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Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
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1. The power steering pump is the power source of the hydraulic power steering system. It uses the engine as the transmission medium to convert mechanical energy into hydraulic energy. The steering gear converts the hydraulic energy into mechanical energy through the hydraulic oil output by the oil pump, thus reducing the driver's operation. Strength, improve the maneuverability of the vehicle;.
2. Control the internal pressure of the power steering pipeline through the pressure safety valve to ensure the safety of the steering system;
3. Control the flow of the steering system through the flow control valve to ensure the driver's steering feel when the vehicle is traveling at high speed.
Classification of power steering pumps
1. According to the vehicle type, it can be divided into: commercial vehicle steering pump and passenger vehicle steering pump.
2. In terms of structural form, it can be divided into: vane steering pump, gear steering pump, and plunger steering pump; among them, the double-acting vane steering pump is used in various vehicle models due to its small size, low noise, and high volumetric efficiency. is widely used in.
3. According to the driving form, it can be divided into: gear-driven steering pump, pulley-driven steering pump, and cross key (spline) steering pump; among which, the pulley-driven steering pump is mainly used for passenger cars with small driving torque. , gear drive type and cross sliding key type are more common in commercial vehicles.
Power steering pump components
At present, most automotive steering pumps are double-acting vane steering pumps, which are mainly composed of ordinary double-acting vane pumps, flow control valves and pressure safety valves. The double-acting vane pump provides high-pressure oil, and the flow control valve ensures that the steering pump output is suitable for the entire vehicle. The required flow and pressure safety valve control the maximum output pressure of the steering pump. For gasoline engines with smaller engine power, a pressure switch should also be equipped.
Exploded view of power steering pump
1.Driving wheel
2. Drive shaft
3. Snap spring
4. Oil seal
5. Bearing
6. Pump body
7. Steel ball
8. Pressure switch assembly
9. O-ring
10. Pressure plate
11. Stator
12. Blade
13. Rotor
14. Bolt
15. Pump cover
16. Seal ring
17. Positioning pin
18. Protection plug
19. Bolt
20. Oil inlet pipe
21. O-ring
22. Valve plug
23. Spring
24. Slide valve assembly
How the power steering pump works
As shown in the figure below, after the drive wheel drives the rotor to rotate, the blades open under the action of centrifugal force and form a working cavity together with the stator, rotor and oil distribution plate. When the rotor and blades move from the small arc area on the inner surface of the stator to the large When the arc zone rotates, the volume between the two blades increases, the pressure decreases, and oil is absorbed through the oil suction port of the oil distribution plate; when turning from the large arc zone to the small arc zone, the volume between the two blades shrinks , the pressure increases, and the oil is discharged through the oil drain port of the pressure plate. The discharged high-pressure oil enters the steering gear through the steering oil pipe to provide steering assistance.
Please feel free to contactus Parts Sea engineers or sales for help if you have no parts No.
tse@partssea.com | sales@partssea.com
1. The power steering pump is the power source of the hydraulic power steering system. It uses the engine as the transmission medium to convert mechanical energy into hydraulic energy. The steering gear converts the hydraulic energy into mechanical energy through the hydraulic oil output by the oil pump, thus reducing the driver's operation. Strength, improve the maneuverability of the vehicle;.
2. Control the internal pressure of the power steering pipeline through the pressure safety valve to ensure the safety of the steering system;
3. Control the flow of the steering system through the flow control valve to ensure the driver's steering feel when the vehicle is traveling at high speed.
Classification of power steering pumps
1. According to the vehicle type, it can be divided into: commercial vehicle steering pump and passenger vehicle steering pump.
2. In terms of structural form, it can be divided into: vane steering pump, gear steering pump, and plunger steering pump; among them, the double-acting vane steering pump is used in various vehicle models due to its small size, low noise, and high volumetric efficiency. is widely used in.
3. According to the driving form, it can be divided into: gear-driven steering pump, pulley-driven steering pump, and cross key (spline) steering pump; among which, the pulley-driven steering pump is mainly used for passenger cars with small driving torque. , gear drive type and cross sliding key type are more common in commercial vehicles.
Power steering pump components
At present, most automotive steering pumps are double-acting vane steering pumps, which are mainly composed of ordinary double-acting vane pumps, flow control valves and pressure safety valves. The double-acting vane pump provides high-pressure oil, and the flow control valve ensures that the steering pump output is suitable for the entire vehicle. The required flow and pressure safety valve control the maximum output pressure of the steering pump. For gasoline engines with smaller engine power, a pressure switch should also be equipped.
Exploded view of power steering pump
1.Driving wheel
2. Drive shaft
3. Snap spring
4. Oil seal
5. Bearing
6. Pump body
7. Steel ball
8. Pressure switch assembly
9. O-ring
10. Pressure plate
11. Stator
12. Blade
13. Rotor
14. Bolt
15. Pump cover
16. Seal ring
17. Positioning pin
18. Protection plug
19. Bolt
20. Oil inlet pipe
21. O-ring
22. Valve plug
23. Spring
24. Slide valve assembly
How the power steering pump works
As shown in the figure below, after the drive wheel drives the rotor to rotate, the blades open under the action of centrifugal force and form a working cavity together with the stator, rotor and oil distribution plate. When the rotor and blades move from the small arc area on the inner surface of the stator to the large When the arc zone rotates, the volume between the two blades increases, the pressure decreases, and oil is absorbed through the oil suction port of the oil distribution plate; when turning from the large arc zone to the small arc zone, the volume between the two blades shrinks , the pressure increases, and the oil is discharged through the oil drain port of the pressure plate. The discharged high-pressure oil enters the steering gear through the steering oil pipe to provide steering assistance.