With the rapid development of automobiles, automobile manufacturers have made great efforts in the functions, software and hardware of automobiles, and more sensors will be used in all high-end automobiles:
1. Crankshaft position sensor
Function: It is the most important sensor in the computer controlled ignition system. Its function is to detect the top dead center signal, engine speed signal, and crankshaft angle signal. It is input to the computer to control the cylinder ignition sequence and make the best ignition time command
Type: electromagnetic induction type Hall effect type photoelectric effect type
2. Camshaft position sensor
Function: collect the valve camshaft position signal and input it to the ECU, so that the ECU can identify the top dead center of the compression stroke of cylinder 1, that is, provide the cylinder judgment signal (the cylinder judgment signal is the only basis for the ECU to conduct the injection timing and sequence control), so as to carry out the sequential injection control ignition timing control and deflagration control. At this time, it is also used to identify the first ignition time.
Type: electromagnetic induction type Hall effect type photoelectric effect type