| 摘要 |
PROBLEM TO BE SOLVED: To provide a method for operating a diesel engine reducing emission of soot, NOx, HC and CO in a light load operation. SOLUTION: This invention relates to a method for operating the diesel engine including an exhaust gas recirculation passage 2 recirculating part of exhaust gas discharged from a combustion chamber 105 to intake gas to the combustion chamber, and a supercharger 3 supercharging intake gas. Exhaust gas recirculation ratio is set to 60 to 80%, excess air ratio is set to 1.5 to 3, fuel injection start timing is set to crank angle -30 to -10°ATDC, injection pressure of fuel is set to 100 to 300 MPa at a time of light load. COPYRIGHT: (C)2007,JPO&INPIT
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