Study on Combustion Chamber Deposit Formation Mechanism -Influence of Fuel Components and Gasoline Detergents-
Study on Combustion Chamber Deposit Formation Mechanism -Influence of Fuel Components and Gasoline Detergents-
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The combustion chamber deposit (CCD) forming tendency of gasoline components and detergents were investigated with laboratory tests ad engine dynamometer tests. In the dynamometer tests, the driving conditions under which fuels and detergents influence CCD formation were specified, and the effects of different gasoline components and detergent blends on CCD formation were examined. In the laboratory tests, the CCD forming process was investigated thoroughly [10].The CCD forming tendency of aromatic compounds in gasoline were dependent not only on physical properties such as molecular weight, but also chemical structure (number or position of the alkyl substituents of aromatic molecules). As for oxygenates, engine dynamometer tests with MTBE blended gasoline yielded less CCD than the test without MTBE. The CCD forming tendency of detergents correlated with the thermal decompositon tendency of the detergent package and the concentration of the main agents.The influence of engine oil is also discussed by quotation of the latest studies.
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Study on Combustion Chamber Deposit Formation Mechanism -Influence of Fuel Components and Gasoline Detergents-
Sae Technical Papers
International Spring Fuels & Lubricants Meeting & Exposition ; 1997
1997-05-01
Conference paper
English
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