Engine pressure lubrication system and engine

Abstract

The utility model discloses an engine pressure lubricating system and an engine, a pressure oil duct adopts a sectional design, the flowing path of lubricating oil is optimized, and meanwhile, the oil outlet direction of an oil outlet of a third oil duct inclines upwards by a set angle, so that the spraying area is increased, the lubricating efficiency is improved, and the service life of the engine is prolonged; the lubricating oil fine filter mounting seat is integrally formed on the crankcase cover, so that the mounting process is simplified, the mounting difficulty is reduced, and the mounting cost is reduced; the outlet end of the oil discharging pipe is clamped on the engine crankshaft box body through the oil pipe clamp, the oil discharging pipe is taken down during oil discharging to achieve oil discharging, operation is simple, and the oil discharging pipe is not prone to deformation. The first balance shaft and the second balance shaft are arranged on the lower left side and the lower right side of the crankshaft respectively and arranged in an equilateral triangle shape, meanwhile, power is input to the lubricating oil pump through the first balance shaft, the driving mode is optimized, vibration is reduced, and noise is lowered.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of engine, especially a kind of engine pressure lubrication system and engine. BACKGROUND

[0002] Engine crankcase cover is an important component of engine, and the existing engine lubricating oil pump is usually arranged in the crankcase cover. The lubricating oil pump is an important component of the engine lubrication system, which functions to force lubricating oil to the surface of each part of the engine for lubrication after being lifted to a certain pressure.

[0003] Traditional engines generally use a mechanical camshaft to drive the lubricating oil pump. The drive gear on the camshaft drives the transmission gear of the lubricating oil pump to rotate, thereby achieving lubrication. Meanwhile, the mounting seat of the lubricating oil fine filter is split type and fixed to the crankcase cover by bolts. This design has high stability and flexibility, but also has many shortcomings, such as more transmission components of the transmission mechanism on the camshaft, which increases the overall complexity of the engine, increases energy loss in the transmission process, and increases manufacturing cost. Good sealing performance is required between the mounting seat and the crankcase cover, as well as between the lubricating oil fine filter and the mounting seat, which increases installation difficulty and labor cost. In some engine pressure lubrication systems, a single pressure oil passage design can easily lead to uneven distribution of lubricating oil and low lubrication efficiency, increasing friction and wear between components and shortening the service life.

[0004] Therefore, it is necessary to improve the existing engine pressure lubrication system. Not only can the flow path and spraying method of lubricating oil be optimized to reduce the wear of components in the engine, improve lubrication efficiency, and prolong the service life of the engine, but also the installation process can be simplified, the installation difficulty can be reduced, and the production cost and labor cost can be reduced. SUMMARY

[0005] In view of the shortcomings of the current engine pressure lubrication system, the purpose of the utility model is to provide an engine pressure lubrication system and an engine. Not only can the flow path and spraying method of lubricating oil be optimized to reduce the wear of components in the engine, improve lubrication efficiency, and prolong the service life of the engine, but also the installation process can be simplified, the installation difficulty can be reduced, and the production cost and labor cost can be reduced.

[0006] To achieve the purpose of the utility model, the utility model provides an engine pressure lubrication system, which comprises a pressure oil passage, a lubricating oil pump for delivering lubricating oil to the pressure oil passage, and a lubricating oil fine filter located on the pressure oil passage. The power of the lubricating oil pump is input by the balance shaft of the engine.

[0007] The pressure oil passage is a sectional oil passage, comprising a first oil passage connected to the outlet of the lubricating oil pump, a second oil passage connected to the outlet of the lubricating oil filter, and a third oil passage connected to the second oil passage.

[0008] Further, the lubricating oil filter is detachably fixed to the engine crankcase cover.

[0009] Further, the lubricating oil filter mounting seat for mounting the lubricating oil filter is integrally formed on the crankcase cover.

[0010] Further, the lubricating oil filter is mounted on the lubricating oil filter mounting seat through a hollow bolt, and the hollow bolt establishes communication with the pressure oil passage.

[0011] Further, the hollow bolt is an oil outlet passage for the lubricating oil filtered by the lubricating oil filter.

[0012] Further, the oil outlet direction of the oil outlet of the third oil passage is upwardly inclined at a set angle.

[0013] The engine of the utility model, comprising the engine pressure lubrication system.

[0014] Further, the crankshaft and the balance shaft are further included, the balance shaft comprises a first balance shaft and a second balance shaft, and the first balance shaft and the second balance shaft are arranged on the left lower side and the right lower side of the crankshaft and arranged in an equilateral triangle shape.

