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:
Jul. 17, 2018
Filed:
Jul. 13, 2016
Applicant:
Ford Global Technologies, Llc, Dearborn, MI (US);
Inventors:
Douglas Raymond Martin, Canton, MI (US);
John Eric Rollinger, Troy, MI (US);
Richard E. Soltis, Saline, MI (US);
Jennifer Helen Chang, Livonia, MI (US);
Assignee:
Ford Global Technologies, LLC, Dearborn, MI (US);
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F02D 41/30 (2006.01); F02D 41/26 (2006.01); F02D 41/14 (2006.01);
U.S. Cl.
CPC ...
F02D 41/3005 (2013.01); F02D 41/1454 (2013.01); F02D 41/26 (2013.01);
Abstract
Methods and systems are provided for estimating exhaust pressure based on an exhaust air/fuel ratio sensor. In one example, a method may comprise estimating an exhaust pressure based on periodic waveform outputs of an exhaust air/fuel ratio (AFR) sensor, and adjusting at least one engine operating parameter based on the estimated exhaust pressure. The exhaust pressure may be estimated based on one or more of the standard deviation and frequency of the periodic waveform outputs.