US3881453A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electronic fuel injection triggering means
Assignee: Bendix Corp
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Filing: 1973-10-01
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Granted: 1975-05-06
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Expires: 1993-10-01
Abstract
Abstract Electronic fuel injection triggering means includes four switches disposed 90* apart in the same plane and arranged with a rotor rotating with an engine crankshaft and having four magnets stretegically disposed for determining fuel injection timing in accordance with a binary code, whereby the interval from engine staring to the first fuel injection is minimized and the proper injection sequence is continuously maintained.
Inventors
- 👤 Peter W Harper
- 👤 Leslie Confair
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:08
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/009; F02D41/30; F02D41/32; F02D41/36; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/40
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
161 words
In combination with a fuel system having computing means for providing a fuel injection command signal to control the actuation of injector valve means whereby the injection of fuel to an internal combustion engine is controlled, means for triggering the computing means comprising: a rotor rotating with the engine crankshaft and having disposed thereon a first magnet, a second magnet disposed 90* from the first magnet, a third magnet disposed 135* from the second magnet and a fourth magnet disposed 45* from the third magnet; a plurality of magnetic switches surrounding the rotor and opened and closed by the magnets when the rotor rotates so that signals are provided by the switches in accordance with a binary code; and means responsive to the signals from the switches for providing signals for triggering the computing means, said means operable to minimize the interval from the start of the engine rotation to the first fuel injection and for maintaining a desired injection sequence.
Claim 2
Dependent Claim
161 words
In combination with a fuel system having computing means for providing a fuel injection command signal to control the actuation of injector valve means whereby the injection of fuel to an internal combustion engine is controlled, means for triggering the computing means comprising: a rotor rotating with the engine crankshaft and having disposed thereon a first magnet, a second magnet disposed 90* from the first magnet, a third magnet disposed 135* from the second magnet and a fourth magnet disposed 45* from the third magnet; a plurality of magnetic switches surrounding the rotor and opened and closed by the magnets when the rotor rotates so that signals are provided by the switches in accordance with a binary code; and means responsive to the signals from the switches for providing signals for triggering the computing means, said means operable to minimize the interval from the start of the engine rotation to the first fuel injection and for maintaining a desired injection sequence.
Claim 3
Dependent Claim
22 words
Triggering means as described by claim 1, wherein: the plurality of switches include four switches disposed 90* apart in the same plane.
Claim 4
Dependent Claim
102 words
Triggering means as described by claim 1, wherein the means responsive to the signals from the switches for providing signals for triggering the computing means said means operable to to minimize the interval from the start of the engine rotation to the first fuel injection and for maintaining a desired injection sequence, includes: a gate connected to the switches for providing a signal in response to the signals from the switches; and a decoder connected to the gate and to selected switches for providing the triggering signals in response to the signal from the gate and the signals from the selected switches.
Claim 5
Dependent Claim
38 words
Triggering means as described by claim 3, wherein: the triggering signals provided by the decoder in response to the signal from the gate and the signals from the selected switches are provided in accordance with a binary code.
Claim 6
Dependent Claim
27 words
Triggering means as described by claim 3, wherein: the signal from the gate is provided in response to at least one of the signals from the switches.
Claim 7
Dependent Claim
185 words
In combination with a Fuel system having computing means for providing a fuel injection command signal to control the actuation of injector valve means whereby the injection of fuel to an internal combustion engine is controlled, means for triggering the computing means comprising: a rotor rotating with the engine crankshaft and having four magnets strategically disposed thereon; four magnetic switches surrounding the rotor and equally spaced in the same plane, said switches being opened and closed by the magnets when the rotor rotates so that signals are provided by the switches in accordance with a binary code; a gate connected to the switches for providing a signal in response to the signal from at least one of the switches; a decoder connected to the gate and to three of the switches and responsive to the signal from the gate and the signals from the three switches for providing signals in accordance with a binary code for triggering the computing means said means operable to minimize the interval from the start of the engine to the first fuel injection and to maintain a desired injection sequence.
Claim 8
Dependent Claim
185 words
In combination with a Fuel system having computing means for providing a fuel injection command signal to control the actuation of injector valve means whereby the injection of fuel to an internal combustion engine is controlled, means for triggering the computing means comprising: a rotor rotating with the engine crankshaft and having four magnets strategically disposed thereon; four magnetic switches surrounding the rotor and equally spaced in the same plane, said switches being opened and closed by the magnets when the rotor rotates so that signals are provided by the switches in accordance with a binary code; a gate connected to the switches for providing a signal in response to the signal from at least one of the switches; a decoder connected to the gate and to three of the switches and responsive to the signal from the gate and the signals from the three switches for providing signals in accordance with a binary code for triggering the computing means said means operable to minimize the interval from the start of the engine to the first fuel injection and to maintain a desired injection sequence.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-05-05 | 1978-11-04 | 1979-05-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-05-05 | 1982-11-04 | 1983-05-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-05-05 | 1986-11-04 | 1987-05-06 | $7700.00 | Window Closed / Lapsed |