Engine oil duct system carried on variable frequency generator
By designing components such as box cap oil passage and crankshaft oil groove pressure relief hole on the inverter generator, the problem of insufficient lubrication of the camshaft is solved, efficient lubrication and heat dissipation are achieved, and the overall performance of the engine is improved.
Patent Information
- Application Number
- CN202422942685.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Existing variable frequency generators ignore the lubrication of the camshaft at high speeds, resulting in low lubrication efficiency, and insufficient accumulation and return design of engine oil at the crankshaft, affecting the lubrication effect and heat dissipation performance of the engine.
An engine oil passage system is designed, including a box cover oil passage, an oil pump assembly, an oil passage main pressure relief hole, a crankcase cover end oil return hole and a crankshaft oil groove. The camshaft hole and crankshaft hole are connected through the box cover oil passage to achieve lubrication of the camshaft and crankshaft end heads. The oil return hole and pressure relief hole are installed at the crankshaft to accumulate and spray engine oil to enhance the lubrication effect, and at the same time, the internal and external circulation mode is provided to improve lubrication efficiency and heat dissipation.
It improves the lubrication efficiency of the camshaft and crankshaft, enhances the heat dissipation performance of the engine, extends the service life, and takes away some heat through the circulation system, achieving more efficient lubrication and heat dissipation effects.
Smart Images
Figure CN223048869U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of engines, and particularly relates to an engine oil passage system mounted on a variable-frequency generator. Background Art
[0002] A variable-frequency generator is a generator that can change the output frequency. When it works, the engine runs at a high speed, which helps to reduce the weight and volume. During the high-speed rotation of the engine, lubrication is essential. It reduces the friction between moving parts, prevents wear caused by friction, thereby extending the service life of the engine. And when the engine oil flows between moving parts, it can take away part of the heat to help with heat dissipation. Conventional engines use splash lubrication and set up oil passages at the crankshaft for lubrication, often neglecting the lubrication of the end of the camshaft. Content of the Utility Model
[0003] Aiming at the defects existing in the above-mentioned prior art, the technical problem to be solved by the utility model is to provide an engine oil passage system for a variable-frequency generator that sets up an oil passage capable of lubricating the camshaft on the cover body and an oil return hole for accumulating engine oil at the crankshaft to improve the lubrication efficiency.
[0004] To solve the above technical problems, the utility model adopts the following technical scheme: An engine oil passage system mounted on a variable-frequency generator, including a cover oil passage, an oil pump assembly, and an oil passage main pressure relief hole. The inner side of the cover is provided with a cover end camshaft hole and a cover end crankshaft hole for installing a camshaft assembly and a crankshaft assembly. It also includes a crankcase cover end oil return hole, a crankshaft oil groove, and a crankshaft oil groove pressure relief hole. The cover oil passage is sequentially connected to an oil inlet, the cover end camshaft hole, and the cover end crankshaft hole. The oil pump assembly is arranged in the cover oil passage and is located between the cover end camshaft hole and the oil inlet. The crankshaft oil groove is an annular oil groove arranged in the cover end crankshaft hole and is connected to the cover oil passage. The crankshaft oil groove pressure relief hole is arranged on the front of the cover facing the variable-frequency machine piston and is connected to the crankshaft oil groove. When lubricating, the engine oil can be sprayed out from the crankshaft oil groove pressure relief hole to lubricate the engine piston. The crankcase cover end oil return hole is arranged upward on the front of the cover and is connected to the bottom of the cover end crankshaft hole, so that the engine oil can accumulate in the cover end crankshaft hole for lubrication.
[0005] Preferably, it further includes a housing oil passage. The housing oil passage is a circulating oil passage arranged inside the engine, connecting both ends of the crankshaft assembly and the camshaft assembly. And a housing end pressure relief hole is arranged on the housing oil passage. When the engine oil is sprayed out from the housing end pressure relief hole, it splashes onto the engine camshaft sprocket.
[0006] Preferably, the housing oil passage is provided with two outer connection holes. When performing internal circulation, both outer connection holes are blocked by plugs. When performing external circulation, the two outer connection holes are connected to an engine oil cooler.
[0007] Preferably, when the oil passage of the engine cover communicates with the camshaft hole at the engine cover end and the crankshaft hole at the engine cover end, it penetrates through the engine cover. A plug is provided at the end of the oil passage of the engine cover passing through the camshaft hole at the engine cover end. An oil passage pressure sensor installation position is provided at the end of the oil passage of the engine cover passing through the crankshaft hole at the engine cover end. Moreover, the oil passage of the engine cover passing through the crankshaft hole at the engine cover end is arranged upward, and the oil passage pressure sensor is arranged on the upper part of the engine cover.
