公开(公告)号：US11466650B2

公开(公告)日：2022-10-11

申请号：US16708821

申请日：2019-12-10

Applicant: KEIHIN CORPORATION ,  Panasonic Intellectual Property Management Co., Ltd.

Inventor： Atsushi Ogawa ,  Motoaki Kato ,  Kengo Nomura ,  Keisuke Kuroda ,  Takashi Ryu

IPC: F02M51/00 ,  F02D41/30 ,  B05B1/30

Abstract: This fuel includes: a first switching element disposed between a booster circuit boosting a battery power and one end of a solenoid; a second switching element disposed between a battery and one end of the solenoid; a third switching element disposed between the other end of the solenoid and a ground; a fourth switching element disposed between one end of the solenoid and a ground; and a control unit configured to control open/closed states of the first switching element, the second switching element, the third switching element, and the fourth switching element. The control unit is configured to open the fourth switching element during a valve closing detection period of detecting closing of a fuel injection valve and to detect the closing of the fuel injection valve on the basis of a change in voltage of the other end of the solenoid.

公开(公告)号：US10284091B2

公开(公告)日：2019-05-07

申请号：US15677913

申请日：2017-08-15

Applicant: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.

Inventor： Keisuke Kuroda ,  Takashi Ryu

IPC: H02M3/158 ,  H02M1/08 ,  H02M1/00

Abstract: A controller controls a bi-directional converter which includes: a first input/output terminal and a second input/output terminal for receiving and outputting a voltage stepped up by a step-up operation and a voltage stepped down by a step-down operation; a first switching element; a second switching element; and an inductor. The controller includes: a first driver which controls the first switching element via a first resistance circuit; a second driver which controls the second switching element via a second resistance circuit; and an operation mode setter which selects one of the step-up operation and the step-down operation, wherein at least one of the first resistance circuit and the second resistance circuit is a variable resistance circuit which has a resistance value that varies for the step-up operation and the step-down operation, in accordance with selection made by the operation mode setter.