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:
Dec. 04, 2012
Filed:
Jan. 28, 2010
David T. Falkowski, Blaine, MN (US);
Nick V. Halstead, Cedar, MN (US);
Deborah A. Klinkert, Plymouth, MN (US);
Matthew J. Ethen, New Brighton, MN (US);
Luke R. Staples, St. Louis Park, MN (US);
David T. Falkowski, Blaine, MN (US);
Nick V. Halstead, Cedar, MN (US);
Deborah A. Klinkert, Plymouth, MN (US);
Matthew J. Ethen, New Brighton, MN (US);
Luke R. Staples, St. Louis Park, MN (US);
Cummins Power Generation, Inc., Minneapolis, MN (US);
Abstract
An open or closed loop EFI system integrating an alcohol sensor is provided on a genset engine. The EFI system provides acceptable engine performance and efficiency when using fuels or fuel blends over a wide band and when starting from a cold state, i.e., starting the engine after the engine has not run for a relatively long period of time. The alcohol sensor enables acceptable operation while the genset engine is cold. The alcohol sensor sends data to the electronic control unit (ECU) and this data, as well as data provided by other sensors that may be available such as an air flow sensor, is used to determine the optimal air-to-fuel ratio (AFR). The ECU actuates the fuel injector which sends the correct amount of atomized fuel to mix with the air flow to be combusted. The fuel mixture, at the requested AFR, enables the engine to start and operate efficiently from a cold state even if the fuel blend has been changed from a previous operation of the engine.