JPS5773829A - Variable gain amplifier of electronic fuel injection device of engine - Google Patents

Variable gain amplifier of electronic fuel injection device of engine

Info

Publication number
JPS5773829A
JPS5773829A JP14878180A JP14878180A JPS5773829A JP S5773829 A JPS5773829 A JP S5773829A JP 14878180 A JP14878180 A JP 14878180A JP 14878180 A JP14878180 A JP 14878180A JP S5773829 A JPS5773829 A JP S5773829A
Authority
JP
Japan
Prior art keywords
signal
rotational speed
fuel injection
engine
output
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP14878180A
Other languages
Japanese (ja)
Inventor
Toru Usui
Kiyoharu Nakao
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Komatsu Ltd
Original Assignee
Komatsu Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Komatsu Ltd filed Critical Komatsu Ltd
Priority to JP14878180A priority Critical patent/JPS5773829A/en
Publication of JPS5773829A publication Critical patent/JPS5773829A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To obtain stability and quick responsiveness in the whole rotary range of an engine by changing a proportional gain of PID compensation circuit as a function of engine rotational speed in an electronic fuel injection device which regulates amount of fuel injection.
CONSTITUTION: As a result of comparison, by means of a comparator 22, between sawtooth wave output eT from a sawtooth wave generation circuit 21 and an engine rotational speed signal en aftter its going through an integration circuit 23 for smoothing, signal Pc is outputted during period where eT<en is satisified. The signal Pc and a rotational speed deviation value Δe are added to AND circuit 24, then amplitude of the signal Pc is made a value of a signal Δe, subsequently the output is supplied to an integration circuit 25 through a transistor Tr3, thus an output eo is obtained as a result of multiplicative operation for smoothing. The output eo is obtained through pulse width moduation of rotational speed signal en, and amplitude modulation by rotational speed deviation signal Δe, is a ratational speed control signal suitable for fuel injection peculiarity in this rotational speed.
COPYRIGHT: (C)1982,JPO&Japio
JP14878180A 1980-10-23 1980-10-23 Variable gain amplifier of electronic fuel injection device of engine Pending JPS5773829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14878180A JPS5773829A (en) 1980-10-23 1980-10-23 Variable gain amplifier of electronic fuel injection device of engine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14878180A JPS5773829A (en) 1980-10-23 1980-10-23 Variable gain amplifier of electronic fuel injection device of engine

Publications (1)

Publication Number Publication Date
JPS5773829A true JPS5773829A (en) 1982-05-08

Family

ID=15460524

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14878180A Pending JPS5773829A (en) 1980-10-23 1980-10-23 Variable gain amplifier of electronic fuel injection device of engine

Country Status (1)

Country Link
JP (1) JPS5773829A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02106466A (en) * 1988-10-17 1990-04-18 Jidosha Kiki Co Ltd Flow rate control valve for power steering device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02106466A (en) * 1988-10-17 1990-04-18 Jidosha Kiki Co Ltd Flow rate control valve for power steering device

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