[0015] The power of the lubricating oil pump is input by the first balance shaft.

[0016] Further, the drain pipe is further included, the inlet end of the drain pipe is communicated with the oil drain port of the crankcase cover, the outlet end is clamped upwardly on the oil pipe clamp arranged on the engine crankcase body, and the drain pipe is removed from the clamped position to realize oil draining during oil draining.

[0017] The utility model discloses a kind of engine pressure lubrication systems and engines, and pressure oil passage adopts sectional design, optimizes the flow path of lubricating oil, while the oil outlet direction of the oil outlet of third oil passage is upwardly inclined at a set angle, increase spraying area, improve lubrication efficiency, prolong the service life of engine;Lubricating oil filter mounting seat is integrally formed on the crankcase cover, simplify installation process, reduce installation difficulty, reduce installation cost;Drain pipe outlet end is clamped on engine crankcase body by oil pipe clamp, and drain pipe is removed to realize oil draining during oil draining, simple operation, and drain pipe is not easy to deform;First balance shaft and second balance shaft are arranged on the left lower side and the right lower side of the crankshaft and arranged in an equilateral triangle shape, and power is input to lubricating oil pump by first balance shaft, optimize driving mode, reduce vibration, reduce noise. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model;

[0019] Figure 2 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model; Figure 1 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model;

[0020] Figure 3 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model;

[0021] Figure 4 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model;

[0022] Figure 5 Figure 1 is a longitudinal sectional view of the engine pressure lubrication system of the utility model.

[0023] Reference signs: 1, pressure oil passage; 101, first oil passage; 102, second oil passage; 103, third oil passage; 2, lubricating oil pump; 3, lubricating oil fine filter; 4, crankcase cover; 5, lubricating oil fine filter mounting seat; 6, hollow bolt; 7, oil drain pipe; 8, crankcase body; 9, oil pipe clamp; 10, crankshaft; 11, balance shaft; 1101, first balance shaft; 1102, second balance shaft. DETAILED DESCRIPTION

[0024] The utility model is further explained as follows. Figures 1-5 The utility model is further explained as follows.

[0025] The utility model discloses an engine pressure lubrication system, including pressure oil channel 1, the lubricating oil pump 2 of lubricating oil delivery to pressure oil channel 1 and the lubricating oil fine filter 3 on pressure oil channel 1, the power of lubricating oil pump 2 is by the balance shaft of engine input, the balance shaft is the component for offsetting the vibration of piston movement on engine, usually through gear or chain direct from the balance shaft power takeoff drive lubricating oil pump 2, need not additional setting motor or belt pulley etc. Independent drive arrangement, reduce engine volume and weight, promote compactness, here no longer tediously repeat; Lubricating oil pump 2 when engine operation, the lubricating oil in oil sump is inhaled into lubricating oil pump 2, then lubricating oil is forced to export through oil outlet under the extrusion of gear, guarantee lubricating oil can circulate in whole lubrication system, provide necessary lubrication guarantee for each part of engine, the lubricating oil fine filter 3 can carry out fine filtration to lubricating oil, when engine operation, lubricating oil will mix in metal scrap or dust etc. Impurity, the lubricating oil fine filter 3 can effectively intercept these impurities, let clean lubricating oil enter each part of engine, prolong the service life of engine, make engine operation more stable, through the synergistic effect of lubricating oil pump 2 and pressure oil channel 1, can provide stable pressure for lubricating oil fine filter 3, guarantee that the lubricating oil after fine filtration can be sprayed to the part needing lubrication with suitable pressure and flow, form uniform oil film, improve lubrication effect, reduce the wear and tear and friction of engine internal parts, reduce the heat generated due to friction, avoid the damage of part due to overheating;

[0026] The pressure oil channel 1 is a segmented oil channel, comprising a first oil channel 101 connected to the outlet of the lubricating oil pump 2, a second oil channel 102 connected to the outlet of the lubricating oil fine filter 3, and a third oil channel 103 connected to the second oil channel 102. The inlet of the first oil channel 101 is connected to the outlet of the lubricating oil pump 2, and the outlet is connected to the inlet of the lubricating oil fine filter 3. This direct connection method can accurately deliver the lubricating oil output by the lubricating oil pump 2 to the lubricating oil fine filter 3. Compared with the single oil channel design, it can avoid problems such as uneven distribution of lubricating oil and inconsistent pressure loss when the lubricating oil flows in complex pipelines, ensuring that the lubricating oil fine filter 3 can obtain stable and sufficient lubricating oil supply to ensure normal operation.

