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Title: Hybrid SI-HCCI combustion modes and the potential for control

Abstract

An improvement in the fuel efficiency of gasoline engines is necessary to realize a significant reduction in U.S. energy usage. Homogeneous charge compression ignition (HCCI) in internal combustion engines is of considerable interest because of the potential reductions in flame temperature and nitrogen oxide emissions as well as potential fuel economy improvements resulting from un-throttled operation, faster heat release, and reduced heat transfer losses. Unfortunately for many transportation applications, HCCI may not be possible or practical under the full range of speed and load conditions. Thus, the most important technical developments needed to achieve wide-spread HCCI utilization are expanding the operational range and the ability to switch between HCCI and traditional propagating flame (e.g., spark ignition) combustion as power and speed change. Several recent publications and presentations have begun to address the control issues but have not focused on the fundamental nature of the transition dynamics associated with switching from SI to HCCI combustion. The development of both combustion-mode switching and stabilization technologies requires that the fundamental nature of the transition be well understood, especially in the context of realistic engine conditions.

Authors:
 [1];  [1];  [1];  [1]
  1. ORNL
Publication Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE)
OSTI Identifier:
958777
DOE Contract Number:  
DE-AC05-00OR22725
Resource Type:
Conference
Resource Relation:
Conference: 5th US Combustion Meeting, San Diego, CA, USA, 20070325, 20070328
Country of Publication:
United States
Language:
English
Subject:
33 ADVANCED PROPULSION SYSTEMS; COMBUSTION; COMBUSTION PROPERTIES; COMPRESSION; EFFICIENCY; ENGINES; FLAMES; FUEL CONSUMPTION; HEAT TRANSFER; IGNITION; INTERNAL COMBUSTION ENGINES; NITROGEN OXIDES; STABILIZATION; HCCI; nonlinear controls; combustion

Citation Formats

Edwards, Kevin Dean, Wagner, Robert M, Daw, C Stuart, and Green Jr, Johney Boyd. Hybrid SI-HCCI combustion modes and the potential for control. United States: N. p., 2007. Web.
Edwards, Kevin Dean, Wagner, Robert M, Daw, C Stuart, & Green Jr, Johney Boyd. Hybrid SI-HCCI combustion modes and the potential for control. United States.
Edwards, Kevin Dean, Wagner, Robert M, Daw, C Stuart, and Green Jr, Johney Boyd. Mon . "Hybrid SI-HCCI combustion modes and the potential for control". United States. doi:.
@article{osti_958777,
title = {Hybrid SI-HCCI combustion modes and the potential for control},
author = {Edwards, Kevin Dean and Wagner, Robert M and Daw, C Stuart and Green Jr, Johney Boyd},
abstractNote = {An improvement in the fuel efficiency of gasoline engines is necessary to realize a significant reduction in U.S. energy usage. Homogeneous charge compression ignition (HCCI) in internal combustion engines is of considerable interest because of the potential reductions in flame temperature and nitrogen oxide emissions as well as potential fuel economy improvements resulting from un-throttled operation, faster heat release, and reduced heat transfer losses. Unfortunately for many transportation applications, HCCI may not be possible or practical under the full range of speed and load conditions. Thus, the most important technical developments needed to achieve wide-spread HCCI utilization are expanding the operational range and the ability to switch between HCCI and traditional propagating flame (e.g., spark ignition) combustion as power and speed change. Several recent publications and presentations have begun to address the control issues but have not focused on the fundamental nature of the transition dynamics associated with switching from SI to HCCI combustion. The development of both combustion-mode switching and stabilization technologies requires that the fundamental nature of the transition be well understood, especially in the context of realistic engine conditions.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}

Conference:
Other availability
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