An energy-saving horizontally opposed engine lubrication system

Abstract

The present invention relates to the field of engines, and specifically discloses an energy-saving horizontally opposed engine lubrication system, the engine includes a first cylinder and a second cylinder that are horizontally opposed, and the lubrication system includes: an oil supply system; a main oil passage connected to the oil supply system; including a first branch oil passage, a second branch oil passage and a third branch oil passage; a first lubricating portion connected to the first branch oil passage for lubricating the cylinder head portion of the first cylinder; a second lubricating portion connected to the second branch oil passage for lubricating the crankshaft portion; a third lubricating portion connected to the third branch oil passage for lubricating the cylinder head portion of the second cylinder; the first branch oil passage and the second branch oil passage are arranged oppositely and extend in a transverse direction respectively; the third branch oil passage includes an inclined third branch oil passage I and a third branch oil passage II extending in a transverse direction. The present invention can reduce the volume and cost of the engine.

Description

Technical Field

[0001] The invention relates to the field of engines, and in particular to an energy-saving horizontally opposed engine lubrication system. Background Art

[0002] In the engine, the lubrication system delivers lubricating oil to the oil-using parts of the engine, provides lubrication, appropriate temperature and appropriate pressure to the oil-using parts, cleans the oil-using parts, reduces wear loss, mechanical vibration and noise of moving parts; seals the gaps between parts; ensures the normal operation of each component and increases its service life.

[0003] At present, due to the large number of oil-using components inside the engine and their complex position distribution, the layout of the oil channels of the lubrication system is also very complicated. During the design process, the oil supply capacity of the oil pump of the lubrication system is designed based on the worst speed of the engine, which often leads to excessive oil supply of the oil pump when the engine is working normally. The complex oil channel structure will further increase the burden on the oil pump, causing the oil pump to be too large, thereby increasing the size of the engine, affecting the economy and lightweight requirements of the engine. Summary of the invention

[0004] In order to solve the technical problem that the engine volume increases due to the excessive burden on the oil pump, the present invention provides an energy-saving horizontally opposed engine lubrication system, and its specific technical solution is as follows.

[0005] An energy-saving horizontally opposed engine lubrication system, the engine comprising a first cylinder and a second cylinder which are horizontally opposed, the lubrication system comprising:

[0006] Oil supply system;

[0007] The main oil passage is connected to the oil supply system; it includes a first branch oil passage, a second branch oil passage and a third branch oil passage;

[0008] a first lubricating portion connected to the first branch oil passage and used for lubricating a cylinder head portion of the first cylinder;

[0009] A second lubricating portion, connected to the second branch oil passage, for lubricating the crankshaft portion;

[0010] a third lubrication portion connected to the third flow-dividing oil passage and used for lubricating a cylinder head portion of the second cylinder;

[0011] The first flow diversion passage and the second flow diversion passage are arranged opposite to each other and extend in the transverse direction respectively; the third flow diversion passage comprises an inclined third flow diversion passage I and a third flow diversion passage II extending in the transverse direction.

[0012] Furthermore, the oil supply system includes an oil pan, an oil filter, an oil pump and an oil filter; one end of the oil filter is connected to the oil pan, and the other end is connected to the oil pump; the oil pump is connected to the oil filter.

[0013] Furthermore, the first lubrication part includes:

[0014] A first connecting oil passage extends in a vertical direction and is connected to the first diverting oil passage through a first transition oil passage;

[0015] The first intake camshaft lubrication portion comprises a first oil inlet passage extending in a transverse direction and a first intake camshaft lubrication oil passage connected to the first oil inlet passage; the first oil inlet passage is connected to a first connecting oil passage;

[0016] The first exhaust camshaft lubrication portion comprises a second oil inlet passage extending in a transverse direction and a first exhaust camshaft lubrication oil passage connected to the second oil inlet passage; the second oil inlet passage is connected to a second connecting oil passage.

[0017] Furthermore, the second lubrication part includes:

[0018] A second connecting oil passage extends in the longitudinal direction and is connected to the second flow dividing oil passage through a second transition oil passage;

[0019] The first bearing lubrication part comprises a first main bearing lubrication oil passage and a first connecting rod big end bearing lubrication oil passage connected to the first main bearing lubrication oil passage; the first main bearing lubrication oil passage is connected to the second connecting oil passage;

[0020] A second bearing lubrication portion, comprising a second main bearing lubrication oil passage connected to the second connecting oil passage;

[0021] The third bearing lubrication part includes a third main bearing lubrication oil passage and a second connecting rod big end bearing lubrication oil passage connected to the third main bearing lubrication oil passage; the third main bearing lubrication oil passage is connected to the second connecting oil passage.

