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K. Steinschütz, M. Urbanek, M. Jech, C. Lenauer:
"Characteristics Of Ethanol As A Blend And The Impact Of Combustion Products On Wear Of Piston Ring In A Modern Passenger Car";
Talk: 3rd European Conference on Tribology, Wien (invited); 2011-06-07 - 2011-06-09.

Recently the use of biogenic renewable fuels as a blend for conventional fuels in different mixing ratios has become more common. In case of a spark ignition engine (SI), conventional gasoline canbe blended with ethanol. The characteristics of ethanol possess some advantages, such as the reduction of greenhouse gas emissions, a higher octane number which reduces the knocking
tendency, and a higher vaporisation heat that enables a better cylinder charging [1]. Despite the named advantages a few drawbacks due to the appearance of combustion products of ethanol (e.g.
acetaldehyde, acetic acid) can be expected, especially in respect to the aging of engine oil.

wear, piston ring, radio-active isotopes, ethanol, biofuel, passenger car