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:
-
- Corby, GB
- Peoria, IL
- Issue Date:
- Research Org.:
- Caterpillar Inc., Deerfield, IL (United States)
- Sponsoring Org.:
- USDOE
- OSTI Identifier:
- 919064
- Patent Number(s):
- 7287372
- Application Number:
- 11/159,903
- Assignee:
- Caterpillar Inc. (Peoria, IL)
- Patent Classifications (CPCs):
-
F - MECHANICAL ENGINEERING F01 - MACHINES OR ENGINES IN GENERAL F01N - GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL
F - MECHANICAL ENGINEERING F02 - COMBUSTION ENGINES F02D - CONTROLLING COMBUSTION ENGINES
- 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. Tue .
"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 = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2007},
month = {10}
}