System and method of stoichiometric combustion for hydrogen fueled internal combustion engines

A method of operating a hydrogen powered internal combustion engine comprising:

• providing flows of hydrogen fuel, air and recirculated exhaust gas to the engine;
• operating the engine with a mixture comprised of the hydrogen fuel, the air and the recirculated exhaust gas;
• determining the flows of the hydrogen fuel, the air and the recirculated exhaust gas necessary to provide a stoichiometric fuel/air ratio of the mixture during the operating step;
• and
• regulating the flows during the operating step to reduce throttling and control torque at engine loads and corresponding air/EGR ratios above a predetermined amount.

A method of operating a hydrogen powered internal combustion engine comprising:

• providing a fuel system configured to provide a flow of hydrogen fuel and a flow of ambient air to the engine;
• providing an EGR system configured to provide a flow of recirculated gas which includes exhaust gas from the engine;
• providing a controller configured to operate the fuel system, and the EGR system;
• providing at least one sensor configured to provide data to the controller;
• and
• operating the fuel system, the EGR system, the controller and the sensor to control a torque of the engine, to reduce throttling, and to provide a mixture to the engine comprising the hydrogen fuel, the ambient air and the recirculated gas in a stoichiometric fuel/air ratio.