[0027] In the embodiment, the lubricating oil fine filter 3 is detachably fixed to the engine crankcase cover 4, and the lubricating oil fine filter 3 is directly fixed to the crankcase cover 4 through a detachable structure such as threads, buckles or flanges. During maintenance, only the fixing bolts or the filter core shell need to be unscrewed, and the filter core or the lubricating oil fine filter 3 body can be replaced separately, without the need to disassemble other parts of the engine, which is convenient to operate and improves the maintenance efficiency. The lubricating oil fine filter 3 is fixed to the crankcase cover 4 as an independent module, and different specifications of lubricating oil fine filter 3 bodies or installation interfaces can be replaced to quickly adapt to different displacements or models of the same series of engines, thereby reducing the research and development costs and manufacturing costs. The crankcase cover 4 is usually provided with a main oil passage branch, and the lubricating oil fine filter 3 is directly installed on the crankcase cover 4, which can shorten the path of lubricating oil from the oil passage to the lubricating oil fine filter 3, reduce the pressure loss along the path, and avoid the risk of oil leakage or rupture of the long pipeline due to vibration. This design can also directly add an oil pressure sensor, a blockage alarm switch or a bypass valve to the lubricating oil fine filter 3. These accessories are connected through the reserved interfaces of the crankcase cover 4, without the need to modify the main structure of the engine, thereby improving the intelligence and safety of the engine pressure lubrication system. If the lubricating oil fine filter 3 needs to be repaired due to impurity blockage or filter core damage, the detachable design allows the lubricating oil fine filter 3 to be replaced separately, thereby avoiding damage to the engine body, and details are not described herein.

[0028] In the embodiment, the crankcase cover 4 is integrally formed with a lubricating oil fine filter mounting seat 5 for mounting the lubricating oil fine filter 3. The integrally formed design avoids additional mounting brackets or connecting members, so that the lubricating oil fine filter 3 can be directly mounted on the crankcase cover 4, thereby saving the space inside the engine, making the overall structure more compact, and improving the space utilization. The lubricating oil fine filter mounting seat 5 is integrally formed with the crankcase cover 4, thereby reducing the number of parts and connection links during installation. During installation, the lubricating oil fine filter 3 is directly mounted on the corresponding lubricating oil fine filter mounting seat 5, without the need for complex positioning and connection operations, thereby reducing the installation difficulty, reducing the production cost and labor cost, improving the assembly efficiency, reducing the risk of failure caused by improper installation, and the integrally formed structure does not have a connection gap between the lubricating oil fine filter mounting seat 5 and the crankcase cover 4, thereby reducing the possibility of lubricating oil leakage from the connection. The integrally formed design makes the crankcase cover 4 and the lubricating oil fine filter mounting seat 5 form an integral structure, thereby increasing the rigidity of the crankcase cover 4, which helps to reduce the vibration and deformation of the crankcase cover 4 during engine operation, improves the fatigue resistance, prolongs the service life, and the increase in the rigidity of the crankcase cover 4 also helps to reduce the noise and vibration of the engine.

[0029] In the embodiment, the lubricating oil filter 3 is installed on the lubricating oil filter mounting seat 5 through a hollow bolt 6, and is in communication with the pressure oil channel 1 through the hollow bolt 6. The hollow bolt 6 is internally processed with a through oil channel, such as a through hole with a set diameter. The filtered lubricating oil can directly flow into the second oil channel 102 through the inside of the hollow bolt 6, without the need for additional complex external oil pipes to realize connection, thereby reducing the number and length of pipelines in the oil circuit system, making the structure of the entire lubricating system more compact and simple, reducing the complexity of the system, reducing production costs, and also reducing the risk of leakage due to the increase in pipeline connection points. The lubricating oil filter 3 is directly fixed in the corresponding threaded hole of the lubricating oil filter mounting seat 5 through the hollow bolt 6, and only a wrench is needed to complete disassembly and assembly. Compared with the traditional multi-bolt fixing or flange connection method, the assembly time is shortened and the assembly efficiency is improved. The lubricating oil filter 3 is directly connected to the lubricating oil filter mounting seat 5 through the hollow bolt 6, without the need for additional supports or support structures. The overall axial size is reduced by 40%-60% compared with the split type pipeline connection in the prior art, is suitable for narrow installation space, and also reduces installation costs, which will not be described here.

