JPS5879035U

JPS5879035U - Maximum injection amount characteristic signal generation circuit for electronic fuel injection pump

Info

Publication number: JPS5879035U
Application number: JP17473281U
Authority: JP
Inventors: 岩崎　裕治; 藤森　恭一; 桧山　泰宏
Original assignee: 株式会社ボッシュオートモーティブ　システム
Priority date: 1981-11-26
Filing date: 1981-11-26
Publication date: 1983-05-28

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−は本考案によ衣最大噴射量特性信号発生回
路を備えた電子式ガバナの構成例を示すブロック図、第
２図は第１図に示したフルＱ信号発生回路の一実施例を
示すブロック図、第３図は第２図に示すフルＱ信号発生
回路により得られるフルＱ特性の一例を示す特性曲線図
、第４図は第１図に示したフルＱ信号発生回路の他の実
施例を示すブロック図である。１・・・ディーゼル機関、２・・・燃料噴射ポンプ、３
・＝・アクチュエータ、８．　８’・・・フルＱ信号発
生回路、９・・・制御回路、１１，１４．１４’・・・
ＲＯＭ。１２．１７・・−Ｄ／Ａコンバータ、１３．１３’・・
・演算回路、１５・・・スイッチ回路、１５ａ乃至１５
ｄ・・・スイッチ素子、Ｄａ・・・アドレスデータ、Ｄ
ｂ・・・基本データ、Ｄ、、　Ｄ、・・・補正データ、
Ｄ。・・・出力データ、Ｄ、・・・速度データ、ｖｌ・
・・制御電圧信号、Ｖ２・・・フルＱ電圧信号。, No. 1- is a block diagram showing an example of the configuration of an electronic governor equipped with a maximum injection amount characteristic signal generation circuit according to the present invention, and FIG. 2 is an example of the full-Q signal generation circuit shown in FIG. 1. FIG. 3 is a characteristic curve diagram showing an example of the full-Q characteristic obtained by the full-Q signal generation circuit shown in FIG. 2, and FIG. 4 is a block diagram showing an example of the full-Q signal generation circuit shown in FIG. It is a block diagram showing an example of. 1...Diesel engine, 2...Fuel injection pump, 3
・=・Actuator, 8. 8'... Full Q signal generation circuit, 9... Control circuit, 11, 14.14'...
ROM. 12.17...-D/A converter, 13.13'...
- Arithmetic circuit, 15... Switch circuit, 15a to 15
d...Switch element, Da...Address data, D
b...Basic data, D...D,...Correction data,
D. ...output data, D, ...speed data, vl.
...Control voltage signal, V2...Full Q voltage signal.

Claims

[Claims for Utility Model Registration] 1. A maximum injection amount characteristic signal generation circuit for an electronic fuel injection pump for an internal combustion engine, comprising: a first memory storing basic full-Q characteristic data corresponding to the rotational speed of the internal combustion engine; ,
A second memory storing correction data for changing at least a portion of the basic full-Q characteristic data also includes read address information for selectively reading desired correction data stored in the second memory. An electronic fuel injection pump characterized in that the electronic fuel injection pump is provided with a switch means for outputting: and a calculation means for performing a correction calculation of the basic full Q characteristic data based on the correction data read from the second memory. Injection amount characteristic signal generation circuit. 2. The correction data is data indicating the amount of parallel movement of the basic full-Q characteristic data, and the calculating means calculates full-Q characteristic data as a result of translating the basic full-Q characteristic data by an amount according to the correction data. A maximum injection amount characteristic signal generating circuit for an electronic fuel injection pump according to claim 1, characterized in that: '3 Patent characterized in that the correction data is a function of the rotational speed, and a set of correction data selected by the switch means is read from the second memory in accordance with speed data related to the rotational speed. A maximum injection amount characteristic signal generation circuit for an electronic fuel injection pump according to claim 1.