System and method for diagnosing a variable displacement engine

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United States of America Patent

PATENT NO 10954874
APP PUB NO 20190249618A1
SERIAL NO

15893435

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Abstract

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Systems and methods for determining operation of a cylinder deactivating/reactivating device are disclosed. In one example, a direction of engine rotation is selected to maximize air flow through the engine while the engine is rotated without combusting air and fuel. Operation of one or more cylinder valve deactivating mechanisms is assessed while the engine is rotated without combusting air and fuel.

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Patent Owner(s)

  • FORD GLOBAL TECHNOLOGIES, LLC

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Dudar, Aed M Canton, US 489 3983

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