[0022] Further, the piston portion is splash lubricated by the first connecting rod big end bearing or the second connecting rod big end bearing.

[0023] Further, the third lubrication part includes:

[0024] A third connecting oil passage extends in a vertical direction and is connected to the third flow diversion oil passage II through a third transition oil passage;

[0025] The second intake camshaft lubrication portion includes a third oil inlet passage extending in the transverse direction and a second intake camshaft lubrication oil passage connected to the third oil inlet passage; the third oil inlet passage is connected to the third connecting oil passage;

[0026] The second exhaust camshaft lubrication portion includes a fourth oil inlet passage extending in a transverse direction and a second exhaust camshaft lubrication oil passage connected to the fourth oil inlet passage; the fourth oil inlet passage is connected to the third connecting oil passage.

[0027] Furthermore, the displacement of the oil pump is 0.002-0.006L / rev.

[0028] Furthermore, one end of the third flow-dividing oil passage II away from the third lubrication portion is connected to a first balancing shaft lubrication oil passage; and a first balancing shaft lubrication nozzle is provided on the first balancing shaft lubrication oil passage.

[0029] Furthermore, a second balance shaft lubrication nozzle is provided on the second connecting oil passage.

[0030] Furthermore, each oil passage is integrated into the engine casing.

[0031] Beneficial effects: 1. In the energy-saving horizontally opposed engine lubrication system provided by the present invention, most of the oil passages are arranged in a transverse extension or longitudinal extension manner; the flow direction of the lubricating oil in the transversely extended or longitudinally extended oil passages is horizontal, which reduces the power loss caused by gravity during the lubricating oil transportation process, thereby reducing the burden on the oil pump; thereby, a small-displacement oil pump can be used to reduce the engine size and cost.

[0032] 2. The energy-saving horizontally opposed engine lubrication system provided by the present invention utilizes the lubricating oil overflowing from the connecting rod big end bearing to lubricate the piston by splash lubrication, thereby reducing components such as nozzles that consume more oil, further reducing the burden on the oil pump, and thus further reducing the size and cost of the engine.

[0033] 3. The energy-saving horizontally opposed engine lubrication system provided by the present invention has a more ingenious design of the lubrication pipeline of the cylinder head part directly connected to the first cylinder through the first branch oil channel, with a simple pipeline structure, small loss along the way and higher lubrication efficiency.

[0034] 4. The energy-saving horizontally opposed engine lubrication system provided by the present invention arranges most of the oil channels to extend laterally or longitudinally so that the lubricating oil flows in a horizontal direction. Due to the effect of gravity, bubbles will float to the wall of the oil channel during the flow, thereby reducing the bubbles entering the lubricated part and improving the lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 This is one of the structural diagrams of the lubrication system;

[0036] Figure 2 The second structural diagram of the lubrication system (the oil pump is not shown in this figure);

[0037] Figure 3 is a structural schematic diagram of the first lubrication part;

[0038] Figure 4 is a structural schematic diagram of the second lubrication part;

[0039] Figure 5 It is a schematic structural diagram of the third lubrication part.

[0040] Figure numerals: 1, oil pan; 2, oil filter; 3, oil pump; 4, oil filter; 5, main oil channel; 6, first lubrication part; 7, second lubrication part; 8, third lubrication part; 51, first bypass oil channel; 52, second bypass oil channel; 53, third bypass oil channel I; 54, third bypass oil channel II; 61, first connecting oil channel; 62, first transition oil channel; 63, first oil inlet channel; 64, first intake camshaft lubrication oil channel; 65, second oil inlet channel; 66, first exhaust camshaft lubrication oil channel; 71, second connecting oil channel; 72, second transition oil channel; 73, the first main bearing lubricating oil channel; 74, the first connecting rod big end bearing lubricating oil channel; 75, the second main bearing lubricating oil channel; 76, the third main bearing lubricating oil channel; 77, the second connecting rod big end bearing lubricating oil channel; 81, the third connecting oil channel; 82, the third transition oil channel; 83, the third oil inlet channel; 84, the second intake camshaft lubricating oil channel; 85, the fourth oil inlet channel; 86, the second exhaust camshaft lubricating oil channel; 91, the first balance shaft lubricating nozzle; 92, the second balance shaft lubricating nozzle; 93, the first balance shaft lubricating oil channel; 100, the hydraulic tensioner oil channel. DETAILED DESCRIPTION

[0041] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of this application.

