| 摘要 |
PROBLEM TO BE SOLVED: To provide a multicylinder engine in which NOx reduction function is improved. SOLUTION: An intake inlet tube 28 is fitted to the upper part of an intake distribution passage wall 5, and an EGR valve case mounting seat 65 is formed at the peripheral wall rear part or peripheral wall front part of the intake inlet tube 28. An EGR gas guide passage 65b extending into the intake inlet tube 28 is formed in the EGR valve case mounting seat 65. An EGR valve case outlet part 16a of the EGR valve case 16 is fitted to a mounting seat inlet part 65a of the EGR valve case mounting seat 65 and they are communicated with each other. The EGR gas guide face 65c of the EGR gas guide passage 65b is positioned in the tangential direction of the inner peripheral surface 28b of the cylindrical intake inlet tube 28. COPYRIGHT: (C)2007,JPO&INPIT
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