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What are the types of power steering devices and their functions?

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What are the types of power steering devices and their functions?

August 05
17:52 2022

Automobile is already a necessary tool for everyone to travel. Of course, automobile knowledge is essential. In order to facilitate everyone to understand this knowledge, today’s editor will introduce you to the introduction of types and the role of power steering devices. Interested partners can learn about it

(Mercedes-Benz Power Steering Gear)

Types of power steering devices:

There are many kinds of Power steering gear devices. According to the different power transmission media, power steering devices are pneumatic, hydraulic and electric. 1. Pneumatic power steering device pneumatic power steering device is mainly used in some freight cars and passenger cars with a maximum front axle load of 3 ~ 7T and adopting pneumatic braking system. Air pressure should not be used for trucks with extremely high loading quality

1. Pneumatic power steering

The pneumatic power steering device is mainly used in some freight cars and passenger cars with a maximum front axle load of 3 ~ 7T and with pneumatic braking system. The pneumatic power steering device is also not suitable for trucks with extremely high loading quality, because the working pressure of the pneumatic system is low, generally not higher than 0.7MPa. When used on this heavy vehicle, its component size will be too large.

2. Electric power steering

Electric power steering device is a kind of steering device that directly relies on the motor to provide power. This steering device eliminates the complex hydraulic components such as hydraulic pipelines and fluid tanks, and does not use the power of the engine as the power source, but relies on the battery as the power source. The electric power steering system does not need a complex control mechanism. As long as the current magnitude and direction of the motor are changed according to the needs, the automatic control of the power steering device can be realized.

3. Hydraulic power steering device

The working pressure of hydraulic power steering device can be as high as 10MPa, so its component size is very small. The hydraulic system works without noise, with a short lag time, and can absorb the impact from uneven roads. Therefore, hydraulic power steering device has been widely used in all kinds of vehicles at all levels.

 

(VOLVO Power Steering Gear)

What is the function of power steering

The function of the power steering device is to make the steering easier and reduce the fatigue of the driver. The power steering device can also increase the strength of the steering, help the driver better manipulate the direction, and thus reduce the probability of accidents. The power steering system has been widely used in automobile manufacturing in various countries because it makes the steering control flexible and light, increases the flexibility of selecting the structural form of the steering gear when designing automobiles, and can absorb the impact of the road surface on the front wheels. If the power steering system with fixed magnification is designed to reduce the force of turning the steering wheel when the car is parked or running at low speed, when the car is running at high speed, the power steering system with fixed magnification will make the force of turning the steering wheel appear too small, which is not conducive to the direction control of the car running at high speed. 

On the contrary, if the power steering system with fixed magnification is designed to increase the steering force of the car when driving at high speed, it will be very difficult to rotate the steering wheel when the car is stopped or driving at low speed. The application of electronic control technology in automobile power steering system makes the driving performance of automobile reach a satisfactory level. The electronically controlled power steering system can make the steering light and flexible when driving at low speed. When the car turns in the medium and high speed area, it can ensure to provide the optimal power magnification and stable steering feel, so as to improve the handling stability of high-speed driving.

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