Universal fuel injection system
OwnerMarius A. Paul, Ana Paulinventors
Life of this patent
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Abstract
A universal fuel injection system for liquid and gaseous fuels and mixes thereof the universal fuel injection system having a universal fuel injection module interposed between a liquid fuel injector nozzle the universal fuel injection module having a spring-biased gaseous fuel valve connected to a pressurized gaseous fuel source and to a conical poppet mixing valve in the fuel injector nozzle where liquid fuel from the liquid fuel actuator unit and gaseous fuel selectively admitted through the spring-biased gaseous fuel valve mix for discharge through a fuel nozzle discharge orifice.
Claims9
In a fuel injector system having a liquid fuel injector with a liquid fuel actuator unit and an injector nozzle that injects fuel into an engine cylinder, a universal fuel injector system comprising:
- a universal fuel injection module interposed between the liquid fuel actuator unit and the injector nozzle, the injector module having a spring biased gaseous fuel valve with a displacement poppet and a conduit connection to a source of pressurized gaseous fuel, and a conical poppet mixing valve in the injector nozzle having a passage connected to the liquid fuel actuator unit and a passage connected to the gaseous fuel valve, and
- control means for selecting one of a liquid fuel from the liquid fuel actuator unit and a liquid-gaseous fuel in part from the liquid fuel actuator unit and in part from the gaseous fuel source through the spring biased gaseous fuel valve, wherein on selection of the liquid-gaseous fuel, a pilot liquid fuel pulse displaces the poppet of the gaseous fuel valve releasing a charge of gaseous fuel through the gaseous fuel passage to the poppet mixing valve where it mixes with the pilot liquid fuel pulse.
A universal fuel injection system for selectively injecting fuel from a liquid fuel source in a liquid fuel mode and a combined liquid fuel from the liquid fuel source and gaseous fuel from a high pressure gaseous fuel source in a combined liquid-gaseous fuel mode into an engine cylinder comprising:
- a liquid fuel actuator unit and
- a universal fuel injector connected to the liquid fuel actuator unit, the universal fuel injector having an injector nozzle with a conical poppet mixing valve and a gaseous fuel switch valve interposed between the liquid fuel actuator unit and the injector nozzle, the switch valve of the universal fuel injection having a dis placeable spring biased poppet head and a conduit with a passage connected to the high pressure gaseous fuel source, wherein the spring biased poppet head is biased to close the passage of the conduit in the liquid fuel mode and open the passage in the combined liquid-gaseous fuel mode, and
- control means for selecting one of a liquid fuel from the liquid fuel actuator unit and a liquid-gaseous fuel in part from the liquid fuel actuator unit and in part from the gaseous fuel source through the spring biased gaseous fuel valve, where on selection of the liquid-gaseous fuel, the poppet head of the switch valve is displaced and a pilot liquid fuel pulse displaces the conical poppet mixing valve releasing a charge of gaseous fuel through the passage to the poppet mixing valve where it mixes with the pilot liquid fuel pulse before injection into the engine cylinder.
Dependencies are inferred from the claim text.