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Title: Exhaust gas recirculation in a homogeneous charge compression ignition engine

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.

Inventors:
 [1];  [2];  [3];  [3];  [4];  [4]
  1. Metamora, IL
  2. Morton, IL
  3. Chillicothe, IL
  4. Peoria, IL
Issue Date:
Research Org.:
National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
981837
Patent Number(s):
7377270
Application Number:
11/584,889
Assignee:
Caterpillar Inc. (Peoria, IL)
Patent Classifications (CPCs):
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02M - SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
DOE Contract Number:  
FC26-05NT4 2412
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Duffy, Kevin P, Kieser, Andrew J, Rodman, Anthony, Liechty, Michael P, Hergart, Carl-Anders, and Hardy, William L. Exhaust gas recirculation in a homogeneous charge compression ignition engine. United States: N. p., 2008. Web.
Duffy, Kevin P, Kieser, Andrew J, Rodman, Anthony, Liechty, Michael P, Hergart, Carl-Anders, & Hardy, William L. Exhaust gas recirculation in a homogeneous charge compression ignition engine. United States.
Duffy, Kevin P, Kieser, Andrew J, Rodman, Anthony, Liechty, Michael P, Hergart, Carl-Anders, and Hardy, William L. Tue . "Exhaust gas recirculation in a homogeneous charge compression ignition engine". United States. https://www.osti.gov/servlets/purl/981837.
@article{osti_981837,
title = {Exhaust gas recirculation in a homogeneous charge compression ignition engine},
author = {Duffy, Kevin P and Kieser, Andrew J and Rodman, Anthony and Liechty, Michael P and Hergart, Carl-Anders and Hardy, William L},
abstractNote = {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.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {5}
}

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