Application of the knock sensor function car sensors: detecting engine block vibration, for the electronic controller to identify engine knock conditions. Principle: The knock sensor is an acceleration sensor. It is mounted on the engine block can be put in a more just. Sensitive element of the sensor is a piezoelectric crystal, the price of automotive sensors, engine knock, engine vibration transmitted through the mass with the sensor onto the crystal inside. Piezoelectric crystal mass with the pressure generated by the vibration, Anhui automotive sensors, voltage is generated in two polar surfaces, automotive electronic sensors, the vibration signal into a voltage output. Idle regulator functions: to provide the idle bypass air passage, and by changing the passage sectional area of ??the impact of bypass gas to achieve closed-loop speed control of the engine idling condition. Principle: in the idling regulator is available on a freely rotatable shaft of the permanent magnet is rigidly connected with a permanent magnet rotating slider in the cable coil driven rotation, the slider rotates. Angular position of the slider determines the opening of the bypass flow channel actuators, sensors on the car, which can adjust the size of the bypass air quantity. An electronic controller is supplied to the actuator by varying the duty cycle of the pulse signal determines the angular position of the slider to determine the bypass air flow. There are three commonly used classification: ⒈ by physical classification of the sensor can be divided into displacement, force, velocity, temperature, flow, gas composition and other sensors ⒉ sensor works according to classification, can be divided into resistors, capacitors, inductors, voltage, Hall, optoelectronics, grating, thermocouples and other sensors. ⒊ according to the nature of the sensor output signal classification, can be divided into: the output switch ("1" and "0" or "on" and "off") of the switch sensor; output as analog sensor; output pulse or code The digital sensor. Anhui automotive sensors, Xinfeng, automotive sensors supply provided by the Xinxiang City Xinfeng purification Sensing Technology Co., Ltd. Anhui automotive sensors, Xinfeng, automotive sensors supply Xinxiang City, Xinfeng purification Sensing Technology Co., Ltd. ( www.xfcgq.com) (www.xfcgjh.com) this year introduced a new upgrade, the above picture is for reference only, please call the telephone or pictures on this page, for the latest information, contact: Li.