| 摘要 |
PROBLEM TO BE SOLVED: To solve a problem that a pressure-feeding means such as a pump has been required for returning EGR gas to an intake side from an exhaust side, since intake pressure occasionally exceeds exhaust pressure in an engine mounted with a supercharger.SOLUTION: An EGR structure for an engine having a supercharger is provided, the EGR structure including an EGR gas inlet arranged on the turbine upstream side of the supercharger, a first outlet arranged in a first communicating area on the compressor side downstream side of the supercharger, a second outlet arranged in a second communicating area on the compressor side upstream side of the supercharger, an EGR branch gas pipe having a branch point of branching off to the first outlet and the second outlet from the EGR gas inlet, an EGR valve arranged between the EGR gas inlet and the branch point of the EGR branch gas pipe, a first check valve arranged between the first outlet and the branch point of the EGR branch gas pipe, and a second check valve arranged between the second outlet and the branch point of the EGR branch gas pipe. |
