Introduction to ABS ASR ESP[汽车修理知识]

Install nowABS(Anti-lockBraking System) Cars have become quite common, and with thecarThe requirements for safety performance are getting higher and higher, and some more advanced safety devices with a wider range of protection have come out one after another, of which ASR (driving anti-skid system, also known as traction control system) and ESP (electronically controlled driving stability system) are the most Representatively, their birth has further improved the safety performance of automobiles.
ASR: Drive anti-skid system (or traction control system)
The traction control of the car can be reduced byThrottleOpening to reduce engine power or byBrakeControl and wheel skidding are used to achieve the goal. Cars equipped with ASR integrate these two methods to work, that is, ABS/ASR. The role of ASR is to control the sliding force within a certain range when the car accelerates, thereby preventing the drive wheel from sliding quickly. One of its functions is to improve traction; the other is to maintain the driving stability of the car. Driving on slippery roads, the drive wheels of a car without ASR will easily slip when accelerating; if it is a rear-driven vehicle, it is easy to flick its tail, and if it is a front-driven vehicle, it is easy to lose control of the direction. When there is ASR, the car will not have or can alleviate this phenomenon when accelerating. When turning, if the driving wheel slips, the entire vehicle will shift to one side. When there is ASR, the vehicle will steer along the correct route.
In a car equipped with ASR, from the accelerator pedal to the gasoline engine sectionValveThe mechanical connection between the (diesel fuel injection pump operating rod) is replaced by an electronic throttle device.when

Install nowABS(Anti-lockBraking System) Cars have become quite common, and with thecarThe requirements for safety performance are getting higher and higher, and some more advanced safety devices with a wider range of protection have come out one after another, of which ASR (driving anti-skid system, also known as traction control system) and ESP (electronically controlled driving stability system) are the most Representatively, their birth has further improved the safety performance of automobiles.
ASR: Drive anti-skid system (or traction control system)
The traction control of the car can be reduced byThrottleOpening to reduce engine power or byBrakeControl and wheel skidding are used to achieve the goal. Cars equipped with ASR integrate these two methods to work, that is, ABS/ASR. The role of ASR is to control the sliding force within a certain range when the car accelerates, thereby preventing the drive wheel from sliding quickly. One of its functions is to improve traction; the other is to maintain the driving stability of the car. Driving on slippery roads, the drive wheels of a car without ASR will easily slip when accelerating; if it is a rear-driven vehicle, it is easy to flick its tail, and if it is a front-driven vehicle, it is easy to lose control of the direction. When there is ASR, the car will not have or can alleviate this phenomenon when accelerating. When turning, if the driving wheel slips, the entire vehicle will shift to one side. When there is ASR, the vehicle will steer along the correct route.
In a car equipped with ASR, from the accelerator pedal to the gasoline engine sectionValveThe mechanical connection between the (diesel fuel injection pump operating rod) is replaced by an electronic throttle device.whensensorWhen the accelerator pedal position and wheel speed signal are sent to the unit (CPU), the control unit will generate a control voltage signal, and the servo motor will readjust the position of the throttle valve (or the position of the diesel engine joystick) according to this signal, and then the position The signal is fed back to the control unit to adjust the brake in time.
ESP: The full English name of the Electronic Stabilty Program is Electronic Stabilty Program, which is an extension of the two system functions of ABS and ASR. Therefore, ESP can be regarded as the most advanced form of anti-skid devices in current automobiles.
ESP system consists of control unit and steeringsensor(monitorsteering wheelSteering angle), wheel sensor (monitoring the speed rotation of each wheel), side slip sensor (monitoring the state of the car body rotating around the vertical axis), lateral increasespeed sensor(Monitoring the centrifugal force of the car when turning) and other components. The control unit judges the running state of the vehicle through the signals of these sensors, and then sends out control commands.
The difference between cars with ESP and ABS and ASR is that ABS and ASR can only react passively, while ESP can detect and analyze car conditions and correct driving errors to prevent problems before they occur. ESP is particularly sensitive to oversteer or understeer. For example, when a car turns left and oversteer when the road is slippery (turning too fast), it will flick to the right. The sensor will quickly brake the right front wheel to restore attachment when it senses the slip. Work hard to produce an opposite torque to keep the car in the original lane.
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