JPS6176119U

JPS6176119U -

Info

Publication number: JPS6176119U
Application number: JP16143684U
Authority: JP
Priority date: 1984-10-24
Filing date: 1984-10-24
Publication date: 1986-05-22

Description

[Brief explanation of drawings]

第１図は本考案の第１実施例に係る吸気装置を
備えたエンジンの吸気系の要部平面図、第２図は
第１図の−縦断面図、第３図は本考案の第２
実施例に係る吸気装置の要部縦断面図、第４図は
従来のエンジンの吸気装置の構造図である。１…エンジン、２…シリンダブロツク、３…シ
リンダヘツド、４…ピストン、５…シリンダ、６
…吸気弁、７…吸気ポート、９…インジエクタ、
１０…サージタンクユニツト、１１…サージタン
ク、１２…独立吸気通路、１３…主吸気通路、１
７，１８…連通口、１９，２４…開閉弁、２０…
弁軸、２３…アクチユエータ。 FIG. 1 is a plan view of a main part of an intake system of an engine equipped with an intake system according to a first embodiment of the present invention, FIG. 2 is a vertical cross-sectional view of FIG.
FIG. 4 is a vertical sectional view of a main part of an intake system according to an embodiment, and is a structural diagram of a conventional engine intake system. 1...Engine, 2...Cylinder block, 3...Cylinder head, 4...Piston, 5...Cylinder, 6
...Intake valve, 7...Intake port, 9...Injector,
10...Surge tank unit, 11...Surge tank, 12...Independent intake passage, 13...Main intake passage, 1
7, 18...Communication port, 19, 24...Opening/closing valve, 20...
Valve stem, 23... actuator.

Claims

[Scope of utility model registration request]

An engine intake system in which a surge tank provided in the middle of an intake system is connected to an intake port of each cylinder of the engine through separate independent intake passages, wherein a portion of each independent intake passage is connected to the surge tank provided in the middle of the intake system, and the intake port of each cylinder of the engine is The independent intake passage and the internal space of the surge tank are formed so as to be wrapped around the outer periphery of the tank, and the independent intake passage and the internal space of the surge tank are formed at positions facing each of the independent intake passages on the outer peripheral wall of the surge tank and in the circumferential direction thereof. They are made to be able to communicate with each other through a plurality of communication ports formed for each independent intake passage at appropriate distances from each other, and
Of the plurality of communication ports formed facing each of the independent intake passages, each communication port on a side closer to the intake port is provided with an on-off valve that opens and closes the communication port depending on the operating state of the engine. An engine intake device characterized by being provided with.