GL8点火控制系统(国外英文资料).doc

GL8点火控制系统(国外英文资料) Shanghai buick car ignition control system is mainly composed of ignition control module (ICM), crankshaft position sensor, ignition coil, 7 x 24 x crankshaft position sensor, power system control module of PCM and its all attachment. One, ignition control module ICM Ignition control module has the following functions: through 7 x pulse signal as the crankshaft position sensor to determine the correct firing order (the ignition sequence determination was conducted on engine starting), when the engine running, the ignition control module in accordance with the appropriate firing order continuously trigger ignition coil; Send the 3X crankshaft position sensor reference signal to PCM so that PCM can use the signal to determine engine speed and calculate the ignition timing Angle. The relevant circuits are as follows: 3X reference signal high state (circuit 430). 7 x crankshaft position sensor sends a signal to the ICM, and 3 x reference signal generated by the ICM and send to the PCM, PCM this signal is used to calculate crankshaft position and engine speed (is also used to trigger the injector). 2.3 X reference signal low state (circuit 453). This circuit is ground through ICM and assures that there is no voltage drop between ICM and PCM. Bypass control circuit (circuit 424). At the initial start, ICM controls the ignition. PCM for camshaft position sensor and 7 x crankshaft position sensor of the sync pulse signal (the signal indicator 1 cylinder piston and the location of the inlet valve), the signal from the PCM received the same time, offer by-pass control circuit 5 v voltage (which usually occurs in front of the crankshaft of 1-2 turns), make the ICM control ignition (to guarantee performance, ICM has a fixed ignition advance Angle). Ignition control (IC) circuit (circuit 423). After the engine starts, the PCM controls the ignition. PCM USES this circuit to trigger ICM based on the ignition advance Angle required by the crankshaft position sens