US3613649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection systems for internal-combustion engines fed with a fuel-and-air mixture
Assignee: Eaton Corp
•
Filing: 1970-06-01
•
Granted: 1971-10-19
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Expires: 1990-06-01
Abstract
Abstract In a fuel injection system for a mixture-aspiring internalcombustion engine, fuel is injected through a nozzle unit equipped with an ultrasonic transducer so that when the transducer is deenergized the nozzle produces a solid jet passing across the induction pipe of the engine into a collector tube through which the fuel returns to the fuel tank, while when the transducer is energized, the jet disintegrates, the fuel being atomized and therefore substantially all admixed to the induced air. The quantity of fuel thus introduced during each stroke or revolution with the airflow in the induction pipe is determined by the length of the energization period of the transducer.
Inventors
- 👤 Norman Moss
- 👤 Michael John Broad
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:24
CPC Classifications
F; F02; F02M; F02M69/00; F02M69/04; F02M69/041; Y; Y10; Y10S; Y10S261/00; Y10S261/48; Y10S261/69
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
166 words
A fuel injection system for an internal-combustion engine fed with a fuel-and-air mixture with a nozzle for injecting fuel into a flow duct through which air flows to the engine, and with an ultrasonic vibrator associated with the nozzle for producing atomization of the fuel injected by the nozzle, characterized by the combination of a fuel-feed device which maintains a continuous flow of fuel to the nozzle, the nozzle being so constructed as to emit in the absence of ultrasonic vibrations, a solid jet of fuel, a timing control device which limits the energization of the ultrasonic atomizer to uniformly spaced periods each constituting an adjustable part of a cycle related to the revolution of the engine, and the provision, in the flow duct of a collector aperture connected to a fuel-return line and so arranged in the flow duct as to intercept substantially all the fuel coming from the nozzle when said fuel omitted from the nozzle is in the form of a solid jet.
Claim 2
Dependent Claim
166 words
A fuel injection system for an internal-combustion engine fed with a fuel-and-air mixture with a nozzle for injecting fuel into a flow duct through which air flows to the engine, and with an ultrasonic vibrator associated with the nozzle for producing atomization of the fuel injected by the nozzle, characterized by the combination of a fuel-feed device which maintains a continuous flow of fuel to the nozzle, the nozzle being so constructed as to emit in the absence of ultrasonic vibrations, a solid jet of fuel, a timing control device which limits the energization of the ultrasonic atomizer to uniformly spaced periods each constituting an adjustable part of a cycle related to the revolution of the engine, and the provision, in the flow duct of a collector aperture connected to a fuel-return line and so arranged in the flow duct as to intercept substantially all the fuel coming from the nozzle when said fuel omitted from the nozzle is in the form of a solid jet.
Claim 3
Dependent Claim
48 words
A fuel injection system as claimed in claim 1 for a reciprocating piston engine, characterized by a timing device so connected to the engine as to limit energization of the ultrasonic atomizer to an adjustable part of each suction stroke of each cylinder fed by the flow duct.
Claim 4
Dependent Claim
21 words
A fuel system as claimed in claim 1 characterized by an automatic adjusting device for the length of said adjustable part.
Claim 5
Dependent Claim
21 words
A fuel system as claimed in claim 2 characterized by an automatic adjusting device for the length of said adjustable part.
References Cited (Backward Citations)
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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) | 1974-10-18 | 1975-04-19 | 1975-10-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-18 | 1979-04-19 | 1979-10-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-18 | 1983-04-19 | 1983-10-19 | $7700.00 | Window Closed / Lapsed |