A dual-purpose lubrication system for engines

Abstract

This invention discloses a dual-purpose engine lubrication circuit, including a cylinder head, an oil filter, an engine block, and a gear chamber. A side oil passage is located on the front right side of the engine block, with a first oil filter connected to its distal end. A gear chamber is located at the front end of the side oil passage, and an oil pump chamber is located in the lower part of the gear chamber. A connecting oil passage connects the oil pump chamber and the side oil passage within the gear chamber. A second oil filter is located on the right side of the gear chamber, with the other end of the connecting oil passage connected to the second oil filter. A secondary connecting oil passage is also located within the gear chamber, with one end connected to the oil pump chamber and the other end connected to the second oil filter. This dual-purpose engine lubrication circuit is adaptable to both construction and agricultural machinery. The lubrication circuit can be manually and flexibly adjusted, allowing the engine to adapt to more working environments and improving its adaptability. Engines using this lubrication circuit exhibit stable friction work, resulting in stable oil pressure and reduced mechanical wear.

Description

Technical Field

[0001] This invention belongs to the field of engine technology, specifically relating to a dual-purpose lubrication circuit for engines. Background Technology

[0002] Off-road vehicles, such as agricultural machinery and construction machinery, have high power requirements, thus placing higher demands on engine lubrication and cooling.

[0003] Typically, an engine is equipped with a main oil passage to deliver engine oil to all components requiring lubrication. An oil filter is also installed on this main oil passage to filter the oil, removing impurities such as dust, metal particles, carbon deposits, and soot particles, thus protecting the engine. Because the oil passage layouts of agricultural machinery and construction machinery engines differ, the placement of the oil filter also differs. Therefore, existing engines cannot be adapted to operate in both models simultaneously, exhibiting poor compatibility and integration. If lubrication is not performed according to the specific working environment, the different operating conditions can easily lead to unstable oil pressure and friction, which can reduce engine performance, increase mechanical wear, and shorten engine life. Summary of the Invention

[0004] The purpose of this invention is to provide a dual-purpose lubrication circuit for engines, which solves the problems of existing engine lubrication circuits, such as single circuit, poor adaptability and integration, and unstable oil pressure and friction work under different operating conditions, which further reduce engine performance, increase mechanical wear and reduce engine life.

[0005] To solve the above technical problems, the present invention adopts the following technical solution:

[0006] A dual-purpose lubrication system for an engine includes a cylinder head and an oil filter. The oil filter includes a first oil filter and a second oil filter. The engine also includes an engine block and a gear chamber. A side oil passage is provided on the right front side of the engine block. The distal end of the side oil passage is connected to the first oil filter. A gear chamber is located at the front end of the side oil passage. An oil pump chamber is located in the lower part of the gear chamber. A connecting oil passage is provided in the gear chamber to connect the oil pump chamber and the side oil passage. A second oil filter is located on the right side of the gear chamber. The other end of the connecting oil passage is connected to the second oil filter. An auxiliary connecting oil passage is also provided in the gear chamber. One end of the auxiliary connecting oil passage is connected to the oil pump chamber, and the other end is connected to the second oil filter. An upper oil passage, a middle oil passage, and a lower oil passage are provided on the right front side of the engine block. The connecting oil passage is connected to the upper oil passage, the middle oil passage, and the lower oil passage, respectively.

[0007] Furthermore, the side oil passage is divided into a side oil inlet passage and a side oil outlet passage, with the side oil inlet passage located below the side oil outlet passage. The connecting oil passage is divided into a connecting oil inlet passage and a connecting oil outlet passage, with the connecting oil inlet passage connected to the side oil inlet passage and the connecting oil outlet passage connected to the side oil outlet passage. The other end of the connecting oil outlet passage of the connecting oil passage is connected to the second oil filter.

[0008] Furthermore, the connecting oil passage has an oil hole on its side wall, and a vertical oil guide groove is provided at the far end of the oil hole. The side wall of the oil guide groove has an oil hole that connects to the upper oil passage, the middle oil passage and the lower oil passage.

[0009] Furthermore, after the upper oil passage extends into the engine block, it forms two paths. One path extends longitudinally upward and is connected sequentially to the camshaft, cylinder head, and rocker arm shaft. The other path extends laterally and is connected sequentially to the timing idler gear and the fuel injection pump idler gear.

[0010] Furthermore, the oil passage extends into the engine block and connects to the first gear of the engine block.

[0011] Furthermore, the lower oil passage extends into the engine block and is connected to the second, third, and fourth gears of the engine block.

[0012] Furthermore, the gear chamber is provided with an oil unloading chamber, the second oil filter is provided with a pressure relief valve, the pressure relief valve is connected to the oil unloading chamber, and an oil return channel is provided below the lower oil passage on the right side of the front end of the engine block, the oil return channel is connected to the oil unloading chamber.

