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Title: Advanced engine management of individual cylinders for control of exhaust species

Abstract

A method and system controls engine-out exhaust species of a combustion engine having a plurality of cylinders. The method typically includes various combinations of steps such as controlling combustion parameters in individual cylinders, grouping the individual cylinders into a lean set and a rich set of one or more cylinders, combusting the lean set in a lean combustion parameter condition having a lean air:fuel equivalence ratio, combusting the rich set in a rich combustion parameter condition having a rich air:fuel equivalence ratio, and adjusting the lean set and the rich set of one or more cylinders to generate net-lean combustion. The exhaust species may have elevated concentrations of hydrogen and oxygen.

Inventors:
 [1];  [1];  [1];
  1. Knoxville, TN
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
985545
Patent Number(s):
7469693
Application Number:
11/691,539
Assignee:
ORO
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
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02T - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
DOE Contract Number:  
AC05-00OR22725
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING

Citation Formats

Graves, Ronald L, West, Brian H, Huff, Shean P, and Parks, II, James E. Advanced engine management of individual cylinders for control of exhaust species. United States: N. p., 2008. Web.
Graves, Ronald L, West, Brian H, Huff, Shean P, & Parks, II, James E. Advanced engine management of individual cylinders for control of exhaust species. United States.
Graves, Ronald L, West, Brian H, Huff, Shean P, and Parks, II, James E. Tue . "Advanced engine management of individual cylinders for control of exhaust species". United States. https://www.osti.gov/servlets/purl/985545.
@article{osti_985545,
title = {Advanced engine management of individual cylinders for control of exhaust species},
author = {Graves, Ronald L and West, Brian H and Huff, Shean P and Parks, II, James E},
abstractNote = {A method and system controls engine-out exhaust species of a combustion engine having a plurality of cylinders. The method typically includes various combinations of steps such as controlling combustion parameters in individual cylinders, grouping the individual cylinders into a lean set and a rich set of one or more cylinders, combusting the lean set in a lean combustion parameter condition having a lean air:fuel equivalence ratio, combusting the rich set in a rich combustion parameter condition having a rich air:fuel equivalence ratio, and adjusting the lean set and the rich set of one or more cylinders to generate net-lean combustion. The exhaust species may have elevated concentrations of hydrogen and oxygen.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {2008},
month = {12}
}

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