Octane number measuring system

Details Octane number measuring system Octane number measuring system

1980-05-08

1982-05-25

Gill, James J.

Measuring and testing

Engine detonation

Combustion signal compared to reference signal varied by a...

G01N 3322

Patent

active

043310249

ABSTRACT:
First and second reference fuels having different known octane numbers and a test fuel having an unknown octane number are each provided individually through a pump to the fuel inlet of an engine at the substantially constant mass flow rate which results in substantially maximum knocking conditions for each of the fuels. The octane number of the test fuel is determined based on measurements of the rate of change of the cylinder pressure in the engine when the first and second reference fuels and the test fuel are flowing to the engine.

REFERENCES:
patent: 2936609 (1960-05-01), Pope et al.
patent: 3183708 (1965-05-01), Roddick
patent: 3318136 (1967-05-01), Payne et al.
patent: 3469954 (1969-09-01), Hoffman et al.
patent: 3503722 (1970-03-01), Weber et al.
patent: 3969922 (1976-07-01), Baker et al.
patent: 4010358 (1977-03-01), Morris
"Mercedes-Benz 280E", Car and Driver Magazine, pp. 62-68, 3/77.

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