JPS63177653U

JPS63177653U -

Info

Publication number: JPS63177653U
Application number: JP6835287U
Authority: JP
Priority date: 1987-05-07
Filing date: 1987-05-07
Publication date: 1988-11-17

Description

[Brief explanation of the drawing]

第１図は吸気マニホルドの平面図、第２図は同
・側面図、第３図乃至第５図は夫々第１図の―
線、―線、―線断面図、第６図は各吸
気通路への排気の流れを示す概略図である。尚図面中、１はエンジン、５は吸気マニホルド
、１５_１，１５_２，１５_３，１５_４は吸気通路、
３１は第１排気還流路、３３は第２排気還流路、
３５は第１分配路、３７は第２分配路、３９_１，
３９_２，３９_３，３９_４は連通路である。 Figure 1 is a plan view of the intake manifold, Figure 2 is a side view of the intake manifold, and Figures 3 to 5 are the same as in Figure 1.
6 is a schematic diagram showing the flow of exhaust gas to each intake passage. In the drawing, 1 is the engine, 5 is the intake manifold, 15 ₁ , 15 ₂ , 15 ₃ , 15 ₄ is the intake passage,
31 is a first exhaust gas recirculation path, 33 is a second exhaust gas recirculation path,
35 is the first distribution path, 37 is the second distribution path, 39 ₁ ,
39 ₂ , 39 ₃ , 39 ₄ are communicating passages.

Claims

[Claims for Utility Model Registration] Four cylinders C arranged in parallel in the order of first, second, third, and fourth, and in which the combustion process is performed in the order of first, third, fourth, and second. ₁ , C ₂ , C ₃ , C ₄ , and the first, second, third, and fourth cylinders C ₁ , C ₂ ,
The first connected to C ₃ and C ₄ and arranged in parallel.
, second, third, and fourth intake passages 15 ₁ , 1
5 ₂ , 15 ₃ , and 15 ₄ extend in a direction intersecting the extending direction of the intake passage 15, with the upstream side located on the fourth intake passage 15 ₄ side and the downstream side located on the first intake passage 15 ₁ side. a first exhaust gas recirculation path 31 that extends along the first exhaust gas recirculation path 31;
an exhaust gas recirculation path 33; the first exhaust gas recirculation path 31 and the second exhaust gas recirculation path 33;
a distribution path communicating between the second exhaust gas recirculation path 33 and the first, second, third, and
The first, second, third, and fourth communication passages 3 communicate between the fourth intake passages 15 ₁ , 15 ₂ , 15 ₃ , and 15 _4, respectively.
9 ₁ , 39 ₂ , 39 ₃ , 39 ₄ , and in the exhaust gas recirculation device, the distribution passage is a first distribution passage 35 provided between the first communication passage 39 ₁ and the second communication passage 39 ₂ . and a second distribution passage 37 provided between the third communication passage ₃₉₃ and the fourth communication passage ₃₉₄ , and the first distribution passage 3
5 is formed to be larger than the cross-sectional area of the second distribution path 37, and the cross-sectional area of the first communication path ₃₉₁ is formed to be larger than the cross-sectional area of the fourth communication path 3.
9 is formed larger than the cross-sectional area of ₄ , and the third
An exhaust gas recirculation device characterized in that the cross-sectional area of the communicating passage ₃₉₃ is larger than the cross-sectional area of the second communicating passage ₃₉₂ .