Single nozzle injection of gasoline and anti-knock fuel
First Claim
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1. Fuel management system for operation of a spark ignition gasoline engine comprising:
- a gasoline engine;
a source of liquid gasoline;
a source of liquid anti-knock fuel;
a proportioning valve receiving the gasoline and anti-knock fuel to discharge a liquid mixture through a first conduit having a controlled gasoline/anti-knock fuel ratio;
a high pressure pump receiving the mixture through the first conduit and delivering the mixture through a second conduit to an injector; and
a fuel management control system for controlling the proportioning valve and the injector for injection of the mixture into a cylinder of the engine to control knockwherein the volume within the first conduit, the high pressure pump, and the second conduit is minimized to improve transient response of the fuel management system.
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Abstract
Fuel management system for operation of a spark ignition engine. The system includes a source of gasoline and a source of anti-knock fuel. A proportioning valve receives the gasoline and the anti-knock fuel to discharge a mixture having a controlled gasoline/anti-knock fuel ratio. A single high pressure pump receives the mixture and delivers the mixture to an injector. A fuel management control system controls the proportioning valve and the injector for injection of the mixture into a cylinder of the engine to control knock. A preferred anti-knock fuel is ethanol.
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Citations
11 Claims
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1. Fuel management system for operation of a spark ignition gasoline engine comprising:
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a gasoline engine; a source of liquid gasoline; a source of liquid anti-knock fuel; a proportioning valve receiving the gasoline and anti-knock fuel to discharge a liquid mixture through a first conduit having a controlled gasoline/anti-knock fuel ratio; a high pressure pump receiving the mixture through the first conduit and delivering the mixture through a second conduit to an injector; and a fuel management control system for controlling the proportioning valve and the injector for injection of the mixture into a cylinder of the engine to control knock wherein the volume within the first conduit, the high pressure pump, and the second conduit is minimized to improve transient response of the fuel management system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. Fuel management system for operation of a spark ignition engine comprising:
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a gasoline engine; a source of gasoline; a source of anti-knock fuel; a high pressure pump receiving the gasoline and anti-knock fuel and including two vanes for separate pressurization of the gasoline and anti-knock fuel; a high pressure proportioning valve receiving the pressurized gasoline and anti-knock fuel to discharge a mixture having a controlled gasoline/anti-knock ratio; an injector for receiving the mixture from the proportioning valve; and a fuel management control system for controlling the proportioning valve and injector for injection of the mixture into a cylinder of an engine wherein the volume of the mixture between the high pressure pump and the injector isminimized to improve transient response of the fuel management system.
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Specification