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. 27, 2008
Filed:
Oct. 23, 2006
Kevin P. Duffy, Metamora, IL (US);
Andrew J. Kieser, Morton, IL (US);
Anthony Rodman, Chillicothe, IL (US);
Michael P. Liechty, Chillicothe, IL (US);
Carl-anders Hergart, Peoria, IL (US);
William L. Hardy, Peoria, IL (US);
Kevin P. Duffy, Metamora, IL (US);
Andrew J. Kieser, Morton, IL (US);
Anthony Rodman, Chillicothe, IL (US);
Michael P. Liechty, Chillicothe, IL (US);
Carl-Anders Hergart, Peoria, IL (US);
William L. Hardy, Peoria, IL (US);
Caterpillar Inc., Peoria, IL (US);
Abstract
A homogeneous charge compression ignition engine operates by injecting liquid fuel directly in a combustion chamber, and mixing the fuel with recirculated exhaust and fresh air through an auto ignition condition of the fuel. The engine includes at least one turbocharger for extracting energy from the engine exhaust and using that energy to boost intake pressure of recirculated exhaust gas and fresh air. Elevated proportions of exhaust gas recirculated to the engine are attained by throttling the fresh air inlet supply. These elevated exhaust gas recirculation rates allow the HCCI engine to be operated at higher speeds and loads rendering the HCCI engine a more viable alternative to a conventional diesel engine.