Power steering, as the name suggests, is to assist the driver to adjust the direction of vehicle, reduce the force strength, hit the steering wheel for drivers of course, power steering has a certain role in the safety and economy of the vehicle.

The current configuration of the automobile power steering system and I can see the data, can be roughly divided into three categories, (1) a mechanical hydraulic power steering system; (2) an electronic hydraulic power steering system; (3) in an electric power steering system.

Mechanical hydraulic power steering system

1, mechanical hydraulic power steering system is generally composed of hydraulic pumps, tubing, pressure flow control valve, V transmission belt, oil storage tank and other components.

2, regardless of whether the car is turning, the system will work, and when the large steering speed is low, the hydraulic pump needs to output more power to obtain a larger power. Therefore, it also wastes resources to a certain extent. Can recall: when driving such a car, especially when the low speed turn, I think the direction is relatively heavy, the engine is also more effort. And because of the pressure of the hydraulic pump, it is easier to damage the power system.

Also, the system consists of hydraulic pump and pipeline and oil tank mechanical hydraulic power steering, to maintain pressure, regardless of whether or not they need power steering system, always in working condition, high energy consumption, where this is one reason why the consumption of resources.

The general economic type cars use mechanical hydraulic power system more.

Two ¡¢ electronic hydraulic power steering system

1, main components: oil tank, power steering control unit, electric pumps, steering machines, power steering sensors, etc., in which the power steering control unit and the electric pump is a whole structure.

2 ¡¢ working principle: the electronic hydraulic power steering system overcomes the shortcomings of the traditional hydraulic power steering system. The hydraulic pump the engine no longer rely on the belt drive directly, instead of using an electric pump, all its working condition is the most ideal state by the electronic control unit according to the vehicle speed and steering angle calculated signal. Simply said, in a low speed steering, electronic control unit drives the electronic hydraulic pump running at high speed and large power output, the driver hit the steering effort; when the car in high speed, the hydraulic control unit of electronic hydraulic pump operation at low speed driving, in does not affect the high-speed steering at the same time, save a part the power of the engine.

Three, electric power steering system (EPS)

1, the English full name is Electronic Power Steering, referred to as EPS, it uses the power generated by the motor to help the driver for power steering. The composition of the EPS, different cars, although the structural components are different, but generally similar. The utility model is composed of a torque (steering) sensor, an electronic control unit, an electric motor, a speed reducer, a mechanical steering gear, and a livestock battery power supply.

2, the main working principle: car steering, torque (turning) sensor will "feel" to the steering wheel torque and quasi rotation direction, these signals through the data bus to the electronic control unit, control unit according to the driving torque, intends to transfer the direction of the data signal, send out instruction to the motor controller. Thus the motor will rotate according to the torque output need corresponding size specific, resulting in power steering. If you do not turn, the system does not work and is in the standby (sleep) state and waits for the call. Because of the working characteristics of the electric power steering, you will feel like driving such a car, a better sense of direction, more stable at high speed, as the saying goes, the direction is not waving. And because it doesn't work without turning, it also saves energy to some extent. General luxury cars use this kind of power steering system more.

Four, how to maintain the power steering system?

1, mechanical, hydraulic, regular inspection must pay more attention to the storage tank in the booster oil can not be missing, in addition, as far as possible not to kill, bending time is too long. In addition, pay attention to whether the steering is heavy and whether there is noise or not. If this is the case, please check the problems such as the type of oil pump, V belt and internal pressure.

2, electronic hydraulic type, usually should pay attention to how much oil, when the warning light amount, must pay attention to inspection.

3, electric power system, although it is relatively simple structure, but the maintenance is not visible to the naked eye, and if there is the direction of heavy, do not listen to the problem, the way is to take the amount of equipment. People always think that the car, more electronic / electric vehicles, under certain conditions, it is becoming more and more arrogant. Failure, maintenance, of course, than mechanical trouble, or even more money. But advanced things, armed with your car, you are also very beautiful heart.