| 摘要 |
PURPOSE:To prevent ignition lag so as to attempt reduction of combustion noise by increasing the interval from pilot injection of fuel up to main injection in response to increase of exhaust recirculation amount. CONSTITUTION:An electronic controller 60 is supplied with detected values input, from a speed sensor 50, an acceleration sensor 51, and sensors of an intake temperature 52, a supercharging pressure 53, and a water temperature 54 and the like, for making pilot injection through a fuel control valve 21 and for making main injection after the specified time has passed when the amount of fuel corresponding to the driving condition is to be injected. Also, opening of an exhaust gas recirculation valve 44 is controlled through a pressure control valve 45 in order to recirculate the specified amount of exhaust in an intake system. The electronic controller 60 controls the fuel control valve 21 so as to increase the internal between pilot injection and main injection in proportion to the increase of exhaust gas recirculation amount calculated according to operation parameters.
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