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:
Aug. 14, 2007
Filed:
Apr. 27, 2006
William Boley, Lafayette, IN (US);
Stuart Niese, Lafayette, IN (US);
Ryan E. Meister, Lafayette, IN (US);
William Boley, Lafayette, IN (US);
Stuart Niese, Lafayette, IN (US);
Ryan E. Meister, Lafayette, IN (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
An engine emissions control system is provided. The system may include an exhaust producing engine and an exhaust system through which the exhaust produced by the engine may flow. The system may also include a NOsensor configured to take a NOmeasurement of the amount of NOin the exhaust produced by the engine. The system may further include a charge density sensing system configured to measure the charge density of a combustion mixture of the engine. In addition, the system may include a controller configured to receive information related to the measurement of the amount of NO. The controller may be further configured to control a charge density of the combustion mixture with which the engine operates based on the NOmeasurement and the charge density measured by the charge density sensing system.