Ford Global Technolgoies, LLC

Westport Power Inc.

John Milton Lapetz

Peter Douglas Kuechler

Allen Dennis Dobryden

Mark E Dunn

Alan B Welch

A flexible-fuel internal combustion engine apparatus comprises a combustion chamber, an intake valve, a first fuel injector, a second fuel injector, and a computer. The intake valve is operable to admit an intake charge into the combustion chamber. The first fuel injector injects a gaseous fuel directly into the combustion chamber. The second fuel injector injects a liquid fuel into the intake charge upstream of the intake valve. The computer is operatively connected with the first fuel injector and the second fuel injector to actuate injection of fuel respectively therefrom. The computer is programmed to command a gaseous-to-liquid fuel ratio as a function of at least one operating parameter from a group comprising gaseous fuel pressure, gaseous fuel mass, engine speed, engine torque, inlet air temperature, inlet air humidity, knock detection, operating history, torque command, and emissions.

Apparatus and method for fuelling a flexible-fuel internal combustion engine

A control system for a bi-fuel engine is provided. The control system includes a powertrain controller and a bi-fuel controller The controller has a set of fuel injector drivers The controller has a set of gasoline fuel injector drivers and a set of alternate fuel (AF) fuel injector drivers Each of drivers in controller is electrically connected to a driver and a driver in controller Thus, a control signal generated by a single driver can be utilized by either of drivers to generate a corresponding control signal for controlling a gasoline fuel injector or a AF fuel injector respectively.

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Northville, MI, United States of America

John Milton Lapetz