A turbocharger lubrication system for a hybrid vehicle

Abstract

The present application relates to turbocharger lubrication technical field, specifically relates to a kind of turbocharger lubrication system for hybrid car, including main oil tank and the auxiliary oil tank being connected with main oil tank by first connecting pipe, first connecting pipe is provided with the first check valve of control flow direction as from main oil tank to auxiliary oil tank, main oil tank bottom end is connected with main oil outlet pipe, auxiliary oil tank bottom end is connected with auxiliary oil outlet pipe, auxiliary oil outlet pipe other end is connected with main oil outlet pipe, and flowmeter is arranged in the lower portion of main oil outlet pipe located auxiliary oil outlet pipe connecting section.This application provides sufficient lubricating oil standby for auxiliary oil pipe under the premise of not affecting the normal working condition of main oil tank and main oil outlet pipe, when flowmeter detects that the lubricating oil flow rate or flow in main oil outlet pipe is insufficient, push plate pumps lubricating oil in auxiliary oil tank into main oil outlet pipe, ensure that the lubricating oil flow rate and flow in main oil outlet pipe are normal in the two moments of engine start and stop.

Description

Technical Field

[0001] This invention relates to the field of turbocharger lubrication technology, and more specifically to a turbocharger lubrication system for hybrid vehicles. Background Technology

[0002] Turbocharging is a technology that uses the exhaust gas generated by the operation of an internal combustion engine to drive an air compressor. The main function of turbocharging is to increase the intake air volume of the engine, thereby increasing the engine's power and torque, improving fuel economy and reducing exhaust emissions while maintaining the same fuel consumption. In the main structure of the turbocharger, the pump wheel and turbine are connected by a shaft, which is the rotor. The exhaust gas from the engine drives the pump wheel, which in turn drives the turbine to rotate. After the turbine rotates, it pressurizes the intake system. The rotor can reach a speed of 40,000-70,000 r / min during operation. Therefore, it is necessary to lubricate the rotor, pump wheel, and turbine at all times. The turbocharger's lubrication system supplies lubricating oil to the support part of the exhaust gas-driven turbocharger through the turbocharger. The oil lubricates the support part and is then discharged from the oil outlet, filtered, and circulated for lubrication.

[0003] Existing turbocharger lubrication systems typically use an oil pump to directly pump lubricating oil into the main reservoir, which then lubricates the turbocharger via the main flow channel. However, when the engine is first started, the lubrication system has not yet reached its normal operating pressure, resulting in insufficient flow rate and volume of lubricating oil in the main flow channel, making it difficult to provide sufficient lubrication to the turbocharger. When the engine stops, the turbocharger continues to rotate due to inertia, but the pressure of the lubrication system has already decreased to below the normal operating pressure, causing insufficient flow rate and volume of lubricating oil in the main flow channel again, resulting in insufficient lubrication to the turbocharger. Therefore, an auxiliary reservoir that operates separately from the engine start-stop system has been added. However, the newly added auxiliary reservoir often fails to replenish the main flow channel with lubricating oil in time due to oil shortage, resulting in poor performance and minimal assistance to the lubrication system.

[0004] Therefore, it is necessary to invent a turbocharger lubrication system for hybrid vehicles to solve the above problems. Summary of the Invention

