The history of human development has a history of about 1.7 million years since the primitive society. The development of chassis technology for automobiles can be minimal compared to the history of human development, but it has a history of more than 100 years. The technology of the various dish systems, including brakes, suspensions, steering, transmissions, etc., is now quite mature.
And what are the developments and changes in the chassis technology of electric vehicles? The electric car itself is a huge technological development, people get rid of the traditional car power and turn it into electric. Its chassis technology can be said to be a combination of old and new. What are the new ones?
First, the electric control moves. The car brake system is a series of special devices for a certain part of the car, mainly the wheels, which exerts a certain pressure and thus forcibly brakes them. Mainly to ensure safety and change the speed of the car. Unlike traditional car brake systems, electric vehicles do not use the motor as a vacuum source, so the brake boost is naturally a difficult point.
The broader solution today is to use a vacuum booster as a power-assisting actuator and an electric vacuum pump as a source of vacuum, but this has some drawbacks. Thus, a new source of power, electricity, began to be adopted. Bosch, a well-known auto parts supplier, introduced an electromechanical booster, the iBooster. The invention of this auto parts brought many new functions that can be intelligentized. It uses electronic technology to achieve braking through electronic control. Its reaction time is also three times faster than the traditional car brake system.
Second, the steering mode is selected. The steering system of a conventional fuel vehicle requires the engine to be driven to provide hydraulic assistance. But now the fuel cars are already electric power steering, that is, EPS, EPS is very important for electric vehicles. With the EPS with ECU controller, active control can be achieved, that is, the driver does not need to control the steering wheel to allow the car to automatically turn.
Features such as automatic parking can be implemented and these features are innovative. The steering wheel is an important part of the driver's driving of the car, and is an important tool for the driver to sense the driving condition of the vehicle while driving the vehicle. Different drivers may have different requirements for the steering wheel, but in general they all want to be light and not lightweight, that is, they can know some road feelings. This feature really adds to the car's personal choice.
Third, a highly controllable suspension. When encountering uneven roads, the driver may have had the hope that the chassis of the car can be adjusted according to the level of the road. For electric vehicles, the water repellency of the motor is better than that of a conventional engine. In the modification market, there have been pneumatic suspensions that can actively control the lift.
It mainly uses the electric control air pump to inflate or deflate the airbag to achieve the lifting height and the lowering of the suspension height. However, this method will destroy the interior shape and interior parts of the original car. On the basis of the intelligent large screen, an electronically controlled pneumatic suspension can be configured to realize the adjustment of the suspension height.
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