The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 27, 2009
Filed:
Dec. 11, 2007
Grant B Carlson, Hammondsport, NY (US);
Karl Heise, Rochester, NY (US);
Grant B Carlson, Hammondsport, NY (US);
Karl Heise, Rochester, NY (US);
Other;
Abstract
Methods and apparatus are disclosed for converting and optimizing the fuel system of an internal combustion engine in a pre-existing (used) vehicle to be fuel flexible and thus to operate on a mixture of fuels (like ethanol and gasoline) from a single fuel tank. The conversion includes adding a fuel composition sensor installed in the fuel line and/or adding an exhaust gas oxygen sensor installed in the engine's exhaust in addition to adding an electronic control unit with at least one fuel injector driver circuit for controlling an output signal to at least one fuel injector for controlling the air to fuel ratio of the engine. The electronic control unit can control both engine ignition timing and the air to fuel ratio of the engine based upon the composition of fuel mixture in the fuel tank. The electronic control unit can also control other aspects of engine operation like intake manifold boost for those engines that have turbo or superchargers.