System and method for purging residual gas from an ignition chamber of a gasoline engine combustion process of an externally ignited internal combustion engine

摘要

The invention relates to a method for removing residual gas from an ignition chamber (20) of an externally ignited internal combustion engine (100), the at least one combustion chamber (10) and an ignition chamber (20) assigned to the combustion chamber (10) and provided with an ignition device (21) for Igniting an ignition chamber charge of a residual gas-free ignitable fluid (F) present in the ignition chamber (20) at an ignition time, the residual gas of an ignition chamber charge ignited in the ignition chamber (20) with a scavenging charge of a fluid (F) from the ignition chamber (20) before the ignition time Provision is made for the scavenging charge to be held in a residual gas scavenging system (30, 31, 32) assigned to the internal combustion engine (100) and to be compressed to a prescribable pressure (pv), which occurs in an intake cycle (1) or an exhaust cycle (4.) of the internal combustion engine (100) is greater than the pressure (p12, p13) that is applied in the combustion chamber (10) connected on the pressure side to the ignition chamber (20) so that a residual gas purging in the intake stroke (1.) or in the exhaust stroke (4.) by a pressure gradient (Δpv_max / p12; Δpv_max / p13) is carried out between the residual gas purging system and the combustion chamber (10), so that the scavenging charge due to the pressure gradient (Δpv_max / p12; Δpv_max / p13) at a predeterminable point in time within the intake cycle (1.) or within the exhaust cycle (4. ) flows through the ignition chamber (20) into the combustion chamber (10).