760196: More Data on ORI Variables - Technical Paper

Event: 1976 Automotive Engineering Congress and Exposition

Authors

Engineering and Research Staff, Ford Motor Co.

Engineering and Research Staff, Ford Motor Co.

Engineering and Research Staff, Ford Motor Co.

Abstract

Content: The effects of selected fuel additives, engine operating conditions, and driving modes on ORI have been investigated for the 1975 Ford 400 CID engine. A twenty-seven vehicle program was designed with three vehicles per variable. Reduced coolant temperatures significantly lowered ORI. Methanol appears to reduce ORI. Variables which do not produce strong trends are increased air-fuel ratio, a driving cycle with wide open throttle accelerations, a fuel with a carrier oil additive, and heavier fuels.

An inverse relationship between initial octane requirements and ORI was observed.

Meta Tags

Topics: Air / fuel ratio
Vehicle acceleration
Octane
Fuel additives
Throttles
Methanol
Coolants

Affiliated or Co-Author: Engineering and Research Staff, Ford Motor Co.

Details

DOI: https://doi.org/10.4271/760196

Pages: 8

Citation: Saillant, R., Pedrys, F., and Kidder, H., "More Data on ORI Variables," SAE Technical Paper 760196, 1976, https://doi.org/10.4271/760196.

Additional Details

Publisher: SAE International

Published: Feb 1, 1976

Product Code: 760196

Content Type: Technical Paper

Language: English