System for supplying different fuels to otto engines with electronic fuel-injection
Patent 4922862 Issued on May 8, 1990. Estimated Expiration Date: 
November 28, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 28, 2008. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesModified internal combustion engine and method for utilizing low and medium BTU gaseous fuels Spark advance control mechanism for dual fuel engine Direct liquid injection of liquid petroleum gas Fuel control system Spark timing control of multiple fuel engine Patent #: 4703732 InventorAssigneeApplicationNo. 276628 filed on 11/28/1988US Classes:123/406.47, With fuel injection control123/478, Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve)123/575Diverse fuel supplyExaminersPrimary: Argenbright, Tony M.Attorney, Agent or FirmForeign Patent References
International ClassesF02D 019/06F02M 037/00 F02P 005/04 Foreign Application Priority Data1987-12-28 ITAbstractThe 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.Field of SearchFuels, lubricants and additivesGas engines (diesel type) convertible from liquid to gas or operable with liquid and gas Actuator circuit (e.g., engine condition responsive electronic circuit actuates injector valve) Combined liquid and gaseous fuel Diesel engine convertible from liquid to gas Diverse fuel supply Fuel switched in response to engine starting condition Fuel switched, condition responsive to load Fuel switched in response to engine temperature | |
