Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode

Title: Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode

Full Record
Other Related Research

Abstract

This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.

Inventors:

Wagner, Robert M ^[1]; Daw, Charles S ^[1]; Green, Johney B ^[1]; Edwards, Kevin D ^[1]

Knoxville, TN

Publication Date:: 2008-10-07

Research Org.:: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 985417

Patent Number(s):: 7,431,011

Application Number:: 11/670,485

Assignee:: UT-Battelle, LLC (Oak Ridge, TN) ORO

DOE Contract Number:: AC05-00OR22725

Resource Type:: Patent

Country of Publication:: United States

Language:: English

Subject:: 42 ENGINEERING

Citation Formats


                    Wagner, Robert M, Daw, Charles S, Green, Johney B, and Edwards, Kevin D. Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode.  United States: N. p., 2008. 
        Web.

Copy to clipboard


                    Wagner, Robert M, Daw, Charles S, Green, Johney B, & Edwards, Kevin D. Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode.  United States.

Copy to clipboard


                    Wagner, Robert M, Daw, Charles S, Green, Johney B, and Edwards, Kevin D. Tue .  
        "Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode".  United States.  https://www.osti.gov/servlets/purl/985417.

Copy to clipboard


                    
@article{osti_985417,

  title        = {Method and device for diagnosing and controlling combustion instabilities in internal combustion engines operating in or transitioning to homogeneous charge combustion ignition mode},

  author       = {Wagner, Robert M and Daw, Charles S and Green, Johney B and Edwards, Kevin D},

  abstractNote = {This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.},

  doi          = {},

  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {2008},

  month        = {10}

}

Copy to clipboard

Patent:

View Patent

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Understanding the dynamics of spark-assisted HCCI combustion

Conference Edwards, Kevin Dean ; Daw, C Stuart ; Wagner, Robert M ; ...

Spark assist appears to offer considerable potential for increasing the speed and load range over which homogeneous charge compression ignition (HCCI) is possible in gasoline engines. Numerous experimental studies of the transition between conventional spark-ignited (SI) propagating-flame combustion and HCCI combustion in gasoline engines with spark assist have demonstrated a high degree of deterministic coupling between successive combustion events. Analysis of this coupling suggests that the transition between SI and HCCI can be described as a sequence of bifurcations in a low-dimensional dynamic map. In this paper we describe methods for utilizing the deterministic relationship between cycles to extract globalmore »« less
Modeling Cyclic Variability in Spark-Assisted HCCI

Journal Article Daw, C Stuart ; Edwards, Kevin Dean ; Wagner, Robert M ; ... - Journal of Engineering for Gas Turbines & Power

Spark assist appears to offer considerable potential for increasing the speed and load range over which homogeneous charge compression ignition (HCCI) is possible in gasoline engines. Numerous experimental studies of the transition between conventional spark-ignited (SI) propagating-flame combustion and HCCI combustion in gasoline engines with spark assist have demonstrated a high degree of deterministic coupling between successive combustion events. Analysis of this coupling suggests that the transition between SI and HCCI can be described as a sequence of bifurcations in a low-dimensional dynamic map. In this paper, we describe methods for utilizing the deterministic relationship between cycles to extract globalmore »« less
DOI: 10.1115/1.2906176
MODELING CYCLIC VARIABILITY IN SPARK-ASSISTED HCCI

Conference Daw, C Stuart ; Wagner, Robert M ; Edwards, Kevin Dean ; ...

Spark assist appears to offer considerable potential for increasing the speed and load range over which homogeneous charge compression ignition (HCCI) is possible in gasoline engines. Numerous experimental studies of the transition between conventional spark-ignited (SI) propagating-flame combustion and HCCI combustion in gasoline engines with spark assist have demonstrated a high degree of deterministic coupling between successive combustion events. Analysis of this coupling suggests that the transition between SI and HCCI can be described as a sequence of bifurcations in a low-dimensional dynamic map. In this paper we describe methods for utilizing the deterministic relationship between cycles to extract globalmore »« less
Dynamic instabilities in spark-ignited combustion engines with high exhaust gas recirculation

Conference Daw, C Stuart ; FINNEY, Charles E A

We propose a cycle-resolved dynamic model for combustion instabilities in spark-ignition engines operating with high levels of exhaust gas recirculation (EGR). High EGR is important for increasing fuel efficiency and implementing advanced low-emission combustion modes such as homogenous charge compression ignition (HCCI). We account for the complex combustion response to cycle-to-cycle feedback by utilizing a global probability distribution that describes the pre-spark state of in-cylinder fuel mixing. The proposed model does a good job of simulating combustion instabilities observed in both lean-fueling engine experiments and in experiments where nitrogen dilution is used to simulate some of the combustion inhibition ofmore »« less
Hybrid SI-HCCI combustion modes and the potential for control

Conference Edwards, Kevin Dean ; Wagner, Robert M ; Daw, C Stuart ; ...

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 themore »« less

Similar Records