The principle of operation of the ignition system
The task of the ignition control unit is to regulate the ignition timing, based on the databases previously stored in the memory.
the Transporter T4 ignition system has an appropriate database, the optimal ignition timing depends on the operating conditions of the engine.
The measured values are crankshaft speed, engine temperature and throttle position. Based on these values, the current motor load is determined. The databases of the ignition system stored in the memory of the microprocessor module are determined experimentally on special stands, then “run in” during road tests, as a result, an optimal mode is obtained in terms of fuel consumption, exhaust gas toxicity and dynamic qualities.
During the journey, the engine speed, engine temperature and load are signaled to the microprocessor module, which, based on a database, sets the optimum ignition timing for the instantaneous operating conditions.
If one or more sensors fail, the system remains operational in the "limited efficiency" mode.
In this case, there is a drop in the dynamic qualities of the car, as a result - a drop in engine power, while fuel consumption will also increase. The high voltage converter combines the ignition coil, switch and power amplifier module in one housing. This increases the reliability of operation, as well as reduces voltage losses on electrical wires and connectors.
The location of the nozzles on the T4 car. Removing the fuel filter on the Volkswagen T4 .