How many sensors are there on the car?
Not the same car, the most, hundreds of cars,The engine speed sensor has a general sensor: inlet pressure intake air flow temperature ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` solar term door position crankshaft position camshaft position detonation temperature oil temperature ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` ` oil level in the oil pressure phase and so on.Body: ABS wheel speed sensor. The airbag, air curtain wheel sensor. The pressure sensor, the fuel level sensor. The interior temperature sensor D and so on! ` ~!
Crankshaft position sensor, camshaft position sensor, temperature sensor, knock sensor, outdoor temperature sensor, wheel speed sensor, intake flow sensor (intake pressure sensor), solar term door position sensor, oil float position sensor, the air-fuel ratio sensor, oxygen sensor, oil pressure, photoelectric sensor, sensor and so on Holzer.In fact, there are many differences between different car systems, very specific, can not say for a while.
Car sensors used to be used only on engines, but now they are extended to chassis, car bodies and light electrical systems. These systems employ more than 100 sensors. Among a wide variety of sensors, the common ones are:1. Sensors used in electronically controlled fuel injection enginesThe intake pressure sensor reflects the absolute pressure change in the intake manifold and provides a reference signal for calculating the duration of the injection to the ECU (engine ECU);Air flow sensor: measure the amount of air inhaled by the engine and provide the ECU as the reference signal for the injection time;Throttle position sensor: measures the angle of throttle opening and provides ECU as a reference signal for oil removal, fuel / air ratio control, and ignition advance angle correction;Crankshaft angle sensor: detects crankshaft and engine speed and provides ECU as reference signal to determine ignition timing and operation sequence;Oxygen sensor: detects the concentration of oxygen in the exhaust gas and provides a reference signal for the ECU to control the fuel / air ratio near the optimum value (theoretical value);Intake air temperature sensor: the intake temperature is detected and supplied to the ECU as a basis for calculating the air density;Water temperature sensor: check coolant temperature, provide engine temperature information to ECU;Detonation sensor: installed on the cylinder, specially detects the engine deflagration condition, provides for the ECU according to the signal adjustment ignition advance angle.2 、 sensors used in chassis controlThese sensors are mainly used in transmission, steering, suspension and ABS.Transmission: there are speed sensors, temperature sensors, shaft speed sensors, pressure sensors, etc., direction sensors have corner sensors, torque sensors, hydraulic sensors;Suspension: speed sensor, acceleration sensor, body height sensor, side tilt sensor, corner sensor, etc.
