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. 01, 2007
Filed:
Sep. 13, 2005
Xiaobin LI, Livonia, MI (US);
Zornitza Pavlinova Pavlova-mackinnon, Farmington Hills, MI (US);
Adedejo Bukola Oladipo, Canton, MI (US);
Rakesh Aneja, Farmington Hills, MI (US);
Xiaobin Li, Livonia, MI (US);
Zornitza Pavlinova Pavlova-MacKinnon, Farmington Hills, MI (US);
Adedejo Bukola Oladipo, Canton, MI (US);
Rakesh Aneja, Farmington Hills, MI (US);
Detroit Diesel Corporation, Detroit, MI (US);
Abstract
A method of reducing nitrogen oxides (NOx) and particulate matter (PM) in compression ignition engine emissions. The method includes monitoring at least one engine sensor that generates a signal in response to at least one engine operating condition, and adjusting at least one engine control parameter in response to the signal such that in-cylinder spacial distribution of equivalence ratio and temperature is substantially maintained to an operating region. The operating region corresponds to a set of equivalence ratio with respect to temperature values that are substantially outside regions supportive of NOx and PM formation. The temperature values are greater than 1650 K, and the equivalence ratio values are greater than 0.5.