[0008] Preferably, an oil filter screen is provided at the oil inlet of the oil passage system to filter oil impurities.
[0009] Preferably, a crankshaft oil return hole at the housing end is provided outside the installation hole at the housing end of the crankshaft assembly.
[0010] The beneficial effects of the present utility model are as follows: By providing an oil passage on the engine cover that communicates with the camshaft hole at the engine cover end and the crankshaft hole at the engine cover end, lubrication of the camshaft and the end of the crankshaft is achieved. An oil return hole inclined upward is provided at the bottom of the end of the crankshaft, enabling the oil to accumulate at the end of the crankshaft for lubrication, and a crankshaft oil groove pressure relief hole is provided for splash lubrication. Further, the oil passage in the housing can achieve internal circulation or external circulation, and the gears are splash-lubricated through the pressure relief hole at the housing end, better improving the lubrication efficiency of the engine. The circulation system takes away part of the heat, contributing to heat dissipation. Description of the Drawings
[0011] Figure 1 is a schematic structural diagram of the engine cover (with a crankshaft assembly and a camshaft assembly);
[0012] Figure 2 is Figure 1 the top view of
[0013] Figure 3 is Figure 2 the A-A sectional view of
[0014] Figure 4 is Figure 2 the B-B sectional view of
[0015] Figure 5 is the top view of the engine cover;
[0016] Figure 6 is Figure 5 the E-E sectional view of
[0017] Figure 7 is Figure 5 the F-F sectional view of
[0018] Figure 8 is a schematic structural diagram of the housing;
[0019] Figure 9 is a schematic diagram of the oil circuit circulation of the engine;
[0020] In the figure: 1 - crankshaft assembly, 2 - camshaft assembly, 3 - oil pump assembly, 4 - engine oil filter, 5 - installation position of oil passage pressure sensor, 6 - oil return hole at the crankcase cover end, 7 - crankshaft oil groove, 8 - pressure relief hole of crankshaft oil groove, 9 - camshaft hole at the cover end, 10 - main pressure relief hole of oil passage, 11 - crankshaft oil return hole at the housing end, 12 - plug, 13 - camshaft hole at the housing end, 14 - pressure relief hole at the housing end, 15 - crankshaft oil groove at the housing end, 16 - crankshaft hole at the cover end. Detailed implementation manner
[0021] In order to better understand the improvements made by the present utility model compared with the prior art, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments.
[0022] As Figure 1 shown, an engine oil passage system mounted on a variable-frequency generator mainly consists of a housing oil passage, a cover oil passage, an oil pump assembly 3, and a main pressure relief hole 10 of the oil passage. As Figure 2 shown, the inner side of the cover is provided with a camshaft hole 9 at the cover end and a crankshaft hole 16 at the cover end for installing a camshaft assembly 2 and a crankshaft assembly 1.
[0023] The cover is also provided with an oil return hole 6 at the crankcase cover end, a crankshaft oil groove 7, and a pressure relief hole 8 of the crankshaft oil groove. As Figure 5 shown, the cover oil passage is sequentially connected to an oil inlet, a camshaft hole 9 at the cover end, and a crankshaft hole 16 at the cover end. When the cover oil passage is connected to the camshaft hole 9 at the cover end and the crankshaft hole 16 at the cover end, it penetrates through the cover. And an engine oil filter 4 is provided at the oil inlet of the oil passage system to filter engine oil impurities. Among them, a plug is provided at the end of the oil passage of the cover oil passage passing through the camshaft hole 9 at the cover end, and an installation position 5 of an oil passage pressure sensor is provided at the end of the oil passage of the cover oil passage passing through the crankshaft hole 16 at the cover end. And the oil passage of the cover oil passage passing through the crankshaft hole 16 at the cover end is arranged upward. The oil passage pressure sensor is arranged on the upper part of the cover. The oil passage pressure of the engine oil is detected by the oil passage pressure sensor. When the engine oil is too little or the oil passage pressure is too low, a signal is sent to the alarm to achieve the purpose of flameout.
[0024] As Figure 3 shown, the oil pump assembly 3 is arranged in the cover oil passage and is located between the camshaft hole 9 at the cover end and the oil inlet. Along the direction of the engine oil flow, the main pressure relief hole 10 of the oil passage is arranged behind the oil pump assembly 3, and the main pressure relief hole 10 of the oil passage adopts a spring-type pressure relief component.