[0042] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance; in addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] Example

[0044] This embodiment provides an energy-saving horizontally opposed engine lubrication system. The lubrication object of the lubrication system in this embodiment is a horizontally opposed engine, which includes a first cylinder and a second cylinder that are horizontally opposed. Figure 1 As shown, the lubrication system includes an oil supply system, a main oil gallery 5 , a first lubrication portion 6 , a second lubrication portion 7 and a third lubrication portion 8 .

[0045] Specifically, refer to Figure 1 As shown, the oil supply system includes an oil pan 1, an oil filter 2, an oil pump 3 and an oil filter 4; the oil pan 1 is located below the cylinder block and the cylinder head, and is used to recover and store lubricating oil; one end of the oil filter 2 extends into the oil pan 1 and is connected to the oil pan 1, and the other end is connected to the oil pump 3, and the oil filter 2 performs coarse filtering on the lubricating oil, and the oil pump 3 is connected to the oil filter 4, and the oil filter 4 performs fine filtering on the lubricating oil again and then delivers it to the main oil channel 5.

[0046] Specifically, refer to Figure 1 and Figure 2 As shown, the main oil passage 5 includes a first diverter oil passage 51, a second diverter oil passage 52 and a third diverter oil passage, wherein the first diverter oil passage 51 and the second diverter oil passage 52 are arranged opposite to each other and extend in the transverse direction respectively; the third diverter oil passage includes an inclined third diverter oil passage I 53 and a third diverter oil passage II 54 extending in the transverse direction; the third diverter oil passage I 53 is connected to the third diverter oil passage II 54. The first diverter oil passage 51, the second diverter oil passage 52 and the third diverter oil passage II 54 extend in the transverse direction respectively, which reduces the power loss caused by gravity during the flow of lubricating oil.

[0047] Specifically, refer to Figure 3 As shown, the first lubricating portion 6 includes a first connecting oil passage 61, a first intake camshaft lubricating portion and a first exhaust camshaft lubricating portion. The first connecting oil passage 61 extends in the vertical direction and is connected to the first flow-dividing oil passage 51 through the first transition oil passage 62. The first intake camshaft lubricating portion includes a first oil inlet passage 63 extending in the transverse direction and a first intake camshaft lubricating oil passage 64 connected to the first oil inlet passage 63; the first oil inlet passage 63 is connected to the first connecting oil passage 61. The first exhaust camshaft lubricating portion includes a second oil inlet passage 65 extending in the transverse direction and a first exhaust camshaft lubricating oil passage 66 connected to the second oil inlet passage 65; the second oil inlet passage 65 is connected to the second connecting oil passage 71. The lubricating oil flows from the first flow-dividing oil passage 51 to the first connecting oil passage 61, and then flows to the first oil inlet passage 63 and the second oil inlet passage 65 respectively. The first intake camshaft lubricating oil passage 64 lubricates the first intake camshaft, and the first exhaust camshaft lubricating oil passage 66 lubricates the first exhaust camshaft. The first oil inlet passage 63 and the second oil inlet passage 65 both extend in the lateral direction, further reducing the power loss caused by gravity during the flow of the lubricating oil.

[0048] Specifically, refer to Figure 4As shown, the second lubrication part 7 includes a second connecting oil passage 71, a first bearing lubrication part, a second bearing lubrication part, and a third bearing lubrication part. The second connecting oil passage 71 extends in the longitudinal direction and is connected to the second diversion oil passage 52 through the second transition oil passage 72. The first bearing lubrication part includes a first main bearing lubrication oil passage 73 and a first connecting rod big end bearing lubrication oil passage 74 connected to the first main bearing lubrication oil passage 73; the first main bearing lubrication oil passage 73 is connected to the second connecting oil passage 71, the first main bearing lubrication oil passage 73 lubricates the first main bearing, and the first connecting rod big end bearing lubrication oil passage 74 lubricates the first connecting rod big end bearing. The second bearing lubrication part includes a second main bearing lubrication oil passage 75 connected to the second connecting oil passage 71, and the second main bearing lubrication oil passage 75 lubricates the second main bearing. The third bearing lubrication part includes a third main bearing lubricating oil passage 76 and a second connecting rod big end bearing lubricating oil passage 77 connected to the third main bearing lubricating oil passage 76; the third main bearing lubricating oil passage 76 is connected to the second connecting oil passage 71, and the third main bearing is lubricated by the third main bearing lubricating oil passage 76, and the second connecting rod big end bearing is lubricated by the second connecting rod big end bearing lubricating oil passage 77. The lubricating oil flows from the second branch oil passage 52 into the second connecting oil passage 71, and then flows to the first main bearing lubricating oil passage 73, the second main bearing lubricating oil passage 75 and the third main bearing lubricating oil passage 76 respectively; the lubricating oil in the first main bearing lubricating oil passage 73 flows to the first connecting rod big end bearing lubricating oil passage 74, and the lubricating oil in the third main bearing lubricating oil passage 76 flows to the second connecting rod big end bearing lubricating oil passage 77. The second connecting oil passage 71 extending in the longitudinal direction reduces the power loss caused by gravity during the flow of the lubricating oil.

