Which is better, mechanical, hydraulic, or electric

Advantages of mechanical hydraulic power steering:

The technology is mature and stable, high reliability (even if the vehicle hydraulic system fails and loses the power assist, it can also rely on the traditional rack and pinion mechanism for steering), the steering power is large, the size of the model 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.

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.

Advantages of electric power steering:

The system structure is streamlined, the quality 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.

Electric power steering system disadvantages:

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.

Hello, there are pros and cons to each, the mechanical power is not light, relatively stable, and the cost is low, and the electric rib force is light and the cost is high.

Electric power assist is relatively good.

Since the electric power steering system was proposed in the early 80s of the 20th century, as the future development direction of the automotive steering system, it will replace the existing mechanical steering system, hydraulic power steering system and electro-hydraulic power steering system.

Electronic power steering requires the engine to drive a hydraulic oil pump to keep the fluid flowing, wasting some energy. In contrast, electric power steering (EPS) requires only energy from the electric motor when steering operations are required. This energy can come from the battery or the engine, saving energy and reducing fuel consumption.

The electric power steering system uses the "cleanest" electricity as an energy source, completely prohibits hydraulics, and the hydraulic power steering system has no liquid oil leakage. It can be said that the system follows the trend of "greening".

The electric power steering system does not have the oil pump, oil pipe, flow control valve, oil tank and other components required by the hydraulic system, so the number of components is greatly reduced, the installation and configuration workload is reduced, the installation and configuration time is saved, the installation and configuration efficiency is improved, and the environmental pollution is prevented at the same time.

The difference between hydraulic power assist and electric power assist

1. The hydraulic power assist system software is a foot operated hydraulic power assist pump driven by the engine belt, and then the actual effect of azimuth power assist is completed, and this kind of power assist system software is relatively accurate.

After a long period of deposition, the technical level is very complete and stable, and the cost is very low. However, because it is driven by the driving force of the automobile engine to push the oil pump, the dynamic energy loss is relatively high, and the structure of the pipeline is relatively complex (the indoor space utilization rate is large), and the maintenance costs will be generated in the middle and later stages.

2. The working principle of electric power assist is actually similar to that of traditional hydraulic power assist, only a lot of electronic device sensors are added to the hydraulic power assist system software, but its indoor space occupation is relatively small (there is no oil pump, oil pipe, pressure regulator and oil storage tank bottle).

Moreover, the system software can adjust the total flow rate of the pump according to the speed to change the size of the booster, which fills the defect of hydraulic assistance and shows a more linear practical effect.

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 assistance, 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 feeling is clear, and the feel is silky. 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 hydraulic power is relatively stable, while electronic power assist will be better handling. 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.

Each has its own advantages and disadvantages.

Electric power assist makes the driver's handling and driving feel easier and more effortless, and the general electric power assist will also bring changes with the speed and weight, which is in low-speed reverse and high-speed driving.

The weight change of the steering wheel gives the driver a better driving quality.

The disadvantage is that the electric power assist is generally isolated from the road feeling, which is not good for the driver to feel the driving state of the vehicle.

The handling and driving pleasure are also subtracted from the electronic stuff and the fault aspects are also to be considered.

Hydraulic assistance, including electro-hydraulic assistance and ordinary hydraulic assistance, if the two are similar, the advantages are good road feedback and high driving pleasure.

The disadvantages are also obvious, because of the hydraulic power structure, the steering wheel component is heavy, and it will be tired after driving for a long time, and if you drive a 10W compact sedan, it is recommended to have the autonomy EC7, Chery G3, Great Wall C50, Surui, etc.

Joint venture, Avio, Carnival, K2, etc.

I believe many friends know that steering power is divided into two types, one is electric power assistance, and the other is hydraulic power assistance. But when it comes to the comparison of the two systems, everyone has different ideas. So which is better, electronic power assist or hydraulic power assist?

If we want to know the answer, we must first understand what is the difference between hydraulic assistance and electric assistance.

The difference between hydraulic power assist and electric power assist

The hydraulic power assist system uses a mechanical hydraulic power assist pump driven by the engine belt to achieve the effect of directional power assistance, which is relatively accurate. So after such a long period of precipitation, the technology must be very mature and stable, and the cost will be relatively low. However, due to the fact that it relies on engine power to drive the oil pump, the natural energy loss is relatively high, and the structure of the pipeline is very complex (large space occupancy), and the later maintenance must require costs.

The principle of electric power assist is actually similar to that of traditional hydraulic power assistance, except that many electronic sensors are added to the pure hydraulic power assist system, but its space occupancy is relatively small (no oil pump, oil pipe, control valve and oil storage bottle, etc.). Moreover, the system can also adjust the pump flow rate according to the vehicle speed to change the size of the booster, which can be said to make up for the shortcomings of hydraulic assistance, and can present a relatively linear effect. However, since it is an electronic system, if it fails, it will definitely lose its efficacy, and the hydraulic power assist is different, even if the hydraulic system fails, it can still rely on the traditional rack and pinion mechanism for steering.

As for which one is better, it is actually difficult to distinguish between the superior and the inferior, after all, they all have their own advantages. If you want a more stable and mature system, it is certainly right to choose hydraulic assistance, but if you are looking for better steering handling, I believe that electronic assistance will definitely not disappoint you. In addition, technology can be said to be advancing by leaps and bounds, although the fault tolerance rate of electronic equipment still exists, but the future of electronic assistance must be a good momentum.