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:
May. 24, 2011
Filed:
Jun. 29, 2007
David C. Atkinson, Dunlap, IL (US);
Christopher F. Gallmeyer, Peoria, IL (US);
Ashutosh Katari, Peoria, IL (US);
Brian V. Tranel, Peoria, IL (US);
David C. Atkinson, Dunlap, IL (US);
Christopher F. Gallmeyer, Peoria, IL (US);
Ashutosh Katari, Peoria, IL (US);
Brian V. Tranel, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A method of determining and regulating a mass flow rate exhaust gases recirculated into an engine is disclosed. The method may comprise directing the exhaust gases through a venturi and sensing a differential exhaust pressure across the venturi. The method may further include sensing an absolute exhaust pressure at the venturi, and sensing a temperature of the exhaust gases. The method may further include determining the mass flow rate of the exhaust based on the sensed differential fluid pressure, absolute fluid pressure, and temperature.