Feedback air-fuel control system for Stirling engines
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United States of America Patent
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Nov 19, 1991
Grant Date -
N/A
app pub date -
Oct 12, 1990
filing date -
Oct 12, 1990
priority date (Note) -
Expired
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Abstract
A control system for Stirling engines includes a feedback control from a sensor for detecting oxygen levels in the exhaust from the combustion system of the Stirling engine. The sensor generates a feedback signal which is converted for inputting into a microprocessor control system. The input signal is compared with a reference signal to readjust the air-fuel mixture set by control apparatus responsive to at least one engine operating condition such as working fluid temperature. The microprocessor control system generates control signals for both an electronic pressure regulator and a combustion blower so that both as pressure and air flow are adjusted according to engine operating requirements. Either a universal or a lean exhaust gas oxygen sensor is preferably employed in the feedback control.
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