Influencing exhaust gas temperature in IC engine comprises variably adjusting time point for opening of combustion chamber outlet valve dependent on piston position

摘要

Influencing the exhaust gas temperature in an IC engine comprises variably adjusting the time point for the opening of the combustion chamber outlet valve dependent on the piston position. An Independent claim is also included for an apparatus for influencing the exhaust gas temperature in an IC engine comprising an exhaust gas purification device located in the exhaust gas channel of the engine. Preferred Features: The engine is operated with a lean burn fuel-air mixture. The time point for the opening of the valve occurs depending on the operational state of the engine or the actual working temperature of the exhaust gas purification device.