公开(公告)号：US20170321612A1

公开(公告)日：2017-11-09

申请号：US15523816

申请日：2015-11-16

Applicant: DENSO CORPORATION

Inventor： Yuuta FUJINAKA ,  Takashi KOBAYASHI ,  Kazushi SASAKI

IPC: F02D9/02 ,  F16K1/22 ,  F02M35/10 ,  F02D41/14 ,  F16K31/04 ,  F02D9/04

CPC classification number: F02D9/02 ,  F02D9/04 ,  F02D11/10 ,  F02D41/1493 ,  F02D2009/0213 ,  F02D2011/103 ,  F02D2011/108 ,  F02M35/10393 ,  F16K1/22 ,  F16K31/041

Abstract: An electrically-operated actuator rotates a valve toward its closing side or opening side. A valve urging part urges the valve from a fully-closed position toward the opening side. An ACT control part controls the electrically-operated actuator to drive. A set load of the valve urging part is smaller than a set load that is capable of returning the valve from a fully-closed position to an intermediate position only by urging force of the valve urging part. When a position of the valve at time of turning off an IG switch for stopping operation of an internal-combustion engine is on the closing side of the intermediate position, the ACT control part shifts the valve to the intermediate position by the electrically-operated actuator after the IG switch is turned off.