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:
Apr. 12, 2011
Filed:
Sep. 30, 2008
Chao Fu Daniels, Ypsilanti, MI (US);
Guoming George Zhu, Novi, MI (US);
William Charles Mammen, Jr., White Lake, MI (US);
Mengyang Zhang, Troy, MI (US);
Chao Fu Daniels, Ypsilanti, MI (US);
Guoming George Zhu, Novi, MI (US);
William Charles Mammen, Jr., White Lake, MI (US);
Mengyang Zhang, Troy, MI (US);
Visteon Global Technologies, Inc., Van Buren Township, MI (US);
Abstract
Alcohol concentration level of flex fuel is estimated based upon in-cylinder ionization signals. The in-cylinder ionization signals are integrated and the rotational completion point of a chosen percentage of the integration total is identified as the integration location for the operating conditions under observation. The calculated integration location correlates with alcohol concentration level of flex fuel, and the integration calculations provide a basis for a virtual flex fuel sensor that provides calculated estimates of alcohol concentration rather than direct sensing using an expensive physical flex fuel sensor.