Effect of Gasoline Octane Quality and Hydrocarbon Composition on Afterrun 790939

A survey of recent-model cars was made to evaluate their tendency to afterrun (continued running of the engine after the ignition is turned off) and to see what devices were used to control afterrun. The effects of idle operating conditions on afterrun were studied with two of the cars. Thirteen of the cars were used to evaluate the effects of gasoline octane quality and hydrocarbon composition on afterrun. The results of the studies give a good overall picture of how afterrun is affected by idle settings, octane quality, and fuel composition.


Subscribers can view annotate, and download all of SAE's content. Learn More »


Members save up to 40% off list price.
Login to see discount.
Special Offer: With TechSelect, you decide what SAE Technical Papers you need, when you need them, and how much you want to pay.