[0005] To address the shortcomings of existing technologies, the present invention aims to provide a turbocharger lubrication system for hybrid vehicles, which solves the problem that the newly added auxiliary oil reservoir in the prior art often fails to replenish the main lubrication channel in a timely manner due to oil shortage, resulting in poor performance and minimal assistance to the lubrication system.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A lubrication system for a turbocharger includes a main oil reservoir and an auxiliary oil reservoir connected to the main oil reservoir via a first connecting pipe. The top of the auxiliary oil reservoir is open. The first connecting pipe is equipped with a first one-way valve that controls the flow direction from the main oil reservoir to the auxiliary oil reservoir. The bottom of the main oil reservoir is connected to a main oil outlet pipe, and the bottom of the auxiliary oil reservoir is connected to an auxiliary oil outlet pipe. The other end of the auxiliary oil outlet pipe is connected to the main oil outlet pipe, and a flow meter is installed below the connection section of the auxiliary oil outlet pipe on the main oil outlet pipe. A moving magnet is longitudinally slidably connected to the top of the auxiliary oil reservoir, and a push plate is connected to the bottom of the moving magnet. The push plate slides longitudinally against the inner circumferential sidewall of the auxiliary oil reservoir, and a spring is installed inside the auxiliary oil reservoir to prevent the push plate from sliding downward. An oil inlet pipe is connected to the top of the main oil reservoir, and a second connecting pipe is connected between the oil inlet pipe and the auxiliary oil reservoir. The second connecting pipe is equipped with a second one-way valve that controls the flow direction from the oil inlet pipe to the auxiliary oil reservoir. The auxiliary oil outlet pipe is equipped with a two-way valve.

[0008] As a preferred embodiment of the present invention, the main oil storage tank is detachably fitted with a fixing bracket on the upper part of the first connecting pipe, and the other end of the fixing bracket is detachably fitted with an auxiliary oil storage tank. A connecting frame is connected to the top of the fixing bracket, and an electromagnet is connected to the other end of the connecting frame, with the electromagnet located directly above the moving magnet.

[0009] As a preferred embodiment of the present invention, the top of the auxiliary oil storage tank is detachably abutted against a tank cover, the tank cover has a through hole in the center, and a sealing collar passes through the through hole.

[0010] In a preferred embodiment of the present invention, a piston rod is connected to the center of the bottom end of the moving magnet, the bottom end of the piston rod is connected to the top end of the push plate, and the piston rod slides longitudinally through the sealing ring.

[0011] As a preferred embodiment of the present invention, the bottom end of the main oil outlet pipe is connected to a connector, and a third check valve is provided in the middle part of the main oil outlet pipe where the flow meter and the auxiliary oil outlet pipe are connected, which controls the flow direction from the main oil storage tank to the connector.

[0012] As a preferred embodiment of the present invention, an oil inlet flange is connected to the top of the oil inlet pipe.

[0013] The technical effects and advantages provided by the present invention in the above technical solution are as follows:

[0014] This invention facilitates the pumping of lubricating oil into the main reservoir via an inlet pipe. During the pumping process, a certain amount of lubricating oil is input from the main reservoir to the auxiliary reservoir via the activation of a first one-way valve, and simultaneously, a certain amount of lubricating oil is input from the inlet pipe to the auxiliary reservoir via the activation of a second one-way valve. While the main reservoir pumps lubricating oil into the turbocharger via the main outlet pipe, once the flow meter detects that the flow rate and volume of the lubricating oil in the main outlet pipe meet the standards, a two-way valve is activated to control the flow direction from one side of the main outlet pipe. A certain amount of lubricating oil is introduced into the auxiliary oil reservoir through the pipe. Under the premise of not affecting the normal operation of the main oil reservoir and the main oil outlet pipe, the auxiliary oil reservoir is always provided with sufficient lubricating oil for backup. When the flow meter detects that the flow rate or flow of lubricating oil in the main oil outlet pipe is insufficient, the passive downward sliding of the moving magnet pushes the push plate to move downward along the auxiliary oil reservoir, thereby pumping the lubricating oil in the auxiliary oil reservoir into the main oil outlet pipe through the auxiliary oil outlet pipe, ensuring that the flow rate and flow of lubricating oil in the main oil outlet pipe are normal during the two times of engine start and stop. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0016] Figure 2 This is a schematic diagram of the planar front view structure of the present invention;

[0017] Figure 3 This is a schematic diagram of the planar rear view structure of the present invention;

[0018] Figure 4 For the present invention Figure 2 Schematic diagram of the cross-sectional structure at point AA.

