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专利名称：EGR device
发明人：遠藤 圭悟,浅井 崇,浦山 朋之申请号：JP2019054777申请日：20190322公开号：JP2020153343A公开日：20200924
专利附图：
摘要：PROBLEM TO BE SOLVED: To provide an EGR device in which driving of an EGRvalve is speeded up while preventing stepping-out of a stepping motor. SOLUTION: AnEGR valve 63 provided in an EGR flow path 61 for transporting exhaust gas from anexhaust flow path 51 of an engine 1 to an intake flow path 46, a stepping motor 0 for
opening and closing the EGR valve, and a stepping motor for driving. The EGR device 60including the motor drive unit 100 for supplying power and the return spring 636 forurging the EGR valve in the valve closing direction, the speed detection unit 11 fordetecting the output shaft rotation speed of the engine, and the opening degree of theEGR valve. The motor drive unit is configured to change the drive frequency fd of thestepping motor according to changes in the output shaft rotation speed and the openingdegree. [Selection diagram] Fig. 3
申请人：株式会社ＳＵＢＡＲＵ
地址：東京都渋谷区恵比寿一丁目２０番８号
国籍：JP
代理人：稲田 弘明,渡部 温
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