[0030] In the embodiment, the hollow bolt 6 is a lubricating oil outlet channel of the lubricating oil filter 3. The hollow bolt 6 is used as a lubricating oil outlet channel of the lubricating oil filter 3, without the need for additional lubricating oil outlet channels, thereby realizing compact design and reducing production costs, which will not be described here. This design fully utilizes the internal space of the hollow bolt 6, avoids occupying additional space for connecting the second oil channel 102 and the lubricating oil filter 3, and improves space utilization. During installation, the hollow bolt 6 is only needed to be installed at the corresponding position of the lubricating oil filter 3 and connected with the second oil channel 102, thereby simplifying the installation process, improving the installation efficiency, and facilitating maintenance and repair.

[0031] In the embodiment, the outlet direction of the outlet of the third oil channel 103 is upwardly inclined at a set angle. That is, the outlet direction of the outlet of the third oil channel 103 forms a set angle with the horizontal plane under normal working conditions of the engine, so that the lubricating oil is sprayed along the angle for lubrication. Usually, the angle is 45°. The 45° angle can make the lubricating oil be sprayed at a more appropriate angle, compared with vertical or horizontal spraying, can be scattered in a larger area, makes the lubricating oil more widely cover the surfaces of various components, reduces the lubrication dead angle, ensures that each component can be fully lubricated, and also makes the lubricating oil more smoothly flow along the surface of the component, forms a uniform oil film, improves the lubricating effect, reduces the heat generated by friction and wear, prolongs the service life of the engine, and the 45° angle can also reduce the splashing and loss of lubricating oil to a certain extent, which will not be described here.

[0032] The engine of the embodiment comprises the engine pressure lubrication system, the pressure oil channel 1 adopts a sectional design, the flow path of the lubricating oil is optimized, the oil outlet direction of the oil outlet of the third oil channel 103 is upwardly inclined by a set angle, the spraying area is increased, the lubrication efficiency is improved, the service life of the engine is prolonged, the lubricating oil fine filter mounting seat 5 is integrally formed on the crankcase cover 4, the installation process is simplified, the installation difficulty is reduced, and the installation cost is reduced, the outlet end of the oil drain pipe 7 is clamped on the engine crankcase body 8 through the oil pipe clamp 9, and the oil drain pipe 7 is removed to realize oil draining, the operation is simple, and the oil drain pipe 7 is not easy to deform, the first balance shaft 1101 and the second balance shaft 1102 are arranged on the left lower side and the right lower side of the crankshaft 10 respectively and arranged in an equilateral triangle shape, and power is input to the lubricating oil pump 2 through the first balance shaft 1101, the driving mode is optimized, vibration is reduced, and noise is reduced.

[0033] In this embodiment, the crankshaft 10 and the balance shaft 11 are included, the balance shaft 11 includes the first balance shaft 1101 and the second balance shaft 1102, which are arranged on the left lower side and the right lower side of the crankshaft 10 and arranged in an equilateral triangle. In the prior art, the crankshaft 10 drives the balance shaft 11 to rotate, and the balance shaft 11 and the lubricating oil pump 2 are usually connected by a gear transmission mechanism. The gears mesh with each other are respectively installed on the balance shaft 11 and the input shaft of the lubricating oil pump 2. When the balance shaft 11 rotates, the input shaft of the lubricating oil pump 2 is driven to rotate through the meshing between the gears, thereby driving the lubricating oil pump 2 to work. This transmission mode can ensure the stability and accuracy of power transmission, optimize power distribution, and adjust the transmission ratio according to the actual working needs to meet the working speed requirements of the lubricating oil pump 2. Since the dependence on additional power source is reduced, the amount of fuel required during the operation of the engine is correspondingly reduced. The use of the balance shaft 11 to drive the lubricating oil pump 2 enables the engine to more efficiently utilize fuel energy, improves the fuel economy of the engine, and reduces the use cost. Using the balance shaft 11 to drive the lubricating oil pump 2 also avoids the need to set a dedicated driving mechanism in the engine, reduces the number of parts and the occupied space, and makes the overall structure of the engine more compact. Here, details are not repeated. The first balance shaft 1101 and the second balance shaft 1102 are arranged parallel to the crankshaft 10 and are arranged on the left lower side and the right lower side of the crankshaft 10. Here, details are not repeated. The equilateral triangle layout enables the horizontal and vertical components of the centrifugal force generated by the first balance shaft 1101 and the second balance shaft 1102 to cancel each other out, effectively balancing the inertial force generated when the crankshaft 10 rotates, and reducing the vibration of the engine. Since the first balance shaft 1101, the second balance shaft 1102, and the crankshaft 10 are arranged in an equilateral triangle, the stress between the shafts is more uniform during power transmission. When the crankshaft 10 transmits power to the first balance shaft 1101 and the second balance shaft 1102, the force distribution is relatively symmetrical, avoiding uneven wear of parts caused by uneven stress, and prolonging the service life of the engine. Here, details are not repeated.

