Exhaust gas recirculation valve in vehicle
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United States of America Patent
Stats
-
Oct 9, 2012
Grant Date -
Aug 18, 2011
app pub date -
Feb 16, 2010
filing date -
Feb 16, 2010
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An exhaust gas recirculation valve in a vehicle has two valves that are controlled individually by using one driving source. The exhaust gas recirculation valve enables secure operation of a vehicle even if the driving source is out of order. The exhaust gas recirculation EGR valve includes a driving unit having a driving motor for rotating a motor shaft and an interlocking unit for receiving rotational force from the motor shaft. A rod portion moves upon reception of the rotational force. A valve unit at an end portion of the rod portion controls a flow rate of the exhaust gas. A valve housing is coupled to the driving unit as one unit and has an EGR port and a bypass port. The interlocking unit includes a valve return member for rotating the motor shaft forcibly to make the valve unit to move to an initial position.
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