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:
Sep. 27, 2005
Filed:
Oct. 01, 2002
Charles E. Roberts, Jr., San Antonio, TX (US);
Andrew C. Matheaus, San Antonio, TX (US);
David P. Branyon, San Antonio, TX (US);
Rudolf H Stanglmaier, San Antonio, TX (US);
Lee G. Dodge, San Antonio, TX (US);
Thomas W. Ryan, Iii, San Antonio, TX (US);
Daniel W. Stewart, Helotes, TX (US);
Charles E. Roberts, Jr., San Antonio, TX (US);
Andrew C. Matheaus, San Antonio, TX (US);
David P. Branyon, San Antonio, TX (US);
Rudolf H Stanglmaier, San Antonio, TX (US);
Lee G. Dodge, San Antonio, TX (US);
Thomas W. Ryan, III, San Antonio, TX (US);
Daniel W. Stewart, Helotes, TX (US);
Other;
Abstract
A method for controlling the temperature and/or space velocity of exhaust gas passing through an aftertreatment device disposed in the exhaust system of a diesel engine provides an optimal environment for efficient conversion of NOx and undesirable emissions during transient and steady state engine operation. The method includes controlling intake and/or exhaust valve timing, either singly or in combination with fuel injection timing and selective individual cylinder cutout, in response to sensed engine operating parameters.