Patent ID: 7281531

Claim:
A system comprising: a hydrogen fueled internal combustion engine configured to produce an exhaust gas; a fuel system configured to provide a flow of hydrogen fuel and a flow of ambient air to the engine; an EGR system, configured to provide a flow of recirculated gas which includes the exhaust gas; a controller configured to operate the fuel system, and the EGR system such that a torque of the engine is controlled and the engine receives the flow of hydrogen fuel, the flow of ambient air and the flow of recirculated gas in a stoichiometric fuel/air ratio; at least one sensor configured to provide data to the controller for calculating the stoichiometric fuel/air ratio; and a mixture comprising the hydrogen fuel, the ambient air and the recirculated gas provided to the engine in the stoichiometric fuel/air ratio by the fuel system, the EGR system, the controller and the sensor.