Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Date of Patent
February 15, 2011
Patent Application Number
12068822
Date Filed
February 12, 2008
Patent Primary Examiner
Patent abstract
When an actuation mechanism fails to operate and thus fails to control a turning of a control shaft of a valve lift varying mechanism, a moving member is enforcedly moved to an intermediate stable position by a biasing force that is produced by combining a first type force that biases the control shaft in a direction to increase a valve lift degree of an engine valve and a second type force that biases the control shaft in a direction to reduce the valve lift degree of the engine valve. The intermediate stable position of the moving member assures an easy engine starting even in a cold engine condition.
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