Quick Details

• Size:

  9inch

• Pressure:

  9Pa

• Max Pressure:

  9Pa

• Pump Speed:

  9r

• Displacement:

  9ml/r

• Place of Origin:

  CHINA

• Samples:

  Free

• Delivery Time:

  9

• Packing:

  Normal

• Delivery Port:

  Shsndong

• Export Ratio:

  21% - 30%

• OE Experience:

  No

Product Name:Electrical Power Steering Pump For BMW MINI

Electrical Power Steering Pump For BMW MINI

Application

BMW MINI

Product Description:

Most power steering systems work by using a hydraulic system to multiply force applied to the steering wheel inputs to the vehicle's steered (usually front) road wheels.^[12] The hydraulic pressure typically comes from a gerotor or rotary vane pump driven by the vehicle's engine. A double-acting hydraulic cylinder applies a force to the steering gear, which in turn steers the roadwheels. The steering wheel operates valves to control flow to the cylinder. The more torque the driver applies to the steering wheel and column, the more fluid the valves allow through to the cylinder, and so the more force is applied to steer the wheels.^[13]

One design for measuring the torque applied to the steering wheel has a torque sensor a torsion bar at the lower end of the steering column. As the steering wheel rotates, so does the steering column, as well as the upper end of the torsion bar. Since the torsion bar is relatively thin and flexible, and the bottom end usually resists being rotated, the bar will twist by an amount proportional to the applied torque. The difference in position between the opposite ends of the torsion bar controls a valve. The valve allows fluid to flow to the cylinder which provides steering assistance; the greater the "twist" of the torsion bar, the greater the force.

Since the hydraulic pumps are positive-displacement type, the flow rate they deliver is directly proportional to the speed of the engine. This means that at high engine speeds the steering would naturally operate faster than at low engine speeds. Because this would be undesirable, a restricting orifice and flow-control valve direct some of the pump's output back to the hydraulic reservoir at high engine speeds. A pressure relief valve prevents a dangerous build-up of pressure when the hydraulic cylinder's piston reaches the end of its stroke.

The steering booster is arranged so that should the booster fail, the steering will continue to work (although the wheel will feel heavier). Loss of power steering can significantly affect the handling of a vehicle. Each vehicle owner's manual gives instructions for inspection of fluid levels and regular maintenance of the power steering system.

The working liquid, also called "hydraulic fluid" or "oil", is the medium by which pressure is transmitted. Common working liquids are based on mineral oil.

Some modern systems also include an electronic control valve to reduce the hydraulic supply pressure as the vehicle's speed increases; this is variable-assist power steering.

DewinAuto Limited was founded in 1996 located in Xingtai City,Hebei Province,China.We was once a State-owned Enterprise, and With reshuffle of the enterprises, We became a private enterprise in 2007. And then we change our name and made our sell office in Beijing, and expected to say “Beijing Qing ...[Read More]

Company Profile:

• Main Product:

  Steering Parts, Cover Parts, Sensors

• Business Type:

  Manufacturer

• Current Export Market:

  North America, South America, Western Europe, Eastern Europe, Eastern Asia, Southeast Asia, Mid East, Africa, Oceania

• Total Annual Sales:

  USD 1,000,001 - 2,000,000

Factory Profile:

• Number of Employees:

  51 - 100 People