Method of discriminating octane number of fuel for motor vehicle

Internal-combustion engines – Combustion chamber means combined with air-fuel mixture...

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123422, 123435, 123492, 73 35, G01N 3322, F02D 4300

Patent

active

046402519

ABSTRACT:
A knocking in an engine is prevented from occurring by retarding an ignition timing. A basic ignition advance angle THB and a correction value THK for retardation of the ignition timing are computed in order that the ignition timing THF is calculated by using the following formula.

REFERENCES:
patent: 4513716 (1985-04-01), Haraguchi et al.

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