[0049] In this embodiment, when lubricating the piston, the splashing lubricating oil during the lubrication of the first connecting rod big end bearing or the second connecting rod big end bearing is used to splash lubricate the piston, avoiding the use of oil spray nozzles, reducing oil-consuming components, further reducing the burden of the oil pump 3, and reducing the size and cost of the engine. Specifically, in this embodiment, the theoretical displacement of the oil pump 3 when designed only needs to be 0.0059L / rev.

[0050] Specifically, refer to Figure 5As shown, the third lubricating portion 8 includes a third connecting oil passage 81, a second intake camshaft lubricating portion, and a second exhaust camshaft lubricating portion. The third connecting oil passage 81 extends in the vertical direction and is connected to the third flow-dividing oil passage through the third transition oil passage 82. The second intake camshaft lubricating portion includes a third oil inlet passage 83 extending in the transverse direction and a second intake camshaft lubricating oil passage 84 connected to the third oil inlet passage 83; the third oil inlet passage 83 is connected to the third connecting oil passage 81; the second intake camshaft lubricating oil passage 84 lubricates the second intake camshaft. The second exhaust camshaft lubricating portion includes a fourth oil inlet passage 85 extending in the transverse direction and a second exhaust camshaft lubricating oil passage 86 connected to the fourth oil inlet passage 85; the fourth oil inlet passage 85 is connected to the third connecting oil passage 81; the second exhaust camshaft lubricating oil passage 86 lubricates the second exhaust camshaft. The lubricating oil flows into the third connecting oil passage 81 through the third flow-dividing oil passage II54, and then flows into the second intake camshaft lubricating oil passage 84 and the second exhaust camshaft wheel sliding oil passage respectively. The third oil inlet passages 83 and 83 both extend in the lateral direction, further reducing the power loss caused by gravity during the flow of the lubricating oil.

[0051] In the embodiment, a first balancing shaft lubricating nozzle 91 and a second balancing shaft lubricating nozzle 92 for lubricating the balancing shaft are also included. Specifically, a first balancing shaft lubricating oil passage 93 is connected to one end of the third flow oil passage II 54 away from the third lubricating portion 8; the first balancing shaft lubricating nozzle 91 is disposed on the first balancing shaft lubricating oil passage 93. The second balancing shaft lubricating nozzle 92 is disposed on the second connecting oil passage 71.

[0052] In this embodiment, each oil passage is integrated inside the engine housing, and no additional pipelines are required.

[0053] In this embodiment, the third flow branch oil passage II 54 is connected to a hydraulic tensioner oil passage 100 extending in the longitudinal direction for supplying oil to the hydraulic tensioner.

[0054] The lubrication system provided in this embodiment reduces the power loss caused by gravity during the lubricating oil transportation process by arranging a large number of oil passages extending in the transverse direction and in the longitudinal direction, thereby reducing the burden on the oil pump 3, so that a small-displacement oil pump 3 can be used, reducing the size and cost of the engine. In addition, before the lubricating oil flows to the oil-using parts that need to be lubricated, it first passes through the oil passages arranged in the transverse direction or in the longitudinal direction for a long time, so that the lubricating oil first flows in the horizontal direction. Due to the effect of gravity, bubbles will float to the wall of the oil passage during the flow process, reducing the bubbles entering the lubricated part and improving the lubrication effect.

[0055] In addition, the lubrication system provided in this embodiment reduces the complex oil circuit structure and uses the cylinder block and cylinder head to integrate the oil circuit. It has a simple structure, high integration, and small space dimensions, so that the engine meets the requirements of economy and lightweight.

[0056] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For those skilled in the art of the present invention, several equivalent substitutions or obvious variations can be made without departing from the concept of the present invention, and the performance or use is the same, which should be regarded as belonging to the protection scope of the present invention.

