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Flexible Fuel Engines with Exhaust Gas Recirculation for Improved Engine Efficiency

Abstract: 

A method and system for use with flexible fuel engines capable of operating with arbitrary mixtures of gasoline and alternative fuel. The engine is equipped with an EGR loop and a control system, such that, as the relative amount of alternative fuel decreases, the amount of EGR provided to the engine increases.
A method and system for use with flexible fuel engines capable of operating with arbitrary mixtures of gasoline and alternative fuel. The engine is equipped with an EGR loop and a control system, such that, as the relative amount of alternative fuel decreases, the amount of EGR provided to the engine increases.

Patent Number: 
7,487,766
Date Of Issue: 
02/10/2009
Inventors: 

Terrence F. Alger II; Barrett W. Mangold