Preignition with High Olefin Fuels in a 2-Stroke SI Engine

Paper #:
  • 932395

Published:
  • 1993-09-01
Citation:
Mendiratta, R. and Pundir, B., "Preignition with High Olefin Fuels in a 2-Stroke SI Engine," SAE Technical Paper 932395, 1993, https://doi.org/10.4271/932395.
Pages:
13
Abstract:
Hydrocarbon composition of fuel affects the deposit composition, its capacity to heat up the hot spots, and propensity of the fuel to preignition. Presently, fluidized catalytically cracked streams forms a large fraction of total gasoline pool in India and gasolines contain up to 50% olefins. About 60% of total gasoline in the country is consumed by the two wheeled vehicles powered mostly by 2-stroke engines. Preignition tendency of fuels with varying content of olefinic hydrocarbons was studied on a 2-stroke engine, during a 50 hour test. Preignition was indicated by sudden increase in combustion chamber surface temperature. Results showed a marked increase in preignition as the olefin content of gasoline increased above 20% by volume.
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