Method for operating an Otto engine with direct fuel injection comprises passing and leaving residual gas in the combustion chamber using an internal and external exhaust gas re-circulating unit

摘要

Method for operating an Otto engine with direct fuel injection comprises passing and leaving residual gas in the combustion chamber using an internal and external exhaust gas re-circulating unit. An independent claim is also included for a control device for an Otto engine. Preferred Features: The temperature of the gas mixture is controlled by the portions of residual gas from the external exhaust gas re-circulating unit and by residual gas from an internal exhaust gas re-circulating unit to the whole exhaust gas re-circulating unit.