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Study of Combustion Chamber Deposit Formation Mechanism - Part 1: Characterization of Deposits
Published October 22, 1996 by Society of Automotive Engineers of Japan in Japan
Event: Autumn Conference
Combustion chamber deposits were characterized by physical and chemical analyses, and their formation mechanism was discussed. The two types of deposits, derived from fuel and engine oil, could be distinguished from each other through the analyses of the deposits in an early stage of their formation. Fuel derived deposits were assumed from their chemical structures to be oxidation and polymerization products of aromatic fuel components in a quench area, and the validity of this assumption was verified by laboratory tests under high pressure condition.