| 摘要 |
PROBLEM TO BE SOLVED: To optimize exhaust gas recirculation with an EGR device depending on fuel to be used for combustion in a fuel supply system capable of supplying both gas fuel and liquid fuel.SOLUTION: An internal combustion engine comprises: a first injection valve 21 which injects gas fuel; a second injection valve 22 which injects liquid fuel; and an EGR device which recirculates a portion of exhaust gas, exhausted from a cylinder 24 of an engine 10 to an exhaust passage, to the cylinder 24. A control section 80 executes recirculation of the exhaust gas with the EGR device on the basis of an operation state of the engine. When the engine is in the operation state using the gas fuel, the control device limits execution of the recirculation of the exhaust gas with the EGR device compared to the operation state using the liquid fuel. |
