Patent ID: 7900610
Filing Date: 2011-03-08
Classification: F02B,F02M

Abstract:
1. A switching valve for EGR cooler, the valve being to be provided in the EGR cooler to switch a flow direction of EGR gas with respect to the EGR cooler, the valve comprising: a valve housing molded by a mold and to be fixed to the EGR cooler; an inflow chamber formed in the valve housing so that EGR gas flows therein from an upstream side of the valve housing; a first passage formed in the valve housing to be adjacent to the inflow chamber through a first partition wall and to communicate with inside of the EGR cooler; a first communication hole formed in the first partition wall to provide communication between the inflow chamber and the first passage; an outflow passage through which EGR gas flows out of the valve housing to a downstream side thereof; a second passage formed in the valve housing to communicate with the outflow passage and be adjacent to the inflow chamber through a second partition wall, and communicate with the inside of the EGR cooler; a second communication hole formed in the second partition wall to provide communication between the inflow chamber and the second passage; a third partition wall dividing the first passage from the second passage, the first partition wall, the second partition wall, and the third partition wall being continuous to each other at a joined portion, forming a Y-shaped cross section; and a valve element placed to be swingable about a point near the joined portion between the first partition wall and the second partition wall, the valve element being swung to selectively close the first communication hole and the second communication hole, and the first partition wall and the second partition wall being slanted with respect to a mold-removing direction of a mold that forms the inflow chamber, and the third partition wall being almost parallel to a mold-removing direction of another mold that forms the first passage and the second passage.