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speedometer cable adapter key
For speedometer cable adapter key is the most basic function of the car central locking system is key linkage locking and unlocking. Drivers can lock or open other doors while locking or opening their own doors, which not only provides convenience for drivers, but also improves vehicle safety.
Overview of cruise control system:Vehicle cruise control system, also known as constant speed control system, speed control system and auto drive system, is a device that automatically adjusts the throttle opening of the engine according to the driver's preset driving speed, changes the power output of the engine, and makes the vehicle drive at a set speed at a constant speed. When the vehicle is cruising, the cruise control system can automatically adjust the throttle opening according to the change of vehicle driving resistance, without the driver frequently stepping on the accelerator pedal, which greatly reduces the driver's fatigue intensity.
Composition and working principle of cruise control system:The automobile cruise control system is a closed-loop control system, which is mainly composed of sensors (vehicle speed sensor, engine speed sensor), control switches (cruise switch, main switch speed setting switch), automobile cruise control unit, actuator and other components. When the vehicle cruise control system works, the cruise control unit calculates the difference between the two speeds by comparing the cruise speed set by the speed setting switch with the actual speed input by the speed sensor, determines the size of the throttle opening, controls the actuator to adjust the size of the throttle opening, and quickly adjusts the actual speed to the speed set by the driver, so as to realize the constant speed driving of the vehicle.
For speedometer cable adapter key is the operation of vehicle cruise control system should meet two conditions: first, the minimum speed limit, which is generally 40kmlh, and some models have higher speed requirements; Second, the car should have a certain load, that is, the driving wheel of the car should contact the ground. If the driving wheel is lifted with a lift, the cruise control system will not work.
Signal circuit of automobile cruise control system:
(1) Vehicle speed sensor signal circuit combination instrument cluster - vehicle speed sensor - cruise control unit terminal 20 → cruise control unit.
(2) Throttle position sensor signal circuit throttle position sensor - cruise control unit terminal 23 → cruise control unit.
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