[0034] The power of the lubricating oil pump 2 is input by the first balance shaft 1101. This design shortens the transmission path, reduces energy loss, and improves energy utilization. Here, details are not repeated.

[0035] In the embodiment, the oil drain pipe 7 has an inlet end communicated with the oil drain port of the crankcase cover 4 and an outlet end upwardly clamped on the oil pipe clamp 9 arranged on the engine crankcase 8. During oil draining, the oil drain pipe 7 is removed from the clamping position to realize oil draining. The inlet end of the oil drain pipe 7 is communicated with the oil drain port of the crankcase cover 4, which is convenient for directly sucking oil from the bottom of the crankcase cover 4 when it is necessary to drain lubricating oil, meets the actual demand of oil sucking of the engine, and the oil drain port is relatively low in position, so that the lubricating oil can be completely drained. The outlet end of the oil drain pipe 7 is upwardly clamped on the engine crankcase 8 through the oil pipe clamp 9, which provides a reliable fixing point for the oil drain pipe 7, prevents the oil drain pipe 7 from being damaged or displaced due to vibration and shaking during engine operation, helps to maintain the stability of the oil drain pipe 7 and ensure its normal work, meanwhile, avoids the oil drain pipe 7 from rubbing or colliding with other parts of the engine, prolongs the service life of the oil drain pipe 7, the oil pipe clamp 9 is fixedly connected to the crankcase 8, one end of the oil drain pipe 7 is fixedly connected to the crankcase cover 4, and the other end is detachably mounted on the oil pipe clamp 9, the clamping jaws of the oil pipe clamp 9 have a set elasticity, and a clamping opening is formed between the two clamping jaws, the oil drain pipe 7 is clamped between the two clamping jaws during use, which is convenient for clamping and removing. Of course, a structure for preventing the oil drain pipe 7 from being detached is needed, for example, the cross-sectional area of the oil drain pipe 7 at the upper part of the oil pipe clamp 9 is larger than that at the lower part. In the embodiment, the oil drain pipe 7 has an oil drain nozzle with a relatively large cross-sectional area, which can achieve the above-mentioned purpose.

[0036] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced by equivalents without departing from the spirit and scope of the present application, and all of them should be covered in the scope of the claims of the present application.

Claims

1. An engine pressure lubrication system, characterized in that: It includes a pressure oil passage, a lubricating oil pump that delivers lubricating oil to the pressure oil passage, and a lubricating oil fine filter located on the pressure oil passage, wherein the power of the lubricating oil pump is input from the engine's balance shaft; The pressure oil passage is a segmented oil passage, including a first oil passage connected to the outlet of the lubricating oil pump, a second oil passage connected to the outlet of the lubricating oil fine filter, and a third oil passage connected to the second oil passage.

2. The engine pressure lubrication system according to claim 1, characterized in that: The lubricating oil filter is detachably fixed to the engine crankcase cover.

3. The engine pressure lubrication system according to claim 2, characterized in that: The crankcase cover is integrally formed with a lubricating oil filter mounting base for installing a lubricating oil filter.

4. The engine pressure lubrication system according to claim 3, characterized in that: The lubricating oil fine filter is installed on the lubricating oil fine filter mounting base by a hollow bolt, and is connected to the pressure oil passage by the hollow bolt.

5. The engine pressure lubrication system according to claim 4, characterized in that: The hollow bolt serves as the outlet channel for lubricating oil after filtration by the lubricating oil fine filter.

6. The engine pressure lubrication system according to claim 1, characterized in that: The oil outlet of the third oil passage is tilted upward at a set angle.

7. An engine, characterized in that: Includes the engine pressure lubrication system as described in any one of claims 1-6.

8. The engine according to claim 7, characterized in that: It also includes a crankshaft and a balance shaft, wherein the balance shaft includes a first balance shaft and a second balance shaft, which are located on the lower left and lower right sides of the crankshaft and arranged in an equilateral triangle. The power for the lubricating oil pump is input from the first balance shaft.

9. The engine according to claim 8, characterized in that: It also includes an oil drain pipe, the inlet end of which is connected to the oil drain port on the crankcase cover, and the outlet end is snapped upwards onto an oil pipe clamp located on the engine crankcase. When draining oil, the oil drain pipe is removed from the clamp to drain the oil.

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