JPS5939748U

JPS5939748U - Internal combustion engine exhaust recirculation device

Info

Publication number: JPS5939748U
Application number: JP13646382U
Authority: JP
Inventors: 須合　雄孝
Original assignee: 日産自動車株式会社
Priority date: 1982-09-08
Filing date: 1982-09-08
Publication date: 1984-03-14

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 drawings]

第１図は従来のＥＧＲ（排気還流）装置の概略構成図、
第２図はその制御系のブロック図である。第３図は手動変速機または自動変速機を備えた内燃機関
において、その回転速度と要求負荷Ｔｐとの２次元テー
ブル上で加速域と定常域とが判別されることを示す説明
図である。第４図はＣＶＴ機関の運転特性をその回転速
度と発生軸トルクとの関係で示す説明図である。第５図
は本考案の一実施例の概略構成図、第６図はその制御系
のブロック図である。第７図はＣＶＴ機関において、車
速　　　□と要求負荷Ｔｐとの２次元テーブル上で加速
域と定常域とが判別されることを示す説明図である。１・・・内燃機関、２・・・排気通路、３・・・吸気通
路、５・・・ＥＧＲ通路（排気還流通路）、６・・・Ｅ
ＧＲ制御弁（排気還流制御弁）、９・・・定圧弁、ＩＯ
Ａ・・・制御回路、１１・・・ソレノイド弁、１２・・
・クランク角センサ、１３・・・エアフローメータ、１
４Ａ・・・メモリテーブル、２０・・・無断変速機（Ｃ
ＶＴ）、２２・・・車速センサ、２３・・・絞り弁開度
センサ。Figure 1 is a schematic diagram of a conventional EGR (exhaust gas recirculation) device.
FIG. 2 is a block diagram of the control system. FIG. 3 is an explanatory diagram showing that in an internal combustion engine equipped with a manual transmission or an automatic transmission, an acceleration region and a steady region are determined on a two-dimensional table of the rotational speed and the required load Tp. FIG. 4 is an explanatory diagram showing the operating characteristics of a CVT engine in terms of the relationship between its rotational speed and generated shaft torque. FIG. 5 is a schematic configuration diagram of an embodiment of the present invention, and FIG. 6 is a block diagram of its control system. FIG. 7 is an explanatory diagram showing that in a CVT engine, an acceleration region and a steady region are determined on a two-dimensional table of vehicle speed □ and required load Tp. 1... Internal combustion engine, 2... Exhaust passage, 3... Intake passage, 5... EGR passage (exhaust gas recirculation passage), 6... E
GR control valve (exhaust recirculation control valve), 9...constant pressure valve, IO
A... Control circuit, 11... Solenoid valve, 12...
・Crank angle sensor, 13...Air flow meter, 1
4A...Memory table, 20...Uncontrolled transmission (C
VT), 22... Vehicle speed sensor, 23... Throttle valve opening sensor.

Claims

[Scope of utility model registration request]

A solenoid valve that supplies controlled negative pressure by diluting constant negative pressure with the atmosphere based on periodic opening and closing operations, and an exhaust recirculation control valve that opens and closes the engine exhaust recirculation passage in response to the controlled negative pressure from this solenoid valve. and means for detecting the requested load of the engine.
It comprises means for detecting the running speed of the vehicle, and a control circuit for outputting a drive pulse signal to the solenoid valve in cooperation with the load detecting means and the vehicle speed detecting means, and the control circuit' is configured to detect the required load. An internal combustion engine characterized by having a circuit configuration that includes a memory table that assigns an appropriate value to the pulse signal according to a detected value and a detected value of vehicle speed, and outputs the pulse signal based on reading of the memory table. Exhaust recirculation device.