Valve and cylinder head cover for crankcase ventilation of an internal combustion engine
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United States of America Patent
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-
Mar 8, 2011
Grant Date -
Oct 23, 2008
app pub date -
Mar 31, 2008
filing date -
Apr 18, 2007
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A valve for crankcase ventilation of an internal combustion engine comprises a fresh-air side for connection with an intake section of the internal combustion engine, an engine side for connection with the crankcase and a valve insert movable as a whole for changing the flow resistance through the valve. Said valve inset is held inside said valve without pre-load. Said valve insert is designed to be freely displaced to a deventilation limit-stop position under negative pressure on the fresh-air side relative to the engine side, and to be freely displaced to a ventilation limit-stop position under excess pressure on the fresh-air side relative to the engine side. The valve insert is designed to open a deventilation cross-section in the deventilation limit-stop position and to open a deventilation cross-section that is different from the ventilation cross-section in the ventilation limit-stop position.
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