JPS616631U

JPS616631U - Diesel engine exhaust recirculation control device

Info

Publication number: JPS616631U
Application number: JP9188184U
Authority: JP
Inventors: 義隆野元; 茂桜井; 博文山内
Original assignee: マツダ株式会社
Priority date: 1984-06-20
Filing date: 1984-06-20
Publication date: 1986-01-16

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

図面は本考案の実施態様を例示し、第１図はエンジンの
全体構成図、第２図はエンジンの一気筒での縦断面図、
第３図はタイミングバルブと吸気−弁の開弁期間を示す
グラフ図である。１・・・エンジン本体、・・・吸気通路、−３・・・排
気通路、５・・・第１タイミンゲバルブ、６・・・エア
供給通路ミ７・・・排気還流通鱗、８・・・開閉制御手
段、１３・・・シリンダヘッド、１４・・・吸気弁、１
５・・・吸気反ワールポート、２２・・・移行手段、５
３−・・負荷検出手段、５４・・・回転数検出手段、５
５・・・制御手段。The drawings illustrate embodiments of the present invention; FIG. 1 is an overall configuration diagram of the engine, FIG. 2 is a longitudinal sectional view of one cylinder of the engine,
FIG. 3 is a graph showing the opening period of the timing valve and the intake valve. DESCRIPTION OF SYMBOLS 1...Engine body,...Intake passage, -3...Exhaust passage, 5...First timing valve, 6...Air supply passage 7...Exhaust recirculation flow scale, 8. ... Opening/closing control means, 13... Cylinder head, 14... Intake valve, 1
5... Intake anti-whirl port, 22... Transition means, 5
3-... Load detection means, 54... Rotation speed detection means, 5
5... Control means.

Claims

[Scope of utility model registration request]

An intake swirl port is formed in the cylinder head, and a timing valve for opening and closing the intake passage is disposed in the intake passage upstream of the intake swirl port.
An air supply passage and an exhaust recirculation passage communicate with the intake swirl port, and a transition means for shifting the opening period of the timing valve, a load detection means for detecting the engine load, and a rotation speed detection means for detecting the engine rotation speed. In response to outputs from the load detecting means and the rotational speed detecting means, the transition means is actuated to close the timing valve as early as possible in the engine's high load operating range, while closing the exhaust gas recirculation passage in the engine's low speed range. Close the air supply passage and open the air supply passage.
An exhaust gas recirculation control device for a diesel engine, comprising: control means for generating a swirl by supplying air from the air supply passage.