| 摘要 |
PROBLEM TO BE SOLVED: To provide a multicylinder engine in which NOx reduction function is improved and a damage to an EGR valve is suppressed. SOLUTION: In this multicylinder engine, 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. The EGR valve case outlet part 16a of the EGR valve case 16 is fitted to a mounting seat inlet part 54a on the side outer face of the EGR valve case mounting seat 65 where the side of the EGR valve case mounting seat 65 apart from a cylinder head 10 among its both sides is designated as the side outer side. The inlet part is communicated with the outlet part so that, when viewed in the direction parallel with the center axis 64 of the cylinder, the EGR valve case 16 is projected to the lateral outer side more than the intake distribution passage wall 5. COPYRIGHT: (C)2007,JPO&INPIT
|
