Importance

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Abstract

A rotary valve device includes a valve body having a valve hole and a plurality of ports connected to the valve hole. The rotary valve device further includes a rotary valve having communication passages and a motor driving to rotate the rotary valve to regulate flow of a fluid. The valve body has a first and a second supply passage that interconnect the valve hole and the ports. The second supply passage is connected to the valve hole at a position that is closer to an axial end of the valve hole than the first supply passage. The fluid supplied from the second supply passage has lower pressure than the fluid supplied from the first supply passage. Sealing members are interposed between an inner peripheral surface of the valve hole and an outer peripheral surface of the rotary valve at respective opposite ends of the valve hole.

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First Claim