Engine control system for constrolling in-cylinder fuel injection engine

• Main Authors: NAKAYAMA YOKO, TOKUYASU NOBORU, SHIRAISHI TAKUYA, TAKAKU YUTAKA, NOGI TOSHIHARU, OHSUGA MINORU
• Format: Patent
• Language: English
• Published: 09.05.2002
• Edition: 7
• Subjects: ACTUATING-FLOATS; BLASTING; COCKS; COMBUSTION ENGINES; COMBUSTION ENGINES IN GENERAL; CONTROLLING COMBUSTION ENGINES; CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES; DEVICES FOR VENTING OR AERATING; ENGINE PLANTS IN GENERAL; ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; IGNITION, OTHER THAN COMPRESSION IGNITION, FORINTERNAL-COMBUSTION ENGINES; INTERNAL-COMBUSTION PISTON ENGINES; LIGHTING; MACHINES OR ENGINES IN GENERAL; MECHANICAL ENGINEERING; STEAM ENGINES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TAPS; TESTING OF IGNITION TIMING IN COMPRESSION-IGNITION ENGINES; THERMAL INSULATION IN GENERAL; VALVES; WEAPONS

In order to provide a system that lower NOx emission and an improved fuel consumption are obtained by making the igniting control possible in the wide operation range by performing the fuel injection and the ultra lean burning with the homogeneous air-fuel mixture, in the engine having the compression igniting mode, in the in-cylinder fuel injection engine having the compression igniting mode, means for performing the first fuel injection for the initial combustion speed control before igniting and the second fuel injection for the engine torque control after that, are provided. The second fuel injection ratio for the engine torque control is increased according to the engine torque. Furthermore, in order to improve the igniting, the igniting trigger means is provided in the in-cylinder fuel injection engine having a compression igniting mode and the igniting trigger is added by the igniting trigger means after the first fuel injection.