Inventors:
Paul A. Spakowski - Pacifica CA
Assignee:
All American Fuel Systems - San Francisco CA
International Classification:
F02M 5100
Abstract:
A supplemental fuel system that renders a carburetor-based primary fuel system capable of operating on ethanol, methanol, or gasoline utilizing single point fuel injection at the induction port of the intake manifold while continuing to use the existing carburetor to meter air and typically fuel as well. The fuel injection is implemented by an injector plate that fits between the carburetor mounting flange on the intake manifold and the carburetor baseplate that carries a first idle injector, a first run injector, a second idle injector, and a second run injector, each operable to atomize alcohol fuel for incorporation into the air or air-fuel mixture flowing through the carburetor. The injectors are supplied by a valved conduit arrangement with the configuration of the valves being controlled by a three-position mode selector switch. The system operates in a selected one of three modes, selected on the basis of whether the vehicle fuel tank contains ethanol, methanol, or gasoline.