VERFAHREN UND VORRICHTUNG ZUM BETREIBEN EINER FREMDGEZUENDETEN BRENNKRAFTMASCHINE

摘要

1. Process for the operation of a spark-ignited internal-combustion engine, in particular in a motor vehicle, with an ignition system, a fuel metering system and an exhaust-gas turbocharger, the exhaust gas turbine of which is fed the exhaust gas from the combustion chambers of the internal-combustion engine via exhaust pipes and drives a compressor for the combustion air, the ignition being switched off during deceleration of the internal-combustion engine, characterized in that a) deceleration, idling and lower part-load operation of the internal-combustion engine are determined ; b) in each of these operating states, a combustion of the exhaust gas mixture is performed in the exhaust pipes, in which operation c) only single or a plurality of ignition suppressions are controlled in accordance with a given pattern ; d) ignition suppressions are increasingly performed with decreasing charging pressure B and with decreasing load requirement ; e) the controlled throughput of combustion air in the intake line of the internal-combustion engine during the suppression of ignitions is increased by additional controlled opening of the intake cross-section.