Mechanical Octanes for Higher Efficiency

560010

01/01/1956

Event
Pre-1964 SAE Technical Papers
Authors Abstract
Content
HIGHER compression ratios, the main key to better passenger-car engine efficiency, can be increased by two main factors: chemical and mechanical octane numbers. Although remarkable gains have been made in the former in recent years, the limits in improvements have about been reached. Thus the current emphasis on means of improving mechanical octane numbers.
The authors tell here of important experiments and developments in ignition control, valve timing, carburetion, engine-transmission relationship, and combusion-chamber design—the five factors most important in achieving mechanical octane numbers.
Presented also are 25-year charts of trends in passenger-car weight, length, horsepower, engine speed/car speed, compression ratio, acceleration time, fuel economy, and efficiency.
Meta TagsDetails
DOI
https://doi.org/10.4271/560010
Pages
25
Citation
Caris, D., Mitchell, B., McDuffie, A., and Wyczalek, F., "Mechanical Octanes for Higher Efficiency," SAE Technical Paper 560010, 1956, https://doi.org/10.4271/560010.
Additional Details
Publisher
Published
Jan 1, 1956
Product Code
560010
Content Type
Technical Paper
Language
English