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.:

US 8677748 B1

Expired

Date of Patent:

Mar. 25, 2014

Filed:

Jun. 03, 2011

Fresh air flow estimation

Applicants:

Indranil Brahma, Bloomington, IN (US);

Ashwin Vyas, Columbus, IN (US);

Vivek Anand Sujan, Columbus, IN (US);

Phanindra Garimella, Bloomington, IN (US);

John N. Chi, Columbus, IN (US);

Abdoul Karim Abdoul Azizou, Greenwood, IN (US);

Inventors:

Indranil Brahma, Bloomington, IN (US);

Ashwin Vyas, Columbus, IN (US);

Vivek Anand Sujan, Columbus, IN (US);

Phanindra Garimella, Bloomington, IN (US);

John N. Chi, Columbus, IN (US);

Abdoul Karim Abdoul Azizou, Greenwood, IN (US);

Assignee:

Cummins Inc., Columbus, IN (US);

Attorney:

Krieg DeVault LLP

Primary Examiner:

Thai Ba Trieu

Int. Cl.

CPC ...

F02D 23/00 (2006.01); F02B 33/44 (2006.01); F02B 37/12 (2006.01); G01M 15/00 (2006.01); G01F 1/00 (2006.01); G01F 1/12 (2006.01); G06F 19/00 (2011.01);

U.S. Cl.

CPC ...

Abstract

An apparatus includes an operating conditions module that interprets a number of compressor operating parameters; a compressor flow module that determines a compressor inlet flow in response to the number of compressor operating parameters; and a fresh air flow module that provides a fresh air flow value in response to the compressor inlet flow. The operating conditions module further interprets a current mass air flow value, and the apparatus further includes a mass air flow sensor trimming module that adjusts a mass air flow sensor drift value in response to the current mass air flow value and the fresh air flow value. The apparatus includes a diagnostics module that determines a mass air flow sensor is failed in response to the current mass air flow value and the fresh air flow value.

Find Patent Forward Citations

Brahma, Indranil. (2014). Fresh air flow estimation (U.S. Patent No. 8677748). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/8677748

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