JPH0169132U

JPH0169132U -

Info

Publication number: JPH0169132U
Application number: JP1987165925U
Authority: JP
Priority date: 1987-10-28
Filing date: 1987-10-28
Publication date: 1989-05-08

Description

[Brief explanation of the drawing]

第１図は、本考案の実施例に係るエンジンの吸
気装置の吸気制御システム図、第２図は、同吸気
制御システムに於けるエンジン吸気ポート部の拡
大断面図、第３図は、上記第１図の吸気制御シス
テムに於けるエンジンコントロールユニツトのシ
ヤツター弁制御機能を等価的に示す制御ブロツク
図、第４図Ａ，Ｂは、従来のエンジンの吸気装置
の吸気ポート部の構造および作用を示す異なる動
作態様の断面図である。１……エンジン本体、２……吸気管、３……ス
ロツトルチヤンバー、５……サージタンク、６…
…スロツトル弁、７……ブースト圧検出手段、８
……フユーエルインジエクタ、９……吸気マニホ
ールド、１０……吸気ポート、１１……メインポ
ート、１２……スワールポート、１３……隔壁、
１４……シヤツター弁、１５……エンジン回転数
検出手段、１６……エンジン燃焼室、２０……エ
ンジンコントロールユニツト（ＥＣＵ）、２１…
…イグニツシヨンキースイツチ、２２……キーオ
フ状態検出手段、３１……運転領域判定手段、３
２……シヤツター弁制御手段。 FIG. 1 is a diagram of an intake control system of an engine intake device according to an embodiment of the present invention, FIG. 2 is an enlarged sectional view of an engine intake port in the intake control system, and FIG. A control block diagram equivalently showing the shutter valve control function of the engine control unit in the intake control system shown in FIG. FIG. 4 is a cross-sectional view of different operating modes. 1...Engine body, 2...Intake pipe, 3...Throttle chamber, 5...Surge tank, 6...
...Throttle valve, 7...Boost pressure detection means, 8
... Fuel injector, 9 ... Intake manifold, 10 ... Intake port, 11 ... Main port, 12 ... Swirl port, 13 ... Bulkhead,
14... Shutter valve, 15... Engine rotation speed detection means, 16... Engine combustion chamber, 20... Engine control unit (ECU), 21...
...Ignition key switch, 22...Key-off state detection means, 31...Operating region determination means, 3
2... Shutter valve control means.

Claims

[Scope of utility model registration request]

An intake port consisting of at least two ports, a main port and a swirl port, an on-off valve that adjusts the opening state of the intake port depending on the operating range of the engine, and an on-off valve provided on the downstream side of the on-off valve of the intake port. In the engine, the on-off valve is located at an upstream communication port of two ports, the main port and the swirl port, of the intake port, and is configured to connect only the main port. A first state in which it is closed and the swirl port is opened, a second state in which both the main port and the swirl port are opened, and a third state in which both the main port and the swirl port are closed are arbitrarily selected. An engine intake device characterized in that it is installed so as to allow the following.