[0013] The beneficial effects achieved by this invention are:

[0014] This dual-purpose lubrication circuit for engines can be adapted to both construction and agricultural machinery. The lubrication circuit can be manually adjusted to suit different application scenarios and operating conditions, allowing the engine to adapt to a wider range of working environments and improving its adaptability. Engines using this lubrication circuit exhibit stable friction work, resulting in stable oil pressure and reduced mechanical wear. Furthermore, this lubrication circuit, combined with the gear chamber, boasts high integration, improving engine performance, reducing carbon buildup, and extending engine lifespan. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is the front view of the present invention;

[0017] Figure 2 yes Figure 1 Sectional view at point AA;

[0018] Figure 3 yes Figure 1 Sectional view at point BB;

[0019] Figure 4 yes Figure 1 Sectional view at CC;

[0020] Figure 5 yes Figure 1 Sectional view at point DD;

[0021] Figure 6 This is a top view of the present invention;

[0022] Figure 7 yes Figure 6 Sectional view at EE;

[0023] Figure 8 yes Figure 6 Sectional view at FF;

[0024] Figure 9 yes Figure 6 Sectional view at point GG.

[0025] Reference numerals in the attached diagram: 1. Engine block; 1-1. Side oil outlet passage; 1-2. Side oil inlet passage; 1-3. Middle oil passage; 1-4. Lower oil passage; 1-5. Return oil passage; 1-6. Suction oil passage; 1-7. Upper oil passage; 2. First oil filter; 3. Gear chamber; 3-1. Connecting oil outlet passage; 3-2. Connecting oil inlet passage; 3-3. Oil guide groove; 3-4. Secondary connecting oil passage; 3-5. Oil discharge chamber; 3-6. Oil pump passage; 3-7. Oil pump chamber; 4. Cylinder head; 5. Second oil filter; 6. Suction plate. Detailed Implementation

[0026] The following is a detailed description with reference to specific embodiments.

[0027] The present invention will be further described in detail below with reference to specific embodiments. It should be emphasized that the following description is merely exemplary and is not intended to limit the scope and application of the present invention.

[0028] like Figure 1-9As shown, a dual-purpose lubrication system for an engine includes an engine block 1, a gear chamber 3, a cylinder head 4, and an oil filter. Corresponding lubrication passages are formed within the engine block 1, gear chamber 3, and cylinder head 4. The oil filter includes a first oil filter 2 and a second oil filter 5. From the front view, the cylinder head 4 is located on top of the engine block 1, the first oil filter 2 is located on the left side of the engine block 1, the gear chamber 3 is located at the front end of the engine block 1, a side oil passage is provided on the right side of the front end of the engine block 1, the far end of the side oil passage is connected to the first oil filter 2, the front end of the side oil passage is in contact with the rear end of the gear chamber 3, the lower part of the gear chamber 3 is provided with an oil pump chamber 3-7, the gear chamber 3 has a connecting oil passage for the oil pump chamber 3-7 to connect with the side oil passage, the side oil passage is divided into a side oil inlet passage 1-2 and a side oil outlet passage 1-1, the side oil inlet passage 1-2 is located below the side oil outlet passage 1-1, the connecting oil passage is divided into a connecting oil inlet passage 3-2 and a connecting oil outlet passage 3-2, the connecting oil inlet passage 3-2 is connected to the side oil inlet passage 1-2, the connecting oil outlet passage 3-1 is connected to the side oil outlet passage 1-1; the other end of the connecting oil outlet passage 3-1 of the connecting oil passage is connected to the second oil filter 5.

[0029] A second oil filter 5 is provided on the right side of the gear chamber 3. The other end of the connecting oil passage is connected to the second oil filter. A secondary connecting oil passage 3-4 is also provided in the gear chamber 3. One end of the secondary connecting oil passage 3-4 is connected to the oil pump chamber 3-7, and the other end is connected to the second oil filter 5. An upper oil passage 1-7 is provided on the right side of the front end of the engine block 1 for lubricating the camshaft, cylinder head and rocker arm shaft. A middle oil passage 1-3 is used for lubricating the first gear. A lower oil passage 1-4 is used for lubricating the second, third and fourth gears. The connecting oil passages are connected to the upper oil passage 1-7, the middle oil passage 1-3 and the lower oil passage 1-4 respectively. More specifically, the connecting oil passage 3-1 has an oil hole on its side wall. A vertical oil guide groove 3-3 is provided at the far end of the oil hole. The side wall of the oil guide groove 3-3 has an oil hole connected to the upper oil passage 1-7, the middle oil passage 1-3 and the lower oil passage 1-4.

[0030] After the upper oil passage 1-7 extends into the engine block 1, it forms two passages. One passage extends longitudinally upward and connects sequentially with the camshaft, cylinder head 4, and rocker arm shaft. The other passage extends laterally and connects sequentially with the timing idler gear and the fuel injection pump idler gear.

[0031] The route of the oil circuit 1-3 is as follows: after the oil circuit 1-3 extends into the engine block 1, it is connected to the first gear of the engine block 1.

[0032] The route of the lower oil passage 1-4 is as follows: after the lower oil passage 1-4 extends into the engine block 1, it is connected to the second, third and fourth gears of the engine block.

