JPS60128949U

JPS60128949U - Internal combustion engine fuel supply system

Info

Publication number: JPS60128949U
Application number: JP1533284U
Authority: JP
Inventors: 森田　達郎
Original assignee: 日産自動車株式会社
Priority date: 1984-02-08
Filing date: 1984-02-08
Publication date: 1985-08-29

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図は従来の電子制御式燃料供給装置の燃料系統の構
成図、第２図は同上装置の空気系統およ−び電子制御系
統の構成図、第３図はバッテリ電圧ＶＢとバッテリ電圧
補正細工Ｓとの関係を示す特性　。図、第４図は水温と水温増量補正値Ｆｔとの関係を示す
特性図、第５図は水温と始動後増量補正の初期値ＫＡｓ
ｏとの関係を示す特″即図、第６図は水温とアイドル後
増量補正の初期値ＫＡｉｏとの関係を示す特性図、第７
図は水温と補正値ＴＮＴとの関係を示す特性、図、第８
因り機関回転数Ｎと補正値ＫＮｓＴとの関係を示す特性
図、第９図は始動径径１、適時間と補正値Ｋ　丁ＳＴと
の関係を示す特性図、第１０図は本考案の一実施例を示
す燃料系統および電子制御系統の構成図、第１１図は本
考案の一実施例で使用される制御回路のブロック図、第
１２図は燃料供給圧力ＰＦと単位時間当たりの燃料量Δ
ＱＰとの関係を示す特性図である。９・・・・・・吸気管、１０・・・・・・インジェクタ
、３２・・・・・・燃料圧力センサ、３３・・・・・・
制御回路。 °■− １゜にＴＳＴ８０　　２．４軸動候ノ暖遇崎刑（Ｓ）Figure 1 is a configuration diagram of the fuel system of a conventional electronically controlled fuel supply system, Figure 2 is a configuration diagram of the air system and electronic control system of the same device, and Figure 3 is a diagram of battery voltage VB and battery voltage correction. Characteristics that indicate the relationship with workmanship S. Figure 4 is a characteristic diagram showing the relationship between water temperature and water temperature increase correction value Ft, and Figure 5 is a characteristic diagram showing the relationship between water temperature and water temperature increase correction value Ft.
Figure 6 is a characteristic diagram showing the relationship between water temperature and the initial value KAio of the post-idle fuel increase correction, and Figure 7 is a characteristic diagram showing the relationship between
The figure shows characteristics showing the relationship between water temperature and correction value TNT.
Figure 9 is a characteristic diagram showing the relationship between engine speed N and correction value KNsT, Figure 9 is a characteristic diagram showing the relationship between starting diameter 1, appropriate time and correction value KST. A configuration diagram of a fuel system and an electronic control system showing an embodiment, FIG. 11 is a block diagram of a control circuit used in an embodiment of the present invention, and FIG. 12 shows fuel supply pressure PF and fuel amount Δ per unit time.
FIG. 3 is a characteristic diagram showing the relationship with QP. 9...Intake pipe, 10...Injector, 32...Fuel pressure sensor, 33...
control circuit. °■- TST at 1° 80 2.4 Shaft movement penalty (S)

Claims

[Scope of utility model registration request]

In a fuel supply system for an internal combustion engine having a fuel injection valve in an intake passage, the fuel supply pressure detection means detects the fuel supply pressure as a differential pressure between the fuel inlet and outlet of the fuel injection valve, and the fuel co-feed pressure detection means is used. and adjusting the detected fuel supply pressure to a curve value required to achieve the fuel supply amount set according to the engine operating state when the opening time of the fuel injection valve is constant. What is claimed is: 1. A fuel supply system for a domestic engine, characterized in that a fuel injection valve operation control means is provided for controlling the valve opening time of the fuel injection valve to be constant during steady operation. ,