Method for diagnosing a vacuum actuator

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United States of America Patent

PATENT NO 9797329
SERIAL NO

14535775

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Abstract

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Methods and systems are described for diagnosing degradation of a vacuum actuator in an engine system. An example method comprises indicating degradation of the vacuum actuator based on an estimate of flow of air into and out of a vacuum reservoir. The estimate is further based on flow of air generated via each of an aspirator in the intake system, an actuation of the vacuum actuator, and leakage during the actuation of the vacuum actuator.

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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fournelle, Gilbert Ypsilanti, US 5 44
Martin, Douglas Raymond Canton, US 208 2412

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