Knock Perception- A 1975 Customer/ Rater Study by CRC 780321
Octane requirements of late model vehicles were determined by trained knock raters and compared with those determined by customers.
Average differences of independent distributions of customer and rater requirements were about 3 Research Octane Numbers/2 Motor Octane Numbers at part-throttle and 6 RON/4 MON at full-throttle and maximum octane requirement conditions.
Five percent of the customers objected to knock when their cars were operated on fuel matching rater requirements, while 50 percent objected when using fuel 6 RON/4 MON lower.
Another program is planned because differences between rater and customer octane requirements were greater than expected.
Citation: Bettoney, W., Rogers, J., Benson, J., Keller, B. et al., "Knock Perception- A 1975 Customer/ Rater Study by CRC," SAE Technical Paper 780321, 1978, https://doi.org/10.4271/780321. Download Citation
Author(s):
Wilfred E. Bettoney, John D. Rogers, Jack D. Benson, Billy D. Keller, Gerald W. Stanke
Affiliated:
E. I. du Pont de Nemours and Co.
Pages: 16
Event:
1978 Automotive Engineering Congress and Exposition
ISSN:
0148-7191
e-ISSN:
2688-3627
Also in:
SAE 1978 Transactions-V87-A
Related Topics:
Knock
Research and development
Logistics
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