US4128082A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic fuel injection control device
Assignee: Toyota Motor Corp
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Filing: 1977-09-21
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Granted: 1978-12-05
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Expires: 1997-09-21
Abstract
Abstract Disclosed is an electronic fuel injection control device for an internal combustion engine comprising an electronic circuit requiring a power-supply source of fixed voltage. The control device comprises a C-MOS type generating means for generating an electric control signal having a predetermined pulse width, and a switching means. The switching means feeds injection valves of the engine with the control signal provided from the generating means, when the engine is being started.
Inventors
- 👤 Keiji Aoki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 13:49
CPC Classifications
F; F02; F02P; F02P5/00; F02P5/04; F02P5/145; F02P5/155; F02P5/1558; F02P15/00; F02P15/12; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
137 words
An electronic fuel injection control device of an internal combustion engine having fuel injection valves disposed upstream of intake valves of said engine and driving means of said injection valves, comprising: a means for detecting a condition of said engine and for generating an electrical signal being indicative of said condition; an electronic circuit for calculating a fuel injection period of said injection valves in accordance with said electrical signal, and for supplying a control signal based on said calculated fuel injection periods to each said driving means; a means for generating a control signal having a predetermined pulse width, said generating means consisting of a C-MOS type element, and; a switching means for feeding said driving means of said injection valves with said control signal provided from said generating means, when said engine is being started.
Claim 2
Dependent Claim
137 words
An electronic fuel injection control device of an internal combustion engine having fuel injection valves disposed upstream of intake valves of said engine and driving means of said injection valves, comprising: a means for detecting a condition of said engine and for generating an electrical signal being indicative of said condition; an electronic circuit for calculating a fuel injection period of said injection valves in accordance with said electrical signal, and for supplying a control signal based on said calculated fuel injection periods to each said driving means; a means for generating a control signal having a predetermined pulse width, said generating means consisting of a C-MOS type element, and; a switching means for feeding said driving means of said injection valves with said control signal provided from said generating means, when said engine is being started.
Claim 3
Dependent Claim
81 words
An electronic fuel injection control device as claimed in claim 1, wherein said switching means comprises a common output terminal connected to said driving means of said injection valves, a first input terminal connected to an output terminal of said electronic circuit, and a second input terminal connected to an output terminal of said generating means, and said switching means is actuated so as to connect said common output terminal with said second input terminal when said engine is being started.
Claim 4
Dependent Claim
40 words
An electronic fuel injection control device as claimed in claim 1, wherein said generating means is triggered by a signal representing a crank angle position of said engine, so as to generate said control signal corresponding to said triggering signal.
Claim 5
Dependent Claim
19 words
An electronic fuel injection control device as claimed in claim 3, wherein said triggering signal is an ignition signal.
Claim 6
Dependent Claim
22 words
An electronic fuel injection control device as claimed in claim 3, wherein said generating means consists of a C-MOS type monostable multivibrator.
Claim 7
Dependent Claim
22 words
An electronic fuel injection control device as claimed in claim 3, wherein said generating means consists of a C-MOS type digital counter.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-12-04 | 1982-06-05 | 1982-12-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-04 | 1986-06-05 | 1986-12-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-04 | 1990-06-05 | 1990-12-05 | $7700.00 | Window Closed / Lapsed |