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1. Abbreviation for Automotive Fog Lamp
Automotive Fog Lamp When driving in harsh weather conditions such as fog, snow, and heavy rain, or in environments filled with smoke and dust, front fog lamps must be used to illuminate the road ahead and ensure driving safety. In recent years, fog lights have been often placed on the front bumper in terms of styling design.
2. Abbreviations for various sensors in automobiles
Temperature sensors:
1. Cooling water temperature sensor: THW
2. Intake temperature sensor: THA Pressure sensor:
1. Intake manifold pressure sensor: CMP
2. Crankshaft angle sensor: CKP Speed sensor:
1. Crankshaft speed (crankshaft position sensor): CKPS
2. Steering wheel angle sensor: CMP
3. Intake air flow sensor: MAF displacement direction Sensor:
1. Throttle position flow sensor English abbreviation: TPS
2. Camshaft position sensor English abbreviation: CMPS The functions and fault manifestations of each sensor
1 At present, there are mainly two types of air flow sensors: hot wire air flow sensors and hot film air flow sensors, which are generally installed between the air filter and the throttle valve. Function: Measure the intake volume of the engine and input the signal into the ECU as the main control signal for fuel injection and ignition control. Fault mode: After the malfunction of the air flow sensor, the cars electronic control unit (ECU) cannot detect the true intake air volume, resulting in an imbalance of the mixture, leading to unstable engine idle, weak driving, black smoke, and sometimes shifting gears and stalling. 2. The intake pressure sensor, abbreviated as MAP, is installed on the intake manifold and is
3、 The throttle position sensor includes switch contact type throttle position sensor, linear variable resistance throttle position sensor, and comprehensive throttle position sensor. The throttle position sensor is installed on the throttle valve to detect the opening of the throttle valve. Function: The main function of the throttle sensor is to provide feedback on the opening of the throttle valve, thereby controlling the fuel injection amount during acceleration. Fault mode: Abnormal idle operation of the engine (such as too high or too low idle, unstable idle, easy stalling at idle) or abnormal acceleration of the engine (engine shaking during acceleration, delayed acceleration response, etc.), sometimes leading to intermittent shaking of the engine during operation.
4、 The camshaft position sensor is used to detect the angular position of the camshaft, and the engine control module (ECU) uses this signal to determine the cylinder sequence of the engine. Function: Detect the position of the camshaft, determine the top dead center of the compression stroke of cylinder one, control the sequence of fuel injection and ignition. Fault mode: When the camshaft p
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