“LABORATORY OCTANE RATINGS WHAT DO THEY MEAN?”

570099

01/01/1957

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
The results of several anti-knock studies are discussed in this paper. Road anti-knock performance for 1000 fuel blends covering the years 1940 to 1957 have been investigated. The laboratory Research octane numbers of these fuels covered the range from 80 to 105. The fuels were evaluated in 46 cars representing a cross-section of the automotive products for these years. The objective of these investigations was to determine the practical application of the laboratory to road octane rating relationships, and the effect of vehicles, and operating conditions on these relationships.
The results show that there is a valid correlation between laboratory and road octane ratings. The relative importance of Research and Motor octane ratings on road performance is influenced by make of car, engine speed, throttle position, and distributor advance characteristics. It also indicated that aromatics improve, whereas olefins reduce high speed Modified Borderline ratings.
The correlation equations developed are valuable in predicting road performance from laboratory octane ratings. They could be very helpful to the automotive industry in tailoring engines to match available fuels.
Meta TagsDetails
DOI
https://doi.org/10.4271/570099
Pages
16
Citation
Fell, R., and Hostetler, H., "“LABORATORY OCTANE RATINGS WHAT DO THEY MEAN?”," SAE Technical Paper 570099, 1957, https://doi.org/10.4271/570099.
Additional Details
Publisher
Published
Jan 1, 1957
Product Code
570099
Content Type
Technical Paper
Language
English