Cars are becoming every year more and more sophisticated, new electronic control systems are becoming a priority and new means of active safety. This is due to the fact that most corporations — automakers (Mercedes, BMW, and others) have already reached the maximum in the race engines and transmissions. On most of their cars are already limited by electronics, maximum 250 mph continue to develop this area in the context of civilian vehicles, makes no sense, so it is logical to assume that the active and passive safety has become a top priority for the auto corporations.
The main difference between active safety system from other systems is that it is aimed at preventing the creation of an emergency or accident that might occur due to weather conditions, wrong actions of the driver, vehicle breakdown or other reasons. Passive safety is also used to combat the effects of collisions or other accidents.
Since different types of car corporations are developing their security systems, they may have different names, but the concept and principles of operation will be virtually the same. The main types of active safety systems, for example, Mercedes:
anti-lock brakes (to prevent skidding and increased braking performance on slippery or wet surfaces);
The beauty of ABS is that it can analyze the condition of each wheel individually to select the optimum pressure to prevent wheel lock. Braking to a stop, ABS controls using the pressure in the brake actuator system, as it is aimed directly for inhibition.
traction control (preventing slippage or wheel spin and torque distribution at any stage movement);
ASR helps prevent loss of traction at the wheels of the vehicle via an electrohydraulic system that controls the engine and the brakes in adverse road conditions, or if the driver uses excessive acceleration of the wheels begin to slip on tarmac. ASR system helps the driver to not make mistakes in adverse road conditions, and helps the driver maintain control of the vehicle.
Stability of the car (active safety of the system is responsible for stabilizing the movement direction selected by the driver, under different conditions);
Electronic Brakeforce Distribution (unloading the rear axle of the car, to prevent skidding during emergency braking);
Brake Assist (help the driver by pressing the brake pedal, due to more efficient use of the vacuum amplifier);
There is another class of systems with which the active safety of the car is connected directly, the so-called «assistants» — helpers. They belong to the secondary system, but increasingly are standard vehicles. Briefly introduce some of them:
It is believed that the value of active safety in some cars has been greatly exaggerated. This is partly true, but the responsibility for this lies with unscrupulous managers who are far from the knowledge of technology and the elementary laws of physics and invent various marketing moves, which excludes one or more active systems to reduce the cost of the car, not realizing that this will lead to a catastrophic decrease in reliability system.comments powered by HyperComments
Дата: 07.07.15 Просмотры: 803