Vehicle Octane Number Requirement versus Altitude - Another Look Petro-Canada Products CompanyResearch and Development

Format:

Conference/Event

Author/Creator:

Steckle, William M., author.

Conference Name:

1989 SAE International Fall Fuels and Lubricants Meeting and Exhibition (1989-09-25 : Baltimore, Maryland, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1989

Summary:

Historically, vehicle octane requirements decrease with increasing altitude due to the effect of changing barometric pressure on induction and ignition management system function. Recent advances in engine technology designed to reduce emissions and improve fuel economy of vehicles at high altitudes could result in minimal octane requirement change with changing altitude. In order to confirm the effect of these technology changes, Petro-Canada determined the octane requirements of twenty 1987-88 model cars and light trucks at high and low altitude locations. Seventeen of these were equipped with altitude compensation sensors. Contrary to previously published data, we found that the octane requirements of the 17 compensated vehicles were reduced, on average, by 0.5 (R+M)/2 per 1000 ft, increase in altitude. Although we expect that octane demand in high altitude areas will rise as the penetration of these vehicles progresses, the magnitude of the increase is not as great as previously estimated

Notes:

Vendor supplied data

Publisher Number:

892035

Access Restriction:

Restricted for use by site license