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:
Nov. 08, 2005
Filed:
Jul. 16, 2003
Thomas William Ryan, Iii, San Antonio, TX (US);
Robert Wayne Burrahm, San Antonio, TX (US);
Rudolf Hermann Stanglmaier, San Antonio, TX (US);
Charles Edward Roberts, Jr., San Antonio, TX (US);
James Corwin Snyder, San Antonio, TX (US);
Lee Gene Dodge, San Antonio, TX (US);
Daniel William Stewart, Helotes, TX (US);
Timothy Joseph Callahan, San Antonio, TX (US);
John Thomas Kubesh, Boerne, TX (US);
Thomas William Ryan, III, San Antonio, TX (US);
Robert Wayne Burrahm, San Antonio, TX (US);
Rudolf Hermann Stanglmaier, San Antonio, TX (US);
Charles Edward Roberts, Jr., San Antonio, TX (US);
James Corwin Snyder, San Antonio, TX (US);
Lee Gene Dodge, San Antonio, TX (US);
Daniel William Stewart, Helotes, TX (US);
Timothy Joseph Callahan, San Antonio, TX (US);
John Thomas Kubesh, Boerne, TX (US);
Southwest Research Institute, San Antonio, TX (US);
Abstract
A heavy-duty flame propagation engine has control systems and exhaust aftertreatment systems adapted to provide ultra-low emissions relative to Diesel engines while achieving comparable fuel consumption at reduced emission levels. The control systems include exhaust gas circulation, variable valve actuation, cylinder deactivation, pilot fuel injection, high energy ignition systems and combinations thereof to provide substantially stoichiometric combustion conditions over an entire load range of the engine. In one embodiment, the engine has direct in-cylinder fuel injection, is adapted for lean air-fuel mixture operation, and includes an oxidation catalyst and a lean NOx adsorber.