丰田发动机点火正时讲述（TOYOTA ignition timing tells）.docVIP

丰田发动机点火正时讲述（TOYOTA ignition timing tells） First, computer control ignition advance Control Overview The TOYOTA computer controlled ignition advance system has replaced conventional mechanical and vacuum advance systems when engines In operation, computer reference, engine speed, water temperature, speed, air flow, and air conditioning load are given to the computer Give correct ignition advance angle. Two. Control instructions (1) distributor ignition system; (two) no distributor ignition system (Supra, Turbo); (1) distributor ignition system; The distributor disk is provided with a permanent magnet and a pickup coil, where the eccentric shaft is positioned when the engine is in operation at startup The signal is sent from the distributor to the computer, the G1 (G2) terminal, and the engine running signal is sent to the computer by the distributor NE terminal. The computer receives the NE and G signals from the distributor to control the primary side circuits ON and OFF. When computers send letters When the number is on the ignition (Ignitor) IGT terminal, control the primary side circuit OFF; at the same time, the igniter delivers IGF signals to the computer, the computer provides voltage to the IGF circuit, when the primary side of the circuit OFF stands Moment control voltage of IGF ground. When the engine is running (voltage or to IGF from 0.60 to 1.70 Between) (two) no distributor ignition system (Supra, Turbo); The Supra Turbo car is equipped with a distributor direct ignition system, an eccentric axle position sensor on the car, There are 3 sets of pickup coils (Pickup, Coil) to detect the speed and eccentric axle position of the engine, and the computer is eccentric Shafts (G1 and G2 coils) and speed (Ne coil) signals to control the three sets of ignition coils (1~6 cylinders, 5~2) Cylinder, 3~4 cylinder) ignition. Three 、 maintenance test Distributor ignition system When ignition system is unable to fire, refer to the following procedure: 1. Check the impe