Monomotronic and KE-Motronic
Mechanical and vacuum adjustment of the ignition ensures optimal combustion of the working mixture only within narrow limits. With the capabilities of electronics, it is possible to achieve a more accurate and optimal setting of the ignition timing. This reduces fuel consumption and reduces the content of harmful impurities in the exhaust gases. The electronics of the control unit selects the most accurate ignition timing. This is done in accordance with the programmed values, which are stored in the memory of the control unit as a data array. Thus, the control unit performs the following functions:
The adjustment of the ignition timing, which depends on the engine speed and its load, is no longer carried out in the distributor. The distributor does not have a vacuum chamber, and the distributor shaft is made as a single unit. The recesses in the distributor rotor blend are located as follows. that the ignition pulse can be sent 60°BTDC. Within a given interval (up to 60°) the control unit processes information about the engine speed (according to the sequence and frequency of ignition pulses) and throttle position (according to the resistance value of the throttle potentiometer) and determines the optimum ignition timing.
There are corrective programs for operation in the modes of engine start, warm-up, coasting, etc.
Knock control is possible, which is carried out for engines equipped with the KE-Motronic system always using the highest possible ignition advance, which corresponds to the best power delivery.
In conclusion, we note that there is an exchange of data with the injection system. For this reason, some sensors are used twice.
Visitor comments