4) and the cooling pump (5) are both connected to the intake side wall of the cylinder block (1).

8. The engine lubrication system of claim 6, wherein, The oil cooler (4) has a coolant flow channel and a first liquid port and a second liquid port connected to the coolant flow channel; The cooling pump (5) is connected to the first liquid port through the first coolant pipeline (6), and the second liquid port is connected to the second coolant pipeline (7); The first coolant line (6), the second coolant line (7), and the oil cooler (4) are located on the same side of the cylinder block (1).

9. The engine lubrication system according to any one of claims 3 to 5, characterized in that, The lubricating oil passage also includes a feedback oil passage (105), the oil pump (2) has a feedback oil port, and the feedback oil passage (105) connects the feedback oil port and the main oil passage (104); The feedback port and the first oil outlet of the oil pump (2) are both located at the end of the oil pump (2) near the oil filter (3), and the distance between the feedback port and the first oil outlet is less than the width of the oil pump (2). The first oil passage (101) and the feedback oil passage (105) are located at the same end of the cylinder (1) along the length direction of the cylinder (1).

10. The engine lubrication system according to claim 9, characterized in that, The feedback oil passage (105) includes a first sub-segment (1051), the end of which extends away from the oil pump (2) to the side of the main oil passage (104) and is connected to the main oil passage (104).

11. The engine lubrication system according to any one of claims 3 to 5, characterized in that, The lubrication passage also includes a transverse oil passage (106), which is connected to the main oil passage (104), and a piston cooling nozzle (8) is connected to the transverse oil passage (106). The main oil passage (104) and the transverse oil passage (106) are located on the intake side and exhaust side of the cylinder block (1), respectively.

12. The engine lubrication system according to claim 11, characterized in that, The lubricating oil passage also includes a connecting oil passage (107), and the main oil passage (104) is connected to the transverse oil passage (106) through the connecting oil passage (107); A control valve that can be opened and closed is provided at the intersection of the connecting oil passage (107) and the transverse oil passage (106).

13. An engine, characterized in that, Includes the engine lubrication system as described in any one of claims 1 to 12.

14. A vehicle, characterized in that, Includes the engine lubrication system as described in any one of claims 1 to 12 or the engine as described in claim 13.

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