Effect of Inlet Air Temperature on Auto-Ignition of Fuels with Different Cetane Number and Volatility

reportActive / Technical Report | Accession Number: ADA557021 | Open PDF

Abstract:

This paper investigates the effect of air inlet temperature on the auto-ignition of fuels that have different CN and volatility in a single cylinder diesel engine. The inlet air temperature is varied over a range of 30C to 110C. The fuels used are ultra-low-sulfur-diesel ULSD, JP-8 two blends with CN 44.1 31 and F-T SPK. Detailed analysis is made of the rate of heat release during the ignition delay period, to determine the effect of fuel volatility and CN on the auto-ignition process. A STAR-CD CFD model is applied to simulate the spray behavior and gain more insight into the processes that immediately follow the fuel injection including evaporation, start of exothermic reactions and the early stages of combustion. The mole fractions of different species are determined during the ignition delay period and their contribution in the auto-ignition process is examined. Arrhenius plots are developed to calculate the global activation energy for the auto-ignition reactions of these fuels. Correlations are developed for the ID and the mean air temperature and pressure.

Author(s):
Jayakumar, Chandrasekharan ; Zheng, Ziliang ; Joshi, Umashankar M. ; Bryzik, Walter ; Henein, Naeim A. ; Sattler, Eric
Author Organization(s):
WAYNE STATE UNIV DETROIT MI
Descriptive Note:
Conference paper
Supplementary Note:
Presented at the ASME 2011 Internal Combustion Engine Division Fall Technical Conference, ICEF2011, Morgan Town, WV on 2-5 Oct 2011 and published in proceedings of the same as ICEF2011-60141. Prepared in collaboration with US Army Tank Automotive Research Development and Engineering Center Detroit, MI.
Pagination:
0013

Security Markings

DOCUMENT & CONTEXTUAL SUMMARY

Distribution:
Approved For Public Release
Distribution Statement:
Approved For Public Release; Distribution Is Unlimited.

RECORD

Collection: TR
Identifying Numbers
Report Number(s):
TARDEC-22033
Monitor Series:
TARDEC
 Subject Terms
Joint Capability Areas:
JCA_1.2_Force Preparation; JCA_1_Force Support; JCA_1.2.3_Educating; JCA_8_Building Partnerships; JCA_6_Net Centric; JCA_5_Command and Control; JCA_8.2_Shape; JCA_5.3_Planning
Communities of Interest:
Energy and Power Technologies
Descriptor(s):
*AUTOIGNITION, *CETANE NUMBER, *DIESEL ENGINES, INLETS, SYMPOSIA, SYNTHETIC FUELS, VOLATILITY
Field(s)/Group(s):
Combustion and Ignition, Fuels, Reciprocating and Rotating Engines
Keyword(s):
INLET AIR TEMPERATURE, ALTERNATE FUELS
Report Date:
2011 Oct 01
Creation Date:
2012 Apr 11