Abstract: A method for controlling an ignition system for internal combustion engines where the sparking current together with the sparking period can be set to a particular value. The method described here makes it possible for each cylinder in the engine to be supplied with just the amount of ignition energy to meet the momentary requirement of the engine, and consequently a spark plug replacement interval of more than 100,000 km can be achieved. In accordance with the present invention, both the value of the sparking current and the value of its sparking period are controlled independently according to certain engine parameters, in particular load, engine speed and temperature. The method in accordance with the present invention can be applied preferably in an alternating current or high voltage capacitor ignition system.

Abstract: An improved internal combustion engine arrangement for providing increased fuel efficiency, reduced pollution, and an improved starter and generator arrangement. An internal combustion engine having a flywheel for equalizing non-uniformities of engine output torque has a first conventional clutch for shifting gears, and a second controllable clutch between the flywheel and engine for selectively disconnecting and stopping the engine during certain operating states of the vehicle. A combined starter-generator is provided having a toothed, windingless rotor fixed on the flywheel periphery and a stator surrounding the rotor and provided with windings both for generating current, and for imparting rotational force on the flywheel, which in turn starts the engine.