Patent US3720192A successfully refreshed from Google Patents.
US3720192A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Controlling device for fuel injection of an internal combustion engine
Assignee: Nissan Motor Co Ltd
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Filing: 1970-09-09
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Granted: 1973-03-13
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Expires: 1990-09-09
Abstract
Abstract A controlling device for controlling an operation of fuel injection system of an internal combustion engine, comprising an optical means having light absorbing characteristics and a photodetecting means arranged to move relative to said optical means, the optical means has prerecorded optical variation of the light absorbing characteristics corresponding to requested twodimensional characteristics of the operation of the internal combustion engine, the optical variation is detected by the photodetecting means to produce an electric output voltage to control the injection period of fuel injector to obtain desired output characteristics of the internal combustion engine.
Inventors
- 👤 S Aono
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 09:52
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/02; F02D; F02D41/00; F02D41/30
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
179 words
A device for controlling a fuel injector in an internal combustion engine, said device comprising: a. photographic film means having a darkness gradient in accordance with desired engine operating conditions which is a continuous function of two independent variable engine characteristics; b. first means, operatively connected to said engine for detecting a first of said two independent characteristics and for moving said photographic film means in accordance with the detected first characteristic; c. light source means for illuminating said photographic film means; d. photodetecting means for moving relative to said photographic film means in response to the second of said independent characteristics for detecting light passing through said photographic film means whereby the output of said photodetecting means is a continuous function of said first and second independent characteristics; and e. circuit means for developing a control signal in accordance with the output of said photodetecting means, wherein said control signal is applied to said fuel injector for controlling the output of said fuel injector whereby said fuel injector is controlled as a function of said two independent characteristics.
Claim 2
Independent Claim
179 words
A device for controlling a fuel injector in an internal combustion engine, said device comprising: a. photographic film means having a darkness gradient in accordance with desired engine operating conditions which is a continuous function of two independent variable engine characteristics; b. first means, operatively connected to said engine for detecting a first of said two independent characteristics and for moving said photographic film means in accordance with the detected first characteristic; c. light source means for illuminating said photographic film means; d. photodetecting means for moving relative to said photographic film means in response to the second of said independent characteristics for detecting light passing through said photographic film means whereby the output of said photodetecting means is a continuous function of said first and second independent characteristics; and e. circuit means for developing a control signal in accordance with the output of said photodetecting means, wherein said control signal is applied to said fuel injector for controlling the output of said fuel injector whereby said fuel injector is controlled as a function of said two independent characteristics.
Claim 3
Independent Claim
179 words
A device for controlling a fuel injector in an internal combustion engine, said device comprising: a. photographic film means having a darkness gradient in accordance with desired engine operating conditions which is a continuous function of two independent variable engine characteristics; b. first means, operatively connected to said engine for detecting a first of said two independent characteristics and for moving said photographic film means in accordance with the detected first characteristic; c. light source means for illuminating said photographic film means; d. photodetecting means for moving relative to said photographic film means in response to the second of said independent characteristics for detecting light passing through said photographic film means whereby the output of said photodetecting means is a continuous function of said first and second independent characteristics; and e. circuit means for developing a control signal in accordance with the output of said photodetecting means, wherein said control signal is applied to said fuel injector for controlling the output of said fuel injector whereby said fuel injector is controlled as a function of said two independent characteristics.
Claim 4
Independent Claim
179 words
A device for controlling a fuel injector in an internal combustion engine, said device comprising: a. photographic film means having a darkness gradient in accordance with desired engine operating conditions which is a continuous function of two independent variable engine characteristics; b. first means, operatively connected to said engine for detecting a first of said two independent characteristics and for moving said photographic film means in accordance with the detected first characteristic; c. light source means for illuminating said photographic film means; d. photodetecting means for moving relative to said photographic film means in response to the second of said independent characteristics for detecting light passing through said photographic film means whereby the output of said photodetecting means is a continuous function of said first and second independent characteristics; and e. circuit means for developing a control signal in accordance with the output of said photodetecting means, wherein said control signal is applied to said fuel injector for controlling the output of said fuel injector whereby said fuel injector is controlled as a function of said two independent characteristics.
Claim 5
Dependent Claim
39 words
A controlling device as claimed in claim 1 wherein said photographic film means is wound around a cylinder arranged in rotatable manner about an axis, and the rotating angle deviation is proportional to intake manifold pressure of the engine.
Claim 6
Dependent Claim
16 words
A controlling device as claimed in claim 1, wherein the photodetecting means is a photoelectronic converter.
Claim 7
Dependent Claim
22 words
A controlling device as claimed in claim 2, wherein photodetecting means is arranged to move along the axial direction of the cylinder.
Claim 8
Dependent Claim
53 words
A controlling device as claimed in claim 3, wherein the cylinder carrying the photographic film means rotates in proportion to the intake manifold pressure of the engine and the photodetecting means moves along the axial direction of the cylinder and in proportion to number of revolutions per minute of the internal combustion engine.
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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) | 1976-03-12 | 1976-09-11 | 1977-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-12 | 1980-09-11 | 1981-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-12 | 1984-09-11 | 1985-03-13 | $7700.00 | Window Closed / Lapsed |