The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 11, 2022
Filed:
Dec. 10, 2019
Keihin Corporation, Tokyo, JP;
Panasonic Intellectual Property Management Co., Ltd., Osaka, JP;
Atsushi Ogawa, Shioya-gun, JP;
Motoaki Kato, Shioya-gun, JP;
Kengo Nomura, Shioya-gun, JP;
Keisuke Kuroda, Osaka, JP;
Takashi Ryu, Kyoto, JP;
HITACHI ASTEMO, LTD., Hitachinaka, JP;
PANASONIC SEMICONDUCTOR SOLUTIONS CO., LTD., Nagaokakyo, JP;
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.