| 摘要 |
PROBLEM TO BE SOLVED: To provide an internal combustion engine system with an exhaust gas recirculating device, capable of uniformly mixing the exhaust gas of an engine and fresh air on its intake side and enhancing an NOx reducing effect as a result. SOLUTION: This internal combustion engine system 1 with the exhaust gas recirculating device is structured by providing an exhaust gas extracting means 11 to extract the exhaust gas from an exhaust circuit 28 of the engine 2 and to make it join an intake circuit 23 and a mixing means 19 provided in the downstream of an exhaust gas joining position where the exhaust gas from the exhaust gas extracting means 11 is joined to mix fresh air and the exhaust gas, and the mixing means 19 is provided with a throttle part and a diffuser part. Therefore, the exhaust gas and air are uniformly mixed, a combustion temperature can be lowered, and the NOx reducing effect at the time of combustion can be enhanced as a result. |
