Publication Date:
2019-07-13
Description:
A method independent of physical modeling assumptions is presented to analyze high speed flame photography and cylinder pressure measurements from a transparent piston spark ignition research engine. The method involves defining characteristic quantities of the phenomena of flame propagation and combustion, and estimating their values from the experimental information. Using only the pressure information, the mass fraction curves are examined. An empirical burning law is presented which simulates such curves. Statistical data for the characteristics delay and burning angles which show that cycle to cycle fractional variations are of the same order of magnitude for both angles are discussed. The enflamed and burnt mass fractions are compared as are the rates of entrainment and burning.
Keywords:
INORGANIC AND PHYSICAL CHEMISTRY
Type:
NASA-CR-162859
,
WSS-80-20
,
Spring 1980 Meeting of the Western States Section; Apr 21, 1980 - Apr 22, 1980; Irvine, CA; United States
Format:
application/pdf
Permalink
