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This paper describes a new architecture for a bi-fuel vehicle engine control system, which can reduce system cost while improving function. The proposed architecture uses a modified (dual parameter) PCM strategy to control operation on both fuels, with a simpler additional module to drive fuel injectors and interface to other alternative fuel components. It is shown that this architecture results in improved fuel control and lower tailpipe emissions compared to typical aftermarket systems. Impact on the development process and base vehicle wiring are minimized.

As a part of a continuous research and innovation effort, Ford Motor Company has been evaluating hydrogen since 1997 as an alternative fuel option for vehicles with internal combustion engines. Hydrogen fuel is attractive in that it is the cleanest fuel. Hydrogen, when used in an internal combustion engine, produces an exhaust emission consisting mainly of water vapor, with no carbon dioxide and trace amounts of other regulated pollutants. Hydrogen can be produced from renewable sources which will help reduce the dependence on foreign oil. The implementation of the hydrogen powered IC engine is seen as a strategy to help transition from a petroleum economy to a hydrogen economy and drive development of hydrogen storage, fueling infrastructure and other hydrogen related technologies.