Scooter is the choice of mechanical hydraulic steering wheel
I have been working in the automobile industry for 13 years, and the qualifications are old enough; I have been forced to complain for 13 years, and I have not yet turned my career. I am now an extraordinary ant...I am Brother Marco, a different firework in the automobile industry!
Relevant investigations show that the steering wheel is heavy at low speeds and light at high speeds. I don't know if it will have an impact on high-speed driving, such as causing the car to sway easily, or the steering wheel is too heavy at low speed, resulting in poor operation. Electronically assisted cars are just the opposite. The steering wheel is light at low speeds, and the steering wheel is adjusted heavier at high speeds. Therefore, the driving control is better, and it is not easy to cause problems at high speeds.
When buying a car, many friends are often entangled in the question of which is better, whether the steering wheel hydraulic assistance or electronic assistance is better, and many people worry that the electronic power steering is not safe enough, because in extreme cases the electronic power steering system will report a fault code, which may cause the vehicle electronic steering The booster fails and the car loses control.
In fact, because in some unpredictable conditions, some of the vehicle's electronic power assist system will falsely report the fault code, which will cause the vehicle to lose the steering assistance. This situation can be said to be very dangerous for the vehicle in motion, but , Is electronic power steering really useless?
First of all, what is the difference between hydraulic power steering and electronic power steering.
In terms of basic principles, their principles are the same. In other words, hydraulic power uses hydraulic pressure to provide power for steering, and what we call electronic power steering is nothing more than adding an electronic system on this basis. So from here, they are actually hydraulic power steering systems. In this regard, we can find out by opening the engine compartment cover that their positions may be quite different even on different models, but there is nothing wrong with the fact that there are power steering oil cans.
Secondly, hydraulic power steering.
The most obvious advantage of pure mechanical hydraulic assistance is that the road feels clear, and any road condition information will be fed back to the steering wheel through tire vibration. But the same is that it has several shortcomings that are also obvious. Now let's talk about its shortcomings. On the one hand, the steering wheel of hydraulic power steering is relatively heavy, which may not meet the requirements of female drivers.
On the other hand, because hydraulic power is always connected to the engine, whether you use a steering wheel or not, it will increase fuel consumption. In addition, because the viscosity of hydraulic oil is different in winter and summer, the hand feel will be very different when turning in different seasons.
In addition, for hydraulic power steering models, the steering wheel will be relatively loose when the engine power is high, and the steering wheel will become heavier when the engine power is low. This is different from our envisioned "low-speed steering wheel light" and "high-speed steering wheel sinking". On the contrary, the driving needs of the company do not meet our expectations. Especially when the engine is idling, such as reversing or U-turning, the hydraulic boost is the weakest. If you don’t use force, you can’t turn the steering wheel at all. Therefore, if a female driver with low strength drives this kind of car, an accident may occur.
Again, electronic power steering.
It just so happens that many drivers are not optimistic about electronic power steering, which makes up for the shortcomings of hydraulic power steering.
On the one hand, although electronic power assistance is still a hydraulic system in essence, it adds a set of electric motors and electronic control units to the traditional hydraulic pump. With this electronic system, car owners can use the sensitivity of the trip computer to the steering wheel. For mediation, the steering wheel can become lighter at low speeds and heavy at high speeds. However, electronic assistance also has disadvantages, that is, the road feel of the steering wheel will deteriorate, and the information obtained by the steering wheel may no longer be true.
On the other hand, some high-end vehicles are now beginning to install a more advanced electronic power steering system. This system is no longer a traditional hydraulic system. Its steering power is provided by an electric pump. This system better amplifies the electronic hydraulic The advantages of the power-assisted system, but also make its shortcomings invisible, the complete electronic power steering system no longer has a real sense of road, only pure driving computer simulation.
The steering wheel is a component that car owners usually come into contact with frequently when driving, so the choice of direction assistance is still very important. Of course, this also depends on the driving experience the car owner wants. However, the development is moving forward. The power steering of automobiles has changed from hydraulic to electronic to pure electric. Does this indicate that hydraulics will eventually be abandoned, and electronic steering represents the trend?
Previous cars did not have any direction assistance. In family cars, the simple mechanical steering makes people feel unpleasant to drive. For female drivers, turning the steering wheel may consume a lot of physical energy, which is not easy at all. The most common steering structure in automobiles today is the rack-and-pinion steering structure. Its working principle is as follows: when the steering wheel is turned, the steering gear drives the steering rack to move left and right, and the steering tie rod changes the direction of the wheel to control it. The car turns left and right.
The advantages of rack and pinion pure mechanical steering are low cost, simple structure, clear road feeling and strong reliability. But it's really heavy to drive! Nowadays, even tractors use hydraulic power steering. What's the use of this iron rod?
Hydraulic power, as the name implies, is to add a hydraulic power system to the original structure of the mechanical steering. Its structure is like this: The working principle of the hydraulic power steering system is to provide pressure to drive power through a hydraulic pump (driven by the engine belt) The piston in the cylinder generates auxiliary power to push and pull the steering rod, allowing the driver to steer more briskly. Its advantages are very obvious, such as clear road feeling and strong steering force;