[0019] Explanation of reference numerals in the attached figures:

[0020] 1. Main oil storage tank; 2. Auxiliary oil storage tank; 3. Main oil outlet pipe; 4. Auxiliary oil outlet pipe; 5. Two-way valve; 6. Flow meter; 7. First check valve; 8. First connecting pipe; 9. Second check valve; 10. Fixing bracket; 11. Tank cover; 12. Oil inlet pipe; 13. Oil inlet flange; 14. Connecting bracket; 15. Electromagnet; 16. Moving magnet; 17. Piston rod; 18. Push plate; 19. Spring; 20. Second connecting pipe; 21. Third check valve; 22. Insert pipe; 23. Sealing collar. Detailed Implementation

[0021] The present invention will be further described below with reference to the accompanying drawings. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and should not be used to limit the scope of protection of the present invention.

[0022] This invention provides, for example Figure 1-4The turbocharger lubrication system shown includes a main oil reservoir 1 and an auxiliary oil reservoir 2 connected to the main oil reservoir 1 via a first connecting pipe 8. The top of the auxiliary oil reservoir 2 is open. The first connecting pipe 8 is equipped with a first check valve 7 that controls the flow direction from the main oil reservoir 1 to the auxiliary oil reservoir 2. The bottom of the main oil reservoir 1 is connected to a main oil outlet pipe 3, and the bottom of the auxiliary oil reservoir 2 is connected to an auxiliary oil outlet pipe 4. The other end of the auxiliary oil outlet pipe 4 is connected to the main oil outlet pipe 3, and a flow meter 6 is installed below the connection section of the auxiliary oil outlet pipe 4 on the main oil outlet pipe 3. A movable magnet 16 is longitudinally slidably connected to the top of the auxiliary oil storage tank 2. A push plate 18 is connected to the bottom of the movable magnet 16. The push plate 18 slides longitudinally against the inner circumferential side wall of the auxiliary oil storage tank 2. A spring 19 is provided inside the auxiliary oil storage tank 2 to prevent the push plate 18 from sliding downward. An oil inlet pipe 12 is connected to the top of the main oil storage tank 1. A second connecting pipe 20 is connected between the oil inlet pipe 12 and the auxiliary oil storage tank 2. The second connecting pipe 20 is provided with a second one-way valve 9 to control the flow direction from the oil inlet pipe 12 to the auxiliary oil storage tank 2. A two-way valve 5 is provided on the auxiliary oil outlet pipe 4.

[0023] The main oil tank 1 is detachably fitted with a fixing bracket 10 above the first connecting pipe 8. The other end of the fixing bracket 10 is detachably fitted with the auxiliary oil tank 2. The top of the fixing bracket 10 is connected to a connecting frame 14, and the other end of the connecting frame 14 is connected to an electromagnet 15. The electromagnet 15 is located directly above the moving magnet 16. When the flow meter 6 in the main oil outlet pipe 3 detects that the lubricating oil flow rate and flow are insufficient, the relay energizes the electromagnet 15, thereby driving the moving magnet 16 to slide downward to force the push plate 18 to slide downward along the side wall of the auxiliary oil tank 2, thereby pumping the lubricating oil into the main oil outlet pipe 3 through the auxiliary oil outlet pipe 4 to replenish the flow.

[0024] The top of the auxiliary oil storage tank 2 is detachably abutted by a tank cover 11. The center of the tank cover 11 has a through hole, and a sealing collar 23 is inserted through the through hole. The detachable tank cover 11 can facilitate the removal and replacement of the internal push plate 18 and spring 19.

