Ignition system with built-in coil
1. Ignition switch; 2. Distributor; 3. Lid and slider; 4, 5. Ignition coil (without electronic unit); 6. To the tachometer; 7. Electronic block; 8. Winding of the induction sensor; 9. Rotor
DIS ignition system for 3.4L V6 engines
1. From the battery; 2. Ignition coil; 3. Candle; 4. Cylinders NN1–6; 5. From sensors; 6. Crankshaft rotation sensor; 7. Camshaft rotation sensor
Cars with 4-cylinder engines up to 1997 are equipped with a contactless ignition system. In the ignition systems of cars with V6 engines of 3.4 liters and with 4-cylinder engines of 1998, the ignition system is without a distributor, with individual ignition coils.
The non-contact ignition system includes an ignition key, an electronic unit, a battery, a coil, a primary and secondary circuit, a distributor and candles.
The system is controlled by the processor unit (ECM). The electronic unit is mounted on the right side of the engine compartment under the air duct.
As part of the ignition system without distributor (further DIS-system) includes camshaft and crankshaft rotation sensors, ignition coils and an electronic unit. When the engine is started, the processor unit generates identification signals for each cylinder, which trigger an electronic module that switches the ignition coils. The processor unit automatically adjusts the ignition timing in response to signals from various vehicle sensors (vacuum sensors, flow velocity, damper angle, detonation, etc.). The electronic module distributes the signals to the respective coils and sets the delay time until the coil is switched in accordance with the current in the primary circuit.
The DIS system uses two spark ignition. A spark appears simultaneously in two cylinders, the piston of one performs a compression stroke, and the other - an ejection stroke. Moreover, in the first of these cylinders, the power of the spark discharge is much higher than the power of the discharge in the second, in which the spark is used only for afterburning the remnants of the unburned combustible mixture. On V6 engines, the spark is created in pairs of cylinders 1-4, 2-5, 3-6, and in 4-cylinder engines - 1-4 and 2-3.