[0025] As Figure 4 shown, the crankshaft oil groove 7 is an annular oil groove arranged in the crankshaft hole 16 at the cover end and is connected to the cover oil passage. Among them, as Figure 6As shown, the pressure relief hole 8 of the crankshaft oil groove is arranged on the front of the crankcase cover facing the piston of the frequency converter and communicates with the crankshaft oil groove 7. When lubricating, the engine oil can be ejected from the pressure relief hole 8 of the crankshaft oil groove to lubricate the engine piston. As Figure 7 shown, the end oil return hole 6 of the crankcase cover is arranged upward on the front of the crankcase cover and communicates with the bottom of the crankshaft hole 16 at the end of the crankcase cover, so that the engine oil can accumulate in the crankshaft hole 16 at the end of the crankcase cover for lubrication, strengthening the lubrication effect. When the engine oil accumulates to full, it flows out from the end oil return hole 6 of the crankcase cover.
[0026] As Figure 9 shown, the oil passage of the engine block is a circulating oil passage arranged inside the engine, which communicates with both ends of the crankshaft assembly 1 and the camshaft assembly 2. There is an oil return hole 11 at the engine block end of the crankshaft assembly 1 outside the mounting hole at the engine block end, and there is a pressure relief hole 14 at the engine block end on the oil passage of the engine block. When the engine oil is ejected from the pressure relief hole 14 at the engine block end, it splashes onto the camshaft sprocket of the engine, and the camshaft throws out the splashed engine oil to lubricate each moving pair inside the engine block. The oil passage of the engine block can carry out internal circulation of the engine or be connected to an oil cooler for external circulation. The two circulation modes of the oil passage of the engine block are realized through two external connection holes. When carrying out internal circulation, both external connection holes are blocked by plugs 12. When carrying out external circulation, the two external connection holes are connected to the oil cooler.
[0027] As mentioned above, it is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and should be covered within the protection scope of the present invention.
Claims
1. An engine oil passage system mounted on a variable frequency generator, comprising a case cover oil passage, an oil pump assembly (3) and a main pressure relief hole (10) of the oil passage, wherein a case cover end camshaft hole (9) and a case cover end crankshaft hole (16) are provided on the inner side of the case cover for mounting a camshaft assembly (2) and a crankshaft assembly (1), and characterized in that: It also includes an oil return hole (6) at the crankcase cover end, a crankshaft oil groove (7) and a crankshaft oil groove pressure relief hole (8), wherein the cover oil passage is connected to the oil inlet, the cover camshaft hole (9) and the cover crankshaft hole (16) in sequence, and the oil pump assembly (3) is arranged in the cover oil passage and is located between the cover camshaft hole (9) and the oil inlet; the crankshaft oil groove (7) is an annular oil groove arranged in the cover crankshaft hole (16) and connected to the cover oil passage, and the crankshaft oil groove pressure relief hole (8) is arranged on the front of the cover facing the inverter piston and connected to the crankshaft oil groove (7), and during lubrication, engine oil can be sprayed from the crankshaft oil groove pressure relief hole (8) to lubricate the engine piston; the crankcase cover oil return hole (6) is arranged on the front of the cover facing upward and connected to the bottom of the cover crankshaft hole (16), so that the engine oil can be accumulated in the cover crankshaft hole (16) for lubrication.
2. The engine oil passage system mounted on a variable frequency generator according to claim 1, characterized in that: The invention also comprises a case oil passage, which is a circulating oil passage arranged inside the engine, connecting the two ends of the crankshaft assembly (1) and the camshaft assembly (2), and a case end pressure relief hole (14) is provided on the case oil passage, so that when the engine oil is sprayed out from the case end pressure relief hole (14), it splashes onto the engine camshaft gear disc.
3. The engine oil passage system mounted on a variable frequency generator according to claim 2, characterized in that: The box oil passage is provided with two external connection holes. When internal circulation is performed, the two external connection holes are blocked by plugs (12). When external circulation is performed, the two external connection holes are connected to the engine oil cooler.
4. The engine oil passage system mounted on a variable frequency generator according to claim 1, characterized in that: The case cover oil passage is connected to the case cover end camshaft hole (9) and the case cover end crankshaft hole (16) and penetrates the case cover. A plug is provided at the end of the oil passage of the case cover oil passage passing through the case cover end camshaft hole (9). An oil passage pressure sensor installation position (5) is provided at the end of the oil passage of the case cover oil passage passing through the case cover end crankshaft hole (16). The oil passage of the case cover oil passage passing through the case cover end crankshaft hole (16) is arranged upward, and the oil passage pressure sensor is arranged at the upper part of the case cover.
5. The engine oil passage system mounted on a variable frequency generator according to claim 1, characterized in that: An oil filter (4) is provided at the oil inlet of the oil channel system to filter impurities in the oil.
6. The engine oil passage system mounted on a variable frequency generator according to claim 1, characterized in that: A case end crankshaft oil return hole (11) is provided outside the case end mounting hole of the crankshaft assembly (1).