Some New Aspects of Deposit Effects on Engine Octane Requirement Increase and Fuel Economy

Format:

Conference/Event

Author/Creator:

Graiff, L. B., author.

Conference Name:

1979 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1979-10-02 : Houston, Texas, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1979

Summary:

Historically, the increase in octane requirement (OR) of a car engine with mileage was thought to be caused almost entirely by combustion chamber deposits. Tests with recent model V-8 engines, using a special technique for octane rating the individual cylinders of the engines, showed that certain intake-port-area deposits can have as great an effect on OR as combustion chamber deposits. Fuel consumption tests with these same engines showed that combustion chamber, intake valve, and particularly intake port deposits have a beneficial effect on fuel economy; that is, physically removing these deposits from the engines increased fuel consumption by up to 9%. The probable causes and implications of these findings are discussed

Notes:

Vendor supplied data

Publisher Number:

790938

Access Restriction:

Restricted for use by site license