JPH0313454U

JPH0313454U -

Info

Publication number: JPH0313454U
Application number: JP7282089U
Authority: JP
Priority date: 1989-06-21
Filing date: 1989-06-21
Publication date: 1991-02-12

Description

[Brief explanation of the drawing]

第１〜７図は本考案の一実施例を示すもので、
第１図は本考案装置を備えたＶ型６気筒内燃機関
の要部縦断面図、第２図はそのシリンダブロツク
の平面図、第３図は第１図−線に沿う拡大部
分平面図、第４図は、第１図−線に沿う拡大
部分平面図、第５図は、第４図−線に沿う断
面図、第６図は、第５図−線に沿う断面図、
第７図は、第５図−線に沿う断面図である。Ｂｇ……容積拡大部、Ｃｃ……管長切換チヤン
バ、Ｃｌ，Ｃｒ……気筒群、２０……スロツトル
弁、３５_１〜３５_６……分配管、３８ｌ，３８ｒ
……管長切換弁、４６_１〜４６_６……ＥＧＲガス
供給ポート。 Figures 1 to 7 show an embodiment of the present invention.
FIG. 1 is a longitudinal cross-sectional view of a main part of a V-type six-cylinder internal combustion engine equipped with the device of the present invention, FIG. 2 is a plan view of its cylinder block, and FIG. 3 is an enlarged partial plan view taken along the line of FIG. 1. 4 is an enlarged partial plan view taken along the line of FIG. 1, FIG. 5 is a sectional view taken along the line of FIG. 4, and FIG. 6 is a sectional view taken along the line of FIG.
FIG. 7 is a sectional view taken along the line of FIG. 5. Bg... Volume expansion part, Cc... Pipe length switching chamber, Cl, Cr... Cylinder group, 20... Throttle valve, 35 ₁ to 35 ₆ ... Distribution pipe, 38l, 38r
... Pipe length switching valve, 46 ₁ to 46 ₆ ... EGR gas supply port.

Claims

[Claims for Utility Model Registration] A volume expansion part Bg whose upstream side communicates with the atmosphere via the throttle valve 20, and a plurality of distribution pipes whose upstream side is connected to the volume expansion part Bg and whose downstream side is connected to the cylinder groups Cl and Cr. 35 ₁ to 35 ₆ , and a pipe length switching valve 38l, which is controlled to open and close depending on the operating status of the engine.
In the EGR gas supply device for a multi-cylinder internal combustion engine, the EGR gas supply device includes a pipe length switching chamber Cc with which intermediate portions of the distribution pipes 35 ₁ to 35 ₆ communicate via a pipe length switching chamber Cc. From the switching chamber Cc to the distribution pipe 35
₁ to 35 to the cylinder groups Cl and Cr via ₆ .
An EGR gas supply device for a multi-cylinder internal combustion engine pipe characterized by supplying R gas. EGR gas supply ports 46 1 to 46 6 are formed on the walls of the distribution pipes 35 ₁ to 35 ₆ that constitute the boundary with the pipe length switching chamber Cc, and the EGR gas supply ports 46 ₁ to 46 ₆ are connected to the pipe length switching chamber via the EGR gas supply ports 46 ₁ to 46 ₆ . The EGR gas supply device for a multi-cylinder internal combustion engine according to claim 1, characterized in that EGR gas is supplied from Cc to each of the distribution pipes 35 ₁ to 35 ₆ . Each distribution pipe 35 ₁ -
_35. The EGR gas supply device for a multi-cylinder internal combustion engine according to claim 1, wherein EGR gas is supplied to the multi-cylinder internal combustion engine.