Brennkraftmaschine

摘要

An engine comprising an exhaust gas after-treatment device arranged in an exhaust passage of the engine, which raises the temperature of the exhaust gas after-treatment device by making selective use of a first injection pattern injecting only main fuel and delaying the injection timing of the main fuel QR, a second injection pattern injecting auxiliary fuel Qv near top dead center of the suction stroke and delaying the injection timing of the main fuel QR, and a third injection pattern injecting auxiliary fuel Qv and QP before injection of the main fuel and after injection and delaying the injection timing of the main fuel QR.