Exhaust gas recirculation in a homogeneous charge...

Internal-combustion engines – Charge forming device – Exhaust gas used with the combustible mixture

Reexamination Certificate

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Details

C123S568110, C060S605200

Reexamination Certificate

active

11584889

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.

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PCT International Search Report; Applicant Ref. No.: 06-255; International Appln. No.: PCT/US2007/013603; Filing Date Jun. 8, 2007; Applicant: Caterpillar Inc.

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