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How automotive sensors work
The working principle of the automotive sensor is to operate the car in various conditions of information, such as speed, various media temperature, engine operating conditions, etc., into an electrical signal to the computer, so that the engine in the best working condition.
Automotive sensors used to be used solely on the engine, but have been extended to the chassis, body and lighting electrical systems. There are more than 100 types of sensors used in these systems.
Among the wide variety of sensors, the following are common.
1, intake pressure sensor: reflecting changes in the absolute pressure size within the intake manifold, is to the ECU (engine electronic control unit) to provide a benchmark signal for calculating the duration of fuel injection.
2, air flow meter: measuring the amount of air drawn in by the engine, provided to the ECU as a benchmark signal for the injection time.
3、Throttle position sensor: measures the angle at which the throttle is opened and provides the ECU with a reference signal for fuel cut-off, fuel/air ratio control and ignition advance angle correction.
4、Crankshaft position sensor: detects the crankshaft and engine speed, and provides the ECU with a reference signal to determine the ignition timing and working order.
5、Oxygen sensor: detects the oxygen concentration in the exhaust gas and provides the ECU with a reference signal to control the fuel/air ratio around the optimum value (theoretical value).
Automotive sensors,How it works
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