Engine Combustion Chamber Deposits: Fuel Effects and Mechanisms of Formation GM Research Labs. Warren, MI

Format:

Conference/Event

Author/Creator:

Kim, Changsoo, author.

Conference Name:

International Fuels and Lubricants Meeting and Exposition (1991-10-07 : Toronto, Canada)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1991

Summary:

A single cylinder engine was used to collect engine combustion chamber deposits insitu, and to investigate the influence of fuel composition on combustion chamber deposit formation. High-boiling aromatic compounds were found to contribute greatly to deposit formation, while olefinic compounds did not show any significant deposit-forming tendencies. In a low surface temperature regime, deposit formation increased with boiling point of aromatic dopants added to the base fuel. Various analytical techniques (FTIR, GC/MS, EPMA, SEM) were utilized to characterize carbonaceous deposits in an early stage of formation. Oxidized hydrocarbon species (ketones, carboxylic acids, lactones, esters), metal carboxylates, and decomposition products of oil additives were found to be major building blocks of deposits. The oxidized hydrocarbon species formed in a preflame region are condensed/adsorbed on a relatively cold surface to form combustion chamber deposits

Notes:

Vendor supplied data

Publisher Number:

912379

Access Restriction:

Restricted for use by site license