JPS60112649U

JPS60112649U - Internal combustion engine fuel supply system

Info

Publication number: JPS60112649U
Application number: JP49984U
Authority: JP
Inventors: 森田　達郎
Original assignee: 日産自動車株式会社
Priority date: 1984-01-09
Filing date: 1984-01-09
Publication date: 1985-07-30

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]

第１図は従来の内燃機関の燃料供給装置の構成図、第２
図は同上装置の空気系統の構成図、第３図はバッテリ電
圧とバッテリ電圧補正値の関係を示す特性図、第４図は
水温と水温増量補正値の関係を示す特性図、第５図は水
温と始動後増量補正の初期値の関係を示す特性図、第６
図は水温とア−イドル後増量補正の初期値の関係を示す
特性図、第７図は水温と補正値ＴＳＴの関係を示す特性
図、第８図は機関回転数と補正値ＫＮＳＴとの関係を示
す特性図、第９図は始動後経過時間と補正値ＫＴＳＴの
関係を示す特性図、第１０図は本考案の第１め実施例を
示す構成図、第１１図は同上実施例の要部構成図、第１
２図は燃料供給圧力と燃料流量およびに定数との関係を
示す図、第１３図は本考案の第２の実施例を示す要部構
成図である。６・・・機関、１０・・・電磁式フューエルインジェク
タ、１５・・・エアフローメータ、１８・・・スロット
ルスイッチ、２２・・・回転数センサ、３１・・・燃料
配管、３２・・・圧力センサ、３３・・・コントロール
ユニット、３３Ａ・・・基本噴射パルス巾演算回路、３
３Ｂ・・・補正回路、３３Ｃ・・・インジェクタ駆動回
路、３３Ｄ・・・Ｋ定数演算回路、３３Ｅ・・・補正係
数演算回路。Figure 1 is a configuration diagram of a conventional fuel supply system for an internal combustion engine;
The figure is a configuration diagram of the air system of the same device, Figure 3 is a characteristic diagram showing the relationship between battery voltage and battery voltage correction value, Figure 4 is a characteristic diagram showing the relationship between water temperature and water temperature increase correction value, and Figure 5 is a characteristic diagram showing the relationship between water temperature and water temperature increase correction value. Characteristic diagram showing the relationship between water temperature and the initial value of the increase correction after startup, No. 6
The figure is a characteristic diagram showing the relationship between water temperature and the initial value of the post-idle increase correction, Figure 7 is a characteristic diagram showing the relationship between water temperature and correction value TST, and Figure 8 is the relationship between engine speed and correction value KNST. FIG. 9 is a characteristic diagram showing the relationship between the elapsed time after startup and the correction value KTST, FIG. 10 is a configuration diagram showing the first embodiment of the present invention, and FIG. 11 is a summary of the same embodiment. Part configuration diagram, 1st
FIG. 2 is a diagram showing the relationship between fuel supply pressure, fuel flow rate, and constant, and FIG. 13 is a diagram showing the main part configuration of a second embodiment of the present invention. 6... Engine, 10... Electromagnetic fuel injector, 15... Air flow meter, 18... Throttle switch, 22... Rotation speed sensor, 31... Fuel pipe, 32... Pressure sensor , 33... Control unit, 33A... Basic injection pulse width calculation circuit, 3
3B... Correction circuit, 33C... Injector drive circuit, 33D... K constant calculation circuit, 33E... Correction coefficient calculation circuit.

Claims

[Scope of utility model registration request]

In a fuel supply system for an internal combustion engine that is equipped with an electromagnetic fuel injector and controls the amount of fuel supplied by controlling the valve opening time of the injector, the difference between the fuel supply pressure of the injector and the pressure in the intake manifold 1. A fuel supply system for an internal combustion engine, comprising means for detecting a pressure, and a control means for correcting a valve opening time of an injector according to the pressure detected by the detecting means.