Ion sensing arrangement for small gasoline engine

Details Ion sensing arrangement for small gasoline engine Ion sensing arrangement for small gasoline engine

2006-10-30

2008-12-02

Chapman, John E (Department: 2856)

Measuring and testing

Engine detonation

Specific type of detonation sensor

Reexamination Certificate

active

07458250

ABSTRACT:
An ion sensing arrangement for a small internal combustion engine includes an ion sensor placed in the engine's combustion chamber to measure the conductivity of the combusted fuel-air mixture. Scaling circuitry, such as variable voltage divider circuitry, is connected to be in electrical communication with an output of the ion sensor. The scaling circuitry operates to adjust the output signal to a value appropriate for measurement. Preferably, the scaling circuitry adjusts the output signal based on a comparison with a reference value.

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