Patent ID: 7992547
Filing Date: 2011-08-09
Classification: F02M,Y02T

Abstract:
1. A multiple gas fuel delivery system for interchangeably supplying a plurality of gas fuels having different supply pressures to an internal combustion engine, comprising: a gas fuel inlet for receiving a supply of gas fuel; a gas flow control valve for metering a gas fuel flow from the gas fuel inlet according to a demand from an engine; a fuel ejection nozzle for delivering the fuel metered by the gas flow control valve to the engine; a first fuel delivery passage including a first metering jet and extending between the gas flow control valve and the fuel ejection nozzle; and a second fuel delivery passage including a second metering jet and a pressure responsive valve and extending between the gas flow control valve and the fuel ejection nozzle in parallel with the first fuel delivery passage, the pressure responsive valve selectively communicating the second fuel delivery passage depending on a pressure of the gas fuel supplied to the gas fuel inlet.