US4922862A
Expired / Lapsed
US
⏱️ 0.0 years remaining
System for supplying different fuels to otto engines with electronic fuel-injection
Assignee: Sprint Auto SpA
•
Filing: 1988-11-28
•
Granted: 1990-05-08
•
Expires: 2008-11-28
Abstract
Abstract The system for supplying different fuels to Otto engines with electronic fuel-injection comprises a tank containing liquid gas under pressure, a pumping unit that delivers the liquid gas to an injection nozzle that is also used for the injection of petrol. A signal multiplier, modifies the parameters fixed by an electronic control box that controls the injection nozzle and the spark plug while a switch selects in turn the supplying of petrol or of liquid gas.
Inventors
- 👤 Carlo Casacci
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:23
CPC Classifications
F; F02; F02D; F02D41/00; F02D41/0025; F02D19/00; F02D19/06; F02D19/0602; F02D19/0607; F02D19/061; F02D19/0613; F02D19/0639; F02D19/0642; F02D19/0647; F02D19/0663; F02D19/0673; F02D19/0678; F02D19/0686; F02D19/0694; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/027; F02D19/066; Y; Y02; Y02T; Y02T10/00; Y02T10/10; Y02T10/30
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
135 words
A system, for supplying different fuels to Otto engines with electronic fuel-injection comprising: a primary fuel supply pump designed to send petrol to at least one injection nozzle, situated on an inlet duct, upstream of a valve; an electronic control box, designed to control the enabling of said injection nozzle in accordance with preset supply parameters; a tank containing liquid gas under pressure; a pumping unit designed to deliver said liquid gas to said injection nozzle; a switch for the enabling, in turn, of said primary fuel supply pump or of said pumping unit; a signal multiplier, located between said injection nozzle and said control box, said multiplier being actuated by said switch, when said pumping unit is actuated, and designed to intervene to modify said supply parameters in accordance with a constant correction value.
Claim 2
Independent Claim
135 words
A system, for supplying different fuels to Otto engines with electronic fuel-injection comprising: a primary fuel supply pump designed to send petrol to at least one injection nozzle, situated on an inlet duct, upstream of a valve; an electronic control box, designed to control the enabling of said injection nozzle in accordance with preset supply parameters; a tank containing liquid gas under pressure; a pumping unit designed to deliver said liquid gas to said injection nozzle; a switch for the enabling, in turn, of said primary fuel supply pump or of said pumping unit; a signal multiplier, located between said injection nozzle and said control box, said multiplier being actuated by said switch, when said pumping unit is actuated, and designed to intervene to modify said supply parameters in accordance with a constant correction value.
Claim 3
Dependent Claim
31 words
A system as in claim 1, wherein said signal multiplier is further designed to modify the ignition parameters fixed by said electronic control box for the enabling of a spark plug.
References Cited (Backward Citations)
US4306532A
Cited
JPS5720527A
Cited
US4495930A
Cited
EP0066327A1
Cited
JPS5827834A
Cited
US4430978A
Cited
US4399780A
Cited
EP0084219A1
Cited
WO1983003120A1
Cited
DE3233935A1
Cited
EP0157511A1
Cited
US4703732A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-05-07 | 1993-11-06 | 1994-05-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-05-07 | 1997-11-06 | 1998-05-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-05-07 | 2001-11-06 | 2002-05-08 | $7700.00 | Window Closed / Lapsed |