Abstract
PROF. NASH and Mr. Howes emphasise the fact that whereas their figures for trimethylethylene and diamylene were quoted for twenty per cent volume concentration, our own were for twenty per cent weight concentration. From curves obtained for these hydrocarbons, reproduced in Fig. 1, it is clear that over the range examined the relationship between weight-concentration and increase in H.U.C.R. is linear. Knowing the specific gravities, it is a matter of simple calculation to show that the discrepancy cannot be due to our use of what we regard as the only rational procedure. The specific gravity of the standard fuel was 0.725 at 60° F.
Similar content being viewed by others
Article PDF
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
BIRCH, S., STANSFIELD, R. Anti-Knock Ratings of Pure Hydrocarbons. Nature 123, 639 (1929). https://doi.org/10.1038/123639a0
Issue Date:
DOI: https://doi.org/10.1038/123639a0
Comments
By submitting a comment you agree to abide by our Terms and Community Guidelines. If you find something abusive or that does not comply with our terms or guidelines please flag it as inappropriate.