Effects of natural gas composition on ignition delay under diesel conditions [electronic resource].
- Arlington, Va. : National Science Foundation (U.S.), 1993. and Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
- Physical Description:
- 20 pages : digital, PDF file
- Additional Creators:
- Lawrence Livermore National Laboratory, National Science Foundation (U.S.), and United States. Department of Energy. Office of Scientific and Technical Information
- Restrictions on Access:
- Free-to-read Unrestricted online access
- Effects of variations in natural gas composition on autoignition of natural gas under direct-injection (DI) diesel engine conditions were studied experimentally in a constant-volume combustion vessel and computationally using a chemical kinetic model. Four fuel blends were investigated: pure methane, a capacity weighted mean natural gas, a high ethane content natural gas, and a natural gas with added propane typical of peak shaving conditions. Experimentally measured ignition delays were longest for pure methane and became progressively shorter as ethane and propane concentrations increased. At conditions characteristic of a DI compression ignition natural gas engine at Top Dead Center (CR=23:1, p = 6.8 MPa, T = 1150K), measured ignition delays for the four fuels varied from 1.8 ms for the peak shaving and high ethane gases to 2.7 ms for pure methane. Numerically predicted variations in ignition delay as a function of natural gas composition agreed with these measurements.
- Published through SciTech Connect., 12/03/1993., "ucrl-jc--115804", " sand--94-8635c", " conf-940711--5", "DE94006405", ": Grant CTC 9209747 Contract 5091-260-2271 5086-260-1458", 25. international symposium on combustion,Irvine, CA (United States),31 Jul - 5 Aug 1994., and Siebers, D.L.; Westbrook, C.K.; Naber, J.D.; Di Julio, S.S.
- Funding Information:
- W-7405-ENG-48 and AC04-76DP00789
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