What is the difference between mechanical and electronic power and which is better

Each is good in its own way.

Advantages of mechanical hydraulic power steering:

The technology is mature and stable, and the reliability is high (even if the vehicle hydraulic system.

In case of failure and loss of power assistance, it can also rely on the traditional rack and pinion mechanism for steering), the steering power is large, and large and small models can be used, and the manufacturing cost is high.

Relatively low, clear road feel, smooth feel, especially some large cars and large SUVs with large steering load, electronic power assist can not meet the needs of steering force, so hydraulic power must be used.

Mechanical hydraulic power steering disadvantages:

Because it relies on engine power to drive the oil pump, the energy consumption is relatively high; The pipeline structure of the hydraulic system is very complex, and the number of valves to control the oil is numerous, which occupies a large space, and the later maintenance requires costs.

Definition of new energy vehicles: It is often referred to as "low-pollution vehicles" in Japan, and in 2001, the Ministry of Land, Infrastructure, Transport and Tourism, the Ministry of the Environment and the Ministry of Economy, Trade and Industry formulated the "Action Plan for the Development and Popularization of Low-Pollution Vehicles". The low-pollution vehicles referred to in the plan include 5 categories, namely:

Vehicles and hybrid vehicles fueled by natural gas.

Electric cars, to methanol.

Clean gasoline vehicles with the strictest standards for fueled vehicles, emissions and fuel efficiency restrictions.

In the United States, new energy vehicles are often referred to as "alternative fuel vehicles".

In April 2016, in order to better promote the development of new energy vehicles, better distinguish and identify new energy vehicles, and implement differentiated traffic management policies, the Ministry of Public Security will use special license plates for new energy vehicles.

On the basis of preliminary research and demonstration, the Traffic Management Bureau of the Ministry of Public Security designed the number plate of new energy vehicles.

model, in order to protect the public's right to know.

The right to participate, condense the wisdom consensus of all walks of life, and solicit opinions and suggestions from the public, and the public can vote for their favorite license plate style from now on.

First of all, the problem of power assisting, the main purpose of power is to facilitate the steering wheel, and when the driver turns the steering wheel, it gives an auxiliary force to make the steering easier. These two types of power assist, to make a long story short, mechanical hydraulic power is a waste of energy, especially when making big bends at low speeds, it also damages the hydraulic system; Electro-hydraulic power assist is better than mechanical, it no longer uses the power of the engine, but uses an electric hydraulic pump, which is also the mainstream way of power assisting;

Can the direction be killed? Why is electric power efficient for fuel efficiency? What is the difference between mechanical and electric assistance**?

Directional assist system for cars?

Mechanical hydraulic power is constant, need to consume a certain amount of gasoline engine power, the size of the vehicle driving high and low speed is unchanged, running at high speed will appear to be particularly light, in the driver is nervous or action mistakes when the vehicle is easy to lose control.

The electric power assist system is completely controlled by the driving computer, the power assist ratio itself can be set, and the power assist coefficient of low speed and high speed is changing, the low speed direction is light, the high speed direction is heavy, and it is more humane.

Mechanical-hydraulic power steering wheel.

Mainly through the oil pump to provide power, so that the steering wheel has a certain power effect, this device was first used in large machinery, and then slowly spread to the car, and the technology is getting better and better. The electronic power steering wheel is mainly powered by the electric motor to generate electrical energy, and has nothing to do with the engine. The mechanical-hydraulic power steering wheel does not stop the pump even when the auxiliary power is not needed, which causes wear and tear on the engine.

Although the electronic power steering wheel does not affect the engine, it is less efficient at reverse rotation than hydraulic power and has a slower response. Some mid-to-high-end cars use electronic power steering wheels, and if the power is adjusted incorrectly, the return to the steering wheel is relatively sluggish. However, due to the relatively high conversion efficiency of the electronic power steering wheel, it has gradually replaced the mechanical hydraulic power steering wheel.

Both power steering wheels have their own advantages and disadvantages.

The main difference between mechanical assistance and electronic assistance is that electronic attention is controlled by a chip, while mechanical assistance is controlled by humans. Of course, the mechanical assist is a little better, because it has a higher degree of control and is more sensitive.

