JPH0250061U

JPH0250061U -

Info

Publication number: JPH0250061U
Application number: JP12666788U
Authority: JP
Priority date: 1988-09-27
Filing date: 1988-09-27
Publication date: 1990-04-06

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例を示す、６気筒横置
きＶ型エンジンの吸気装置の平面説明図である。
第２図は、第１図に示す吸気装置を備えたエンジ
ンの立面説明図である。第３図は、第１図に示す
吸気装置の集合部より下流の部分を示す立面説明
図である。第４図は、第３図のＸ―Ｘ線断面説明
図である。第５図は、ＥＧＲ供給通路のフロント
側、リヤ側高速吸気通路への開口部の縦断面を示
す図である。第６図は、第１図に示す吸気装置の
Ａ―Ａ線断面説明図である。第７図は、第１図に
示す吸気装置のＢ―Ｂ線断面説明図である。第８
図は、第１図に示す吸気装置のＣ―Ｃ線断面説明
図である。第９図は、第１図に示す吸気装置のＤ
―Ｄ線断面説明図である。第１０図は、第１図に
示す吸気装置の平行部における、フロント側、リ
ヤ側高速用吸気通路と、フロント側、リヤ側低速
用吸気通路と、独立吸気通路の位置関係を示す図
である。第１１図は、蓋部材を取り外した状態で
、連通路を下流側からみた立面説明図である。ＣＥ…６気筒横置きＶ型エンジン、Ｆ…フロン
ト側バンク、Ｒ…リヤ側バンク、ＩＭ…吸気マニ
ホールド、Ｍ…マニホールド本体部、Ｎ…独立吸
気通路部、ＢＮ…ボンネツト、＃１〜＃６…第１
〜第６気筒、１…吸気弁、２…吸気ポート、３…
独立吸気通路、１１…共通吸気通路、１１ｆ，１
１ｒ…フロント側、リヤ側分岐吸気通路、１２…
分岐部、１４…スロツトルボデイ、１７…集合部
、１８…フランジ部、１９…ＥＧＲ供給通路、２
１…フロント側高速用吸気通路、２２…リヤ側高
速用吸気通路、２３…共通低速用吸気通路、２５
…フロント側低速用吸気通路、２６…リヤ側低速
用吸気通路、３１…フロント側高速用吸気通路開
閉弁、３２…リヤ側高速用吸気通路開閉弁、３３
…連通路、３７…連通路開閉弁。 FIG. 1 is an explanatory plan view of an intake system for a six-cylinder horizontal V-type engine, showing an embodiment of the present invention.
FIG. 2 is an explanatory elevational view of an engine equipped with the intake device shown in FIG. 1. FIG. 3 is an explanatory elevational view showing a portion of the intake device shown in FIG. 1 downstream from the collecting section. FIG. 4 is an explanatory cross-sectional view taken along the line XX in FIG. 3. FIG. 5 is a diagram showing a longitudinal section of the opening of the EGR supply passage to the front side and rear side high speed intake passage. FIG. 6 is an explanatory cross-sectional view taken along line AA of the intake device shown in FIG. 1. FIG. 7 is an explanatory cross-sectional view taken along line BB of the intake device shown in FIG. 1. 8th
The figure is an explanatory cross-sectional view taken along the line CC of the intake device shown in FIG. 1. FIG. 9 shows the D of the intake system shown in FIG.
-D-line cross-sectional explanatory diagram. FIG. 10 is a diagram showing the positional relationship among the front and rear high-speed intake passages, the front and rear low-speed intake passages, and the independent intake passages in the parallel portion of the intake system shown in FIG. . FIG. 11 is an explanatory elevational view of the communication passage viewed from the downstream side with the lid member removed. CE...6-cylinder horizontal V-type engine, F...front bank, R...rear bank, IM...intake manifold, M...manifold body, N...independent intake passage, BN...bonnet, #1 to #6... 1st
~6th cylinder, 1...Intake valve, 2...Intake port, 3...
Independent intake passage, 11...Common intake passage, 11f, 1
1r...Front side, rear side branch intake passage, 12...
Branch part, 14... Throttle body, 17... Gathering part, 18... Flange part, 19... EGR supply passage, 2
1...Front side high speed intake passage, 22...Rear side high speed intake passage, 23...Common low speed intake passage, 25
...Front side low speed intake passage, 26...Rear side low speed intake passage, 31...Front side high speed intake passage opening/closing valve, 32...Rear side high speed intake passage opening/closing valve, 33
...Communication passage, 37...Communication passage opening/closing valve.

Claims

[Scope of utility model registration request]

Regarding the propagation of pressure waves, there is a high-speed intake passage in which the effective intake path length is set relatively short and an on-off valve is provided near the upstream end, and a downstream end is downstream of the high-speed intake passage. A low-speed intake passage is connected near the end and has a substantial intake path length longer than the high-speed intake passage, while an EG is provided in the high-speed intake passage downstream of the on-off valve.
An EGR supply device for a multi-cylinder engine, characterized in that a downstream end of an R supply passage is opened.