| 摘要 |
PROBLEM TO BE SOLVED: To provide an EGR gas mixing device capable of securing a required recirculation amount of exhaust gas by differential pressure lower than conventional ones.SOLUTION: In an EGR gas mixing device, a Venturi part 3 is formed in the middle of an intake pipe 1, an annular chamber 4 is provided on an outer periphery of the Venturi part 3, the annular chamber 4 is connected to an EGR pipe 6 by extracting a part of exhaust gas 5 from an exhaust side, an annular slit 7 is formed in the Venturi part 3 to communicate the inside of the annular chamber 4 with the inside of the intake pipe 1, and the Venturi part 3 is divided into an upstream side diameter reduction part 8 and a downstream side diameter expansion part 9. When the annular chamber 4 is connected to EGR pipe 6, an axial center 6a of the EGR pipe 6 is disposed offset to the diameter reduction part 8 side from an intermediate position P of the annular slit 7. |
