Device to deoil the crankcase ventilation gases of an internal combustion engine
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United States of America Patent
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Jan 14, 2003
Issued Date -
N/A
app pub date -
Jan 29, 2002
filing date -
May 30, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A device to deoil crankcase ventilation gases of an internal combustion engine with at least one oil mist separator is provided which has a gas inlet connected to a first pressure area and is directly or indirectly connected to the crankcase of the engine. The separator also has a gas outlet connected to a second pressure area and is directly or indirectly connected to the air intake section of the engine and an oil outlet connected to the oil sump of the engine. The separator further has a bypass channel, which has a gas inlet connected to the first pressure area and a gas outlet connected to the second pressure area as well as at least one device which, depending on the pressure difference between the two pressure areas, opens or closes the bypass channel continuous or gradually to allow the crankcase ventilation gases to flow through. When the bypass channel is open, a partial volumetric flow of the crankcase ventilation gas flows past the oil mist separator through the bypass channel into the second pressure area, wherein the bypass channel and the device to open and close the bypass channel are designed so that, when the bypass channel is opened, deoiling is brought about by flow diversion or impact separation in the bypass channel.
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