What is the difference between mechanical and electronic assistance? Which good mechanical assistance is transmitted through the mechanical lever, and electronic assistance is better through the electronic assistance.

Electronic assistance is convenient, fast and easy, mechanical assistance is different, he is slower, seems very stupid compared to electronics, stupid, stupid.

Now it is basically electronically assisted, and mechanical assistance and electronic assistance are better than electronic assistance.

Each has its own advantages and disadvantages.

Advantages of mechanical hydraulic power steering: mature and stable technology, high reliability (even if the vehicle hydraulic system fails and loses power, it can also rely on the traditional rack and pinion mechanism for steering), the steering power is large, large and small models can be used, the manufacturing cost is relatively low, the road sense is clear, and the feel is silky, especially for some large cars and large SUVs with large steering loads, electronic power assist can not meet the needs of steering force, so hydraulic power assistance must be used.

Advantages of electric power steering system: the system structure is simple, the mass is small, and the space is less; Only consumes electricity, low energy consumption; The electronic system is responsive and the action is direct and fast.

Disadvantages of mechanical hydraulic power steering: due to relying on engine power to drive the oil pump, the energy consumption is relatively high; The pipeline structure of the hydraulic system is very complex, and the number of valves to control the oil is numerous, which occupies a large space, and the later maintenance requires costs.

Disadvantages of electric power steering system: because the electric motor directly drives the steering mechanism, it can only provide limited assistance and is difficult to use on large vehicles; At the same time, there are many electronic components, and the stability and reliability of the system are not as good as those of mechanical components, especially when the direction of continuous rotation is required in some sites, it may cause the booster motor to overheat and stop working; The lack of road sense information greatly reduces the pleasure of handling in actual driving; The manufacturing cost is high, etc.

Development of mechanical-hydraulic power steering system.

It was born in 1902, which means that it has a history of 100 years. Because the technology is mature and reliable, and the cost is low, it has been widely adopted.

The main components of the mechanical hydraulic power assist system are hydraulic pumps, oil pipes, pressure and fluid control valves, V-type transmission belts, oil storage tanks and so on. This type of power assist converts a part of the engine power output into hydraulic pump pressure, which exerts auxiliary force on the steering system to steer the tires.

Mechanical-hydraulic power steering is good.

The technology is mature and stable, with high reliability (even if the vehicle's hydraulic system fails and loses power, it can also rely on the traditional rack and pinion mechanism for steering), the steering power is large, large and small models can be used, the manufacturing cost is relatively low compared to Kailao, and the road sense is clear and smooth. In particular, some large cars, large SUVs and trucks with large steering loads, electronic assistance cannot meet the demand for steering power.

Both electric and mechanical hydraulic power have their own advantages and disadvantages, mechanical and hydraulic power is relatively stable, and the control of electronic power will be better. Although it is shorter than mechanical hydraulics, the technology is relatively mature, so which one to choose depends entirely on what we are pursuing.

Advantages of mechanical hydraulic power assist system:

1. It is mainly with the help of the engine skin to drive the hydraulic booster pump to work to achieve the effect of boosting, so the effect of boosting is more accurate;

2. Because mechanical hydraulic assistance has appeared for a long time, we can be completely assured in terms of technology;

3. The cost of the mechanical hydraulic power assist system is relatively low, so it will not be very high, and it is a more economical power assist system.

Disadvantages of mechanical hydraulic power assist system:

1. Because the mechanical hydraulic power system is driven by the automobile engine, the engine will consume more gasoline, resulting in a certain amount of energy consumption.

2. The internal structure of the mechanical hydraulic power assist system is very complex, so there will be certain difficulties if we repair or maintain it later.

Electronic power steering is a bit better than hydraulic power steering.

In addition to fuel efficiency, the electronic power steering eliminates belt-driven engine attachments, engine-mounted hydraulic pumps, and chassis-mounted high-pressure hydraulic hoses, making the system much simplified and easier to maintain. In addition, by integrating electronic stability control, the electric power steering system can instantly change the torque assist level in some special situations, increasing the stability of the vehicle. However, the disadvantage is that the feedback is insufficient, such as intense control on the track, and a wide range of high-frequency steering will overheat the motor and increase the failure rate.