[0033] The gear chamber 3 has an oil discharge chamber 3-5. The second oil filter 5 has a pressure relief valve connected to the oil discharge chamber 3-5 for oil pressure warning and stabilizing oil pressure. The lower oil passage 1-4 on the right side of the front end of the engine block 1 has a return oil passage 1-5 connected to the oil discharge chamber 3-5. The oil in the oil discharge chamber 3-5 enters the oil pan through the return oil passage 1-5.

[0034] The engine block 1 is also provided with an oil suction passage 1-6, and the gear chamber 3 is provided with an oil pump flow passage 3-6. The oil suction passage 1-6 and the oil pump flow passage 3-6 are connected. The inlet of the oil suction passage 1-6 is located at the bottom of the engine block 1, and the outlet is located at the front end of the engine block 1. The bottom of the engine block 1 is provided with an oil suction plate 6, which is connected to the inlet of the oil suction passage 1-6.

[0035] When operating as construction machinery, the auxiliary connecting oil passage 3-4 is closed, and the connecting oil passage and the side oil passage are connected. The oil suction plate 6 draws the oil from the oil pan into the gear chamber 3 through the oil pump. The oil sequentially enters the connecting oil inlet passage 3-2, the side oil inlet passage 1-2, the first oil filter 2, the side oil outlet passage 1-1, and the connecting oil outlet passage 3-1. Then, the oil enters the guide groove 3-3 through the oil hole on the side wall of the connecting oil outlet passage 3-1. Then, the oil enters the upper oil passage 1-7, the middle oil passage 1-3, and the lower oil passage 1-4 on the engine block 1 through several oil holes on the side wall of the guide groove 3-3.

[0036] When operating as agricultural machinery, the connecting oil inlet 3-2 is closed, and the secondary connecting oil inlet 3-4 is opened. The oil suction plate 6 draws the oil from the oil pan into the gear chamber 3 through the oil pump. The oil sequentially enters the secondary connecting oil inlet 3-4, the second oil filter 5, and the connecting oil outlet 3-1. Then, it enters the oil guide groove 3-3 through the oil hole on the side wall of the connecting oil outlet 3-1. Finally, the oil enters the upper oil passage 1-7, the middle oil passage 1-3, and the lower oil passage 1-4 on the engine block 1 through several oil holes on the side wall of the oil guide groove 3-3.

Claims

1. An engine dual lubricating oil passage including a cylinder head and an oil filter, the oil filter including a first oil filter and a second oil filter, characterized by: The engine body is provided with a side oil passage in the right front end, a first oil filter is connected to the distal end of the side oil passage, a gear chamber is arranged in the front end of the side oil passage, an oil pump chamber is arranged in the lower part of the gear chamber, a connecting oil passage is arranged in the gear chamber to connect the oil pump chamber and the side oil passage, a second oil filter is arranged in the right side of the gear chamber, the other end of the connecting oil passage is connected to the second oil filter, a sub connecting oil passage is further arranged in the gear chamber, one end of the sub connecting oil passage is connected to the oil pump chamber, and the other end is connected to the second oil filter, an upper oil passage, a middle oil passage and a lower oil passage are arranged in the right front end of the engine body, and the connecting oil passage is connected to the upper oil passage, the middle oil passage and the lower oil passage.

2. An engine dual-purpose lubricating oil passage according to claim 1, characterized in that: The side oil passage is divided into a side inlet oil passage and a side outlet oil passage, the side inlet oil passage is arranged below the side outlet oil passage, the connecting oil passage is divided into a connecting inlet oil passage and a connecting outlet oil passage, the connecting inlet oil passage is connected to the side inlet oil passage, and the connecting outlet oil passage is connected to the side outlet oil passage; the other end of the connecting outlet oil passage of the connecting oil passage is connected to the second oil filter.

3. An engine dual-purpose lubricating oil passage according to claim 2, characterized in that: The connecting outlet oil passage is provided with an oil hole in the side wall, a vertical oil guide groove is arranged in the distal end of the oil hole, and the side wall of the oil guide groove is provided with an oil hole connected to the upper oil passage, the middle oil passage and the lower oil passage.

4. An engine dual-purpose lubricating oil passage according to claim 1, characterized by: The upper oil passage extends into the engine body and forms two passages, one of which extends longitudinally upward and is sequentially connected to the camshaft, the cylinder head and the rocker shaft, and the other of which extends horizontally and is sequentially connected to the timing idler gear and the fuel pump idler gear.

5. An engine dual-purpose lubricating oil passage according to claim 1, characterized by: The middle oil passage extends into the engine body and is connected to the first gear of the engine body.

6. An engine dual-purpose lubricating oil passage according to claim 1, characterized by: The lower oil passage extends into the engine body and is connected to the second, third and fourth gears of the engine body.

7. An engine dual-purpose lubricating oil passage according to claim 1, characterized in that: The gear chamber is provided with a oil discharge cavity, a pressure relief valve is arranged in the second oil filter, the pressure relief valve is connected to the oil discharge cavity, and a return flow passage is arranged below the lower oil passage in the right front end of the engine body, and the return flow passage is connected to the oil discharge cavity.

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