skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons

Abstract

Certain exhaust after-treatment devices, at least periodically, require the addition of unburnt hydrocarbons in order to create reductant-rich exhaust conditions. The present disclosure adds unburnt hydrocarbons to exhaust from at least one combustion chamber by positioning, at least partially within a combustion chamber, a mixed-mode fuel injector operable to inject fuel into the combustion chamber in a first spray pattern with a small average angle relative to a centerline of the combustion chamber and a second spray pattern with a large average angle relative to the centerline of the combustion chamber. An amount of fuel is injected in the first spray pattern into a non-combustible environment within the at least one combustion chamber during at least one of an expansion stroke and exhaust stroke. The exhaust with the unburnt amount of fuel is moved into an exhaust passage via an exhaust valve.

Inventors:
 [1];  [2]
  1. Corby, GB
  2. Peoria, IL
Publication Date:
Research Org.:
Caterpillar Inc., Deerfield, IL (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
919064
Patent Number(s):
7,287,372
Application Number:
11/159,903
Assignee:
Caterpillar Inc. (Peoria, IL)
DOE Contract Number:  
FC05-97OR22605
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS

Citation Formats

Coleman, Gerald N, and Kesse, Mary L. Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons. United States: N. p., 2007. Web.
Coleman, Gerald N, & Kesse, Mary L. Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons. United States.
Coleman, Gerald N, and Kesse, Mary L. 2007. "Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons". United States. https://www.osti.gov/servlets/purl/919064.
@article{osti_919064,
title = {Exhaust after-treatment system with in-cylinder addition of unburnt hydrocarbons},
author = {Coleman, Gerald N and Kesse, Mary L},
abstractNote = {Certain exhaust after-treatment devices, at least periodically, require the addition of unburnt hydrocarbons in order to create reductant-rich exhaust conditions. The present disclosure adds unburnt hydrocarbons to exhaust from at least one combustion chamber by positioning, at least partially within a combustion chamber, a mixed-mode fuel injector operable to inject fuel into the combustion chamber in a first spray pattern with a small average angle relative to a centerline of the combustion chamber and a second spray pattern with a large average angle relative to the centerline of the combustion chamber. An amount of fuel is injected in the first spray pattern into a non-combustible environment within the at least one combustion chamber during at least one of an expansion stroke and exhaust stroke. The exhaust with the unburnt amount of fuel is moved into an exhaust passage via an exhaust valve.},
doi = {},
url = {https://www.osti.gov/biblio/919064}, journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue Oct 30 00:00:00 EDT 2007},
month = {Tue Oct 30 00:00:00 EDT 2007}
}