[0025] A piston rod 17 is connected to the center of the bottom end of the movable magnet 16. The bottom end of the piston rod 17 is connected to the top end of the push plate 18. The piston rod 17 slides longitudinally through the sealing ring 23. When the electromagnet 15 is energized, it drives the movable magnet 16 to move downward. During this process, the piston rod 17 slides longitudinally through the sealing ring 23, thereby driving the push plate 18 to slide downward along the side wall of the auxiliary oil tank 2 and compress the spring 19. When the flow rate and flow of lubricating oil in the main oil outlet pipe 3 are normal, the relay stops energizing the electromagnet 15. The compressed spring 19 drives the push plate 18 to slide upward until the movable magnet 16 and the electromagnet 15 are in contact. Then the auxiliary oil tank 2 continues to store oil.

[0026] The bottom end of the main oil outlet pipe 3 is connected to a connector 22. The main oil outlet pipe 3 is located in the middle section of the connection between the flow meter 6 and the auxiliary oil outlet pipe 4. A third check valve 21 is installed to control the flow direction from the main oil storage tank 1 to the connector 22. The connector 22 can be conveniently connected to the turbocharger inlet for use.

[0027] The top end of the oil inlet pipe 12 is connected to an oil inlet flange 13, which allows the oil inlet pipe 12 to be easily connected to the oil pump.

[0028] This invention provides, for example Figure 1-4 The turbocharger shown includes the turbocharger lubrication system of claims 1-6, and the turbocharger lubrication system is connected to the turbocharger mains via connector 22.

[0029] In use, the inlet flange 13 connects the inlet pipe 12 to the oil pump, which pumps lubricating oil into the main oil reservoir 1 through the inlet pipe 12. During this process, the first check valve 7 activates to input a certain amount of lubricating oil from the main oil reservoir 1 to the auxiliary oil reservoir 2, and the second check valve 9 activates to input a certain amount of lubricating oil from the inlet pipe 12 to the auxiliary oil reservoir 2. The two-way valve 5 activates its unilateral flow direction to input a certain amount of lubricating oil from the main outlet pipe 3 to the auxiliary oil reservoir 2. After this, the two-way valve 5 is closed, and the auxiliary oil reservoir 2 only serves as an oil storage tank and does not supply oil. At the engine start and stop times, when the flow meter 6 detects that the lubricating oil flow rate in the main outlet pipe 3 is insufficient, the two-way valve 5 opens in reverse, the relay electromagnet 15 is energized, and the moving magnet 16 slides downward to force the push plate 18 to slide downward along the side wall of the auxiliary oil reservoir 2, thereby pumping lubricating oil into the main outlet pipe 3 through the auxiliary outlet pipe 4 to replenish the flow. After the flow meter 6 detects that the flow rate and flow of lubricating oil in the main oil outlet pipe 3 are normal, the main oil storage tank 1 supplies oil to the main oil outlet pipe 3 normally. At this time, the two-way valve 5 opens in reverse again. Under the premise that the flow meter 6 detects that the flow rate and flow of lubricating oil in the main oil outlet pipe 3 are normal, the first check valve 7, the second check valve 9, and the two-way valve 5 input a certain amount of lubricating oil into the auxiliary oil storage tank 2 for storage, so as to replenish it for the next use.

[0030] This invention uses an oil inlet pipe 12 to facilitate the pumping of lubricating oil into the main oil storage tank 1 for later use. During the pumping process, a certain amount of lubricating oil is input from the main oil storage tank 1 to the auxiliary oil storage tank 2 through the activation of the first one-way valve 7, and simultaneously, a certain amount of lubricating oil is input from the oil inlet pipe 12 to the auxiliary oil storage tank 2 through the activation of the second one-way valve 9. This occurs while lubricating oil is being pumped from the main oil storage tank 1 into the turbocharger through the main oil outlet pipe 3. Once the flow meter 6 detects that the flow rate and volume of the lubricating oil in the main oil outlet pipe 3 meet the standards, a certain amount of lubricating oil is input from the main oil outlet pipe 3 to the auxiliary oil storage tank 2 through the unilateral flow direction activation of the two-way valve 5. Without affecting the normal operation of the main oil reservoir 1 and the main oil outlet pipe 3, sufficient lubricating oil is always provided for the auxiliary oil reservoir 2. When the flow meter 6 detects that the flow rate or flow of the lubricating oil in the main oil outlet pipe 3 is insufficient, the passive downward sliding of the moving magnet 16 pushes the push plate 18 to move downward along the auxiliary oil reservoir 2, thereby pumping the lubricating oil in the auxiliary oil reservoir 2 into the main oil outlet pipe 3 through the auxiliary oil outlet pipe 4, ensuring that the flow rate and flow of the lubricating oil in the main oil outlet pipe 3 are normal during the two times of engine start and stop.

