Power steering pump

The power steering is to assist the driver in a motor vehicle reorientation, to mitigate the force strength of the steering wheel for the driver, of course, the power steering in driving safety, economy on a certain role.

Classification of the booster pump

Car power steering system configuration, and I can see the data, can be roughly divided into three categories:

First, the the mechanical hydraulic power steering system;

Second, the electro-hydraulic power steering system;

Third, the electric power steering system.

The mechanical hydraulic power steering system

Mechanical-hydraulic power steering system is generally by a hydraulic pump, tubing, pressure and flow control valve, V-drive belt, storage tanks and other components constitute.

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Whether the car is turning, the system should work, and in the large steering speed is low, you need to hydraulic pump output more power to get help. So a waste of resources, but also to a certain extent. Can recall: On this car, especially when low-speed turn, feel the direction of the sink, and the engine is relatively effortless. Also, because the pressure of the hydraulic pump is relatively easy to damage the power steering system.

Also, the mechanical-hydraulic power steering system by the hydraulic pump and piping and tanks, to keep up the pressure, regardless of whether the power steering system is always in working condition, high energy consumption, this consumption of resources is also a reason why.

More general economic cars use the mechanical hydraulic power system. Auto Parts encyclopedia

Electro-hydraulic power steering system

Main components: storage tanks, power steering control unit, the electric pump, steering, power steering sensor or the like, wherein the steering control unit and the electric pump is an integral structure.

How it works: electronic hydraulic power steering system to overcome the traditional disadvantages of hydraulic power steering system. It is used in the hydraulic pump is no longer directly driven by the engine belt, instead of using an electric pump, the state of all of its work by the electronic control unit in accordance with the vehicle speed, steering angle signal calculated ideal state. Simply put, when the low-speed large steering, electronic control unit drives the electronic hydraulic pump to output large power at a high speed, so that the driver fight direction effort; automobile traveling at high speed, the hydraulic control unit drives the electronic hydraulic pump at a lower speed operation need not affect the high-speed hit shift at the same time, saving a portion of the engine power. Auto Parts encyclopedia

Electric power steering system (EPS)

English stands for Electronic Power Steering, referred to as EPS, which take advantage of the momentum generated by the motor power steering assist motorists. The EPS composition different cars despite the structural components, but generally the same. Generally posed by torque sensor, electronic control unit, motor, speed reducer, mechanical steering gear, as well as livestock battery power (steering).

Works: Automotive steering torque (steering) sensor "feel" to the moment and the intended direction of rotation of the steering wheel, these signals will be sent via the data bus to the electronic control unit, the electronic control unit will drive torque to be transfer such as the direction of the data signal, and gives an operation instruction to the motor controller, so that the motor will be output according to the specific needs of the rotational torque of the corresponding size, thereby generating the power steering. If you do not turn, the system will not work, wait for the call is in standby (sleep) state. Due to the operating characteristics of the motor-driven electric power steering, you will feel open car, a sense of direction to better and more stable at high speed, the saying goes, the direction is not flighty. Not work because it does not turn, but also how much the saving energy. More general high-end cars use this power steering system.