The technology of hydraulic aid dismantling is very mature and has high reliability. However, the biggest disadvantage of the hydraulic booster is that the system structure is complex, the hydraulic pressure may leak, the belt, seals, and hoses will slowly age, and the later maintenance cost is high. In addition, the contagious hydraulic booster will consume engine power and increase fuel consumption, so some new cars now change the hydraulic mechanism of the engine drive to a motor drive, that is, an electro-hydraulic booster.

This design is also essentially a hydraulic booster.

How does the electronic assist work

The pressure provided by the motor pushes the piston in the power cylinder, which pushes and pulls the steering lever with paving power, making the driver steer more briskly. This is similar to the principle of mechanical hydraulic assistance. It's just that the oil pump has been replaced with an electric one, which doesn't necessarily consume engine power when it's not working.

In addition, after adding several sensors, Hail Gao Du can adjust the flow rate of the pump source according to the vehicle speed to change the power assist.

Electro-hydraulic power has most of the advantages of mechanical hydraulic power, but also reduces energy consumption and is more responsive. The steering power can also be adjusted according to the main parameters such as turning angle and vehicle speed, which is more user-friendly.

Mechanical, hydraulic power steering.

Mechanical Hydraulic Power Steering System The mechanical hydraulic power steering system is generally composed of hydraulic pumps, oil pipes, pressure valve bodies, V-shaped transmission belts, oil storage tanks and other components. In order to maintain pressure, the system must always be in working condition and consume a high amount of energy, regardless of whether steering assistance is required. Due to the high pressure of the hydraulic pump, it is also easier to damage the booster system.

Generally, economy cars use more systems.

Electro-hydraulic power steering system.

Electro-hydraulic steering power system The electro-hydraulic steering power assist system is generally composed of, steering power control unit, steering machine, steering power assist, etc., in which the power steering control unit and the electric pump are an integral structure. The electro-hydraulic steering power assist system overcomes the shortcomings of traditional hydraulic steering power assist systems. The hydraulic pump it uses is no longer directly driven by the belt, but uses an electric pump, and all its working states are calculated by the electronic control unit according to the vehicle's driving speed, steering angle and other signals to calculate the most ideal state.

To put it simply, when the steering is at low speed, the electronic control unit drives the electro-hydraulic pump to output more power at high speed, so that the driver can play the direction with less effort; When the car is driving at high speed, the hydraulic control unit drives the electro-hydraulic pump to run at a lower speed, which does not affect the need for high-speed steering and saves a part of the engine power.

Electric Power Steering System (EPS).

Electric Power Steering System Electronic Control Power Steering (EPS-Electronic Control Power Steering) can be divided into hydraulic electronic control power steering system (hydraulic EPS) and electric electronic control power steering system (electric EPS) according to different power sources, which uses the power generated by the electric motor to assist the driver in power steering. The composition of EPS is generally the same for different cars, although the structural components are different. Generally, it is composed of torque (steering) sensor, electronic control unit, electric motor, reducer, mechanical steering gear, and animal battery power supply.

It uses the power generated by the electric motor to assist the motorist in power steering. When the car is steering, the torque (steering) sensor will feel the torque of the steering wheel and the direction of the intended rotation, and these signals will be sent to the electronic control unit through the data bus, and the electronic control unit will send action instructions to the motor controller according to the data signals such as the transmission torque and the direction of the intended rotation, so that the motor will output the corresponding size of the rotating torque according to the specific needs, thus producing power steering. If it does not turn, the system will not work and will be dormant waiting to be called.

Due to the working characteristics of electric power steering, you will feel that driving such a car, the sense of direction is better, and it is more stable at high speeds, as the saying goes, the direction does not drift. And because it doesn't work when it doesn't turn, it also saves energy to some extent. Generally, high-end cars use more such power steering systems.

The Citroen Sega sedan is mechanically hydraulic.

Distinguish whether the car is electronic or mechanical power assist, you can turn on the power of the car but do not start the car, at this time the direction of the power is electronic power steering, no power is mechanical power assist. Electronic assistance is sufficient as long as the vehicle has electricity, while mechanical assistance must keep the engine running.