[0031] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A turbocharger lubrication system for a hybrid vehicle, characterized by: The application relates to a main oil storage tank (1) and an auxiliary oil storage tank (2) connected with the main oil storage tank (1) through a first connecting pipe (8), wherein the auxiliary oil storage tank (2) has an open top end, the first connecting pipe (8) is provided with a first one-way valve (7) for controlling the flow direction from the main oil storage tank (1) to the auxiliary oil storage tank (2), the bottom end of the main oil storage tank (1) is connected with a main oil outlet pipe (3), the bottom end of the auxiliary oil storage tank (2) is connected with an auxiliary oil outlet pipe (4), the other end of the auxiliary oil outlet pipe (4) is connected with the main oil outlet pipe (3), a flowmeter (6) is arranged below the connection section of the main oil outlet pipe (3) and the auxiliary oil outlet pipe (4), the top end of the auxiliary oil storage tank (2) is longitudinally slidably connected with a moving magnet (16), the bottom end of the moving magnet (16) is connected with a push plate (18), the push plate (18) is longitudinally slidably abutted with the inner circumferential sidewall of the auxiliary oil storage tank (2), a spring (19) is arranged in the auxiliary oil storage tank (2) to prevent the push plate (18) from sliding downward, the top end of the main oil storage tank (1) is connected with an oil inlet pipe (12), the oil inlet pipe (12) and the auxiliary oil storage tank (2) are connected with a second connecting pipe (20), the second connecting pipe (20) is provided with a second one-way valve (9) for controlling the flow direction from the oil inlet pipe (12) to the auxiliary oil storage tank (2), and the auxiliary oil outlet pipe (4) is provided with a bidirectional valve (5).

2. The turbocharger lubrication system for a hybrid vehicle of claim 1, wherein: The upper portion of the main oil storage tank (1) is detachably sleeved with a fixed clamping frame (10), the other end of the fixed clamping frame (10) is detachably sleeved on the auxiliary oil storage tank (2), the top end of the fixed clamping frame (10) is connected with a connecting frame (14), the other end of the connecting frame (14) is connected with an electromagnet (15), and the electromagnet (15) is located directly above the moving magnet (16).

3. The turbocharger lubrication system for a hybrid vehicle of claim 1, wherein: The top end of the auxiliary oil storage tank (2) is detachably abutted with a tank cover (11), a through hole is formed in the center of the tank cover (11), and a sealing sleeve ring (23) is arranged in the through hole.

4. The turbocharger lubrication system for a hybrid vehicle of claim 3, wherein: The bottom end of the moving magnet (16) is connected with a piston rod (17), the bottom end of the piston rod (17) is connected with the top end of the push plate (18), and the piston rod (17) is longitudinally slidably arranged in the sealing sleeve ring (23).

5. The turbocharger lubrication system for a hybrid vehicle of claim 1, wherein: The bottom end of the main oil outlet pipe (3) is connected with a plug-in pipe (22), and the main oil outlet pipe (3) is provided with a third one-way valve (21) for controlling the flow direction from the main oil storage tank (1) to the plug-in pipe (22) at the middle portion of the flowmeter (6) and the connection section of the auxiliary oil outlet pipe (4).

6. The turbocharger lubrication system for a hybrid vehicle of claim 1, wherein: The top end of the oil inlet pipe (12) is connected with an oil inlet flange (13).

Images