Claims

1. An energy-saving horizontally opposed engine lubrication system, the engine comprising a first cylinder and a second cylinder horizontally opposed, characterized in that: The lubrication system includes: Oil supply system; The main oil passage (5) is connected to the oil supply system; it includes a first branch oil passage (51), a second branch oil passage (52) and a third branch oil passage; A first lubricating portion (6) connected to the first branch oil passage (51) and used for lubricating a cylinder head portion of the first cylinder; A second lubricating portion (7) connected to the second flow-dividing oil passage (52) and used for lubricating the crankshaft portion; A third lubricating portion (8), connected to the third flow-dividing oil passage, for lubricating a cylinder head portion of the second cylinder; The first flow diversion passage (51) and the second flow diversion passage (52) are arranged opposite to each other and extend in the transverse direction respectively; the third flow diversion passage comprises a third flow diversion passage I (53) arranged obliquely and a third flow diversion passage II (54) extending in the transverse direction; The first lubrication part (6) comprises: A first connecting oil passage (61) extending in a vertical direction and connected to the first diverting oil passage (51) via a first transition oil passage (62); The first intake camshaft lubrication portion comprises a first oil inlet passage (63) extending in a transverse direction and a first intake camshaft lubrication oil passage (64) connected to the first oil inlet passage (63); the first oil inlet passage (63) is connected to a first connecting oil passage (61); The first exhaust camshaft lubrication portion comprises a second oil inlet passage (65) extending in a transverse direction and a first exhaust camshaft lubrication oil passage (66) connected to the second oil inlet passage (65); the second oil inlet passage (65) is connected to a second connecting oil passage (71); The second lubrication part (7) comprises: A second connecting oil passage (71) extending in the longitudinal direction and connected to the second flow dividing oil passage (52) via a second transition oil passage (72); The first bearing lubrication part comprises a first main bearing lubrication oil passage (73) and a first connecting rod big end bearing lubrication oil passage (74) connected to the first main bearing lubrication oil passage (73); the first main bearing lubrication oil passage (73) is connected to the second connecting oil passage (71); A second bearing lubrication portion, comprising a second main bearing lubrication oil passage (75) connected to the second connecting oil passage (71); The third bearing lubrication part comprises a third main bearing lubrication oil passage (76) and a second connecting rod big end bearing lubrication oil passage (77) connected to the third main bearing lubrication oil passage (76); the third main bearing lubrication oil passage (76) is connected to the second connecting oil passage (71); The third lubrication part (8) comprises: A third connecting oil passage (81) extending in a vertical direction and connected to the third flow dividing oil passage II (54) through a third transition oil passage (82); The second intake camshaft lubrication portion comprises a third intake oil passage (83) extending in a transverse direction and a second intake camshaft lubrication oil passage (84) connected to the third intake oil passage (83); the third intake oil passage (83) is connected to a third connecting oil passage (81); The second exhaust camshaft lubrication portion comprises a fourth oil inlet passage (85) extending in a transverse direction and a second exhaust camshaft lubrication oil passage (86) connected to the fourth oil inlet passage (85); the fourth oil inlet passage (85) is connected to the third connecting oil passage (81).

2. The energy-saving horizontally opposed engine lubrication system according to claim 1, characterized in that: The oil supply system comprises an oil pan (1), an oil filter (2), an oil pump (3) and an oil filter (4); one end of the oil filter (2) is connected to the oil pan (1), and the other end is connected to the oil pump (3); the oil pump (3) is connected to the oil filter (4).

3. The energy-saving horizontally opposed engine lubrication system according to claim 1, characterized in that: The piston part is splash lubricated by the first connecting rod big end bearing or the second connecting rod big end bearing.

4. The energy-saving horizontally opposed engine lubrication system according to claim 2, characterized in that: The displacement of the oil pump (3) is 0.002-0.006 L / rev.

5. The energy-saving horizontally opposed engine lubrication system according to claim 1, characterized in that: One end of the third flow-dividing oil passage II (54) away from the third lubricating portion (8) is connected to a first balancing shaft lubricating oil passage (93); a first balancing shaft lubricating nozzle (91) is provided on the first balancing shaft lubricating oil passage (93).

6. The energy-saving horizontally opposed engine lubrication system according to claim 1, characterized in that: The second connecting oil passage (71) is provided with a second balancing shaft lubrication nozzle (92).

7. An energy-saving horizontally opposed engine lubrication system according to any one of claims 1 to 6, characterized in that: The oil passages are respectively integrated in the engine casing.

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