VORRICHTUNG UND VERFAHREN ZUR MOTORKONTROLLE

摘要

An engine has a fuel injection valve (40) for directly injecting fuel into a combustion chamber (16). A fuel supply device includes a feed pump (46) and a booster pump (47). The booster pump (47) pressurizes fuel fed from the feed pump (46) under a predetermined pressure and supplies that fuel to the fuel injection valve (40). When an abnormality occurs in the booster pump (47), driving of the booster pump (47) is stopped such that the fuel injection valve (40) performs fuel injection with fuel fed from feed pump (46). When driving of the booster pump (47) is stopped, driving of the fuel injection valve (40) or the amount of air drawn into the combustion chamber (16) is restricted such that only a mixture that does not cause misfire is formed in the combustion chamber (16). Therefore, a mixture that causes misfire is not formed in the combustion chamber (16), and the mixture in the combustion chamber (16) is ignited and no unburned mixture is discharged from the combustion chamber (16).