| 摘要 |
PROBLEM TO BE SOLVED: To provide a gas engine with an EGR system reducing pumping loss of the engine accompanying restriction by a throttle valve at a time of light load operation and low temperature intake air operation of the engine and preventing drop of heat efficiency due to the pumping loss, and improving heat efficiency in such operation as a result. SOLUTION: In the gas engine constructed to mix fuel gas and air by a mixer and supply the same to the engine through an intake air passage opened and closed by a throttle valve, and supplying EGR gas branched out of exhaust gas in an exhaust gas passage to the engine through an EGR passage opened and closed by an EGR valve, opening of the throttle valve is set to excess opening larger than standard opening regulated by operation characteristics of the engine and EGR gas is supplied to the engine together with air fuel mixture by opening the EGR valve during a period of the excess opening. COPYRIGHT: (C)2006,JPO&NCIPI
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