Overseas trend
Accompanied by the upgrading of automobiles, and people’s increasingly higher requirements for vehicle safety, comfort, and economic performance, the braking devices that protect the safe driving of automobiles have gradually evolved from the initial simple mechanical brakes to the current ABS. (Anti-lockBrakeSystem) anti-lock brake system. However, there are still some problems with ABS. For example, it is difficult to accurately measure the speed of the body and wheels, and it is difficult to achieve accurate control of the braking force. These drawbacks make it possible for vehicles equipped with ABS to meet braking requirements accurately in ideal road conditions. It is difficult to meet requirements on muddy mountain roads with poor road conditions. At this time, another auxiliary braking system is urgently needed on the vehicle to ensure the safety of the vehicle.
In this case, the electromagnetic braking technology has established its position in the automotive auxiliary braking system with its features of no wear, rapid response, stable braking and compatibility with the ABS system.
The application of electromagnetic brake system in the automobile can save the original brake oil system on the car, greatly reduce the weight of the car, be compatible with the ABS system, and control the braking force faster and more accurately. Compatible with other on-board electronic control systems, it is easy to increase the intelligence of the car; it can reduce the brake dust and improve the environmental protection of the vehicle. These advantages of the electromagnetic brake system determine that it will inevitably become a new trend in the future development of the automotive brake system.
As early as the beginning of the last century, a group of western countries represented by France took the lead in starting the research on electromagnetic braking technology and the development of related products. Shortly afterwards, the early “Electric Eddy Retarder†was born and used as an auxiliary brake device to install and use heavy-duty trucks and large passenger cars in some countries in Western Europe, after more than 40 years of continuous improvement and use in various models. Prove that eddy current retarder is technically feasible, and its safety has gradually been recognized by the automotive industry.
Nowadays, the application of electromagnetic brake technology in retarders has become relatively mature. Retarders have been used as standard parts in passenger cars and medium- and heavy-duty trucks in developed countries such as Europe, the United States and Japan.
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