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:
Jun. 30, 2009
Filed:
Nov. 08, 2004
Wade J. Robel, Peoria, IL (US);
James J. Driscoll, Dunlap, IL (US);
Gerald N. Coleman, Peterborough, GB;
Kevin J. Knox, Peoria, IL (US);
Wade J. Robel, Peoria, IL (US);
James J. Driscoll, Dunlap, IL (US);
Gerald N. Coleman, Peterborough, GB;
Kevin J. Knox, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A power source is provided for use with selective catalytic reduction systems for exhaust-gas purification. The power source includes a first cylinder group with a first air-intake passage and a first exhaust passage, and a second cylinder group with a second air-intake passage and a second exhaust passage. The second air-intake passage is fluidly isolated from the first air-intake passage. A fuel-supply device may be configured to supply fuel into the first exhaust passage, and a catalyst may be disposed downstream of the fuel-supply device to convert at least a portion of the exhaust stream in the first exhaust passage into ammonia.