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Title: The Effect of Diluent Gases In The Shock Tube and Rapid Compression Machine

Abstract

Studying the details of hydrocarbon chemistry in an internal combustion engine is not straightforward. A number of factors, including varying conditions of temperature and pressure, complex fluid motions, as well as variation in the composition of gasoline, render a meaningful characterization of the combusting system difficult. Some simplified experimental laboratory devices offer an alternative to complex engine environments: they remove some of the complexities that exist in real engines but retain the ability to work under engine-relevant conditions. The choice of simplified experimental devices is limited by the range of temperature and pressure at which they can operate; only the shock tube and rapid compression machine (RCM) can reach engine-relevant temperatures and pressures quickly enough and yet withstand the high pressures that occur after the ignition event. Both devices, however, suffer a common drawback: the use of inert diluent gases has been shown to affect the measured ignition delay time under some experimental conditions. Interestingly, this effect appears to be opposite in the shock tube and RCM: in the comparative study of the carrier gases argon and nitrogen, argon decreases the ignition delay time in the shock tube, but increases it in the RCM. This observation is investigated in moremore » detail in this study.« less

Authors:
; ; ; ;
Publication Date:
Research Org.:
Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
Sponsoring Org.:
USDOE
OSTI Identifier:
908115
Report Number(s):
UCRL-CONF-228018
TRN: US200722%%440
DOE Contract Number:
W-7405-ENG-48
Resource Type:
Conference
Resource Relation:
Conference: Presented at: 5th U.S. National Combustion Meeting, San Diego, CA, United States, Mar 25 - Mar 28, 2007
Country of Publication:
United States
Language:
English
Subject:
29 ENERGY PLANNING, POLICY AND ECONOMY; ARGON; CHEMISTRY; COMBUSTION; COMPRESSION; ENGINES; GASES; GASOLINE; HYDROCARBONS; IGNITION; INTERNAL COMBUSTION ENGINES; NITROGEN; SHOCK TUBES; SOLVENTS

Citation Formats

Silke, E, W?rmel, J, O?Conaire, M, Simmie, J, and Curran, H. The Effect of Diluent Gases In The Shock Tube and Rapid Compression Machine. United States: N. p., 2007. Web.
Silke, E, W?rmel, J, O?Conaire, M, Simmie, J, & Curran, H. The Effect of Diluent Gases In The Shock Tube and Rapid Compression Machine. United States.
Silke, E, W?rmel, J, O?Conaire, M, Simmie, J, and Curran, H. Fri . "The Effect of Diluent Gases In The Shock Tube and Rapid Compression Machine". United States. doi:. https://www.osti.gov/servlets/purl/908115.
@article{osti_908115,
title = {The Effect of Diluent Gases In The Shock Tube and Rapid Compression Machine},
author = {Silke, E and W?rmel, J and O?Conaire, M and Simmie, J and Curran, H},
abstractNote = {Studying the details of hydrocarbon chemistry in an internal combustion engine is not straightforward. A number of factors, including varying conditions of temperature and pressure, complex fluid motions, as well as variation in the composition of gasoline, render a meaningful characterization of the combusting system difficult. Some simplified experimental laboratory devices offer an alternative to complex engine environments: they remove some of the complexities that exist in real engines but retain the ability to work under engine-relevant conditions. The choice of simplified experimental devices is limited by the range of temperature and pressure at which they can operate; only the shock tube and rapid compression machine (RCM) can reach engine-relevant temperatures and pressures quickly enough and yet withstand the high pressures that occur after the ignition event. Both devices, however, suffer a common drawback: the use of inert diluent gases has been shown to affect the measured ignition delay time under some experimental conditions. Interestingly, this effect appears to be opposite in the shock tube and RCM: in the comparative study of the carrier gases argon and nitrogen, argon decreases the ignition delay time in the shock tube, but increases it in the RCM. This observation is investigated in more detail in this study.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Feb 09 00:00:00 EST 2007},
month = {Fri Feb 09 00:00:00 EST 2007}
}

Conference:
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