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:
Jan. 10, 2017
Filed:
Mar. 06, 2014
Denso Corporation, Kariya, Aichi-pref., JP;
Fuminori Suzuki, Okazaki, JP;
Yuuta Mizuno, Anjo, JP;
DENSO CORPORATION, Kariya, JP;
Abstract
A current control device sets a target current value of a solenoid, and sets a duty ratio of a PWM signal outputted to a drive circuit of a solenoid based on the target current value. The target current value is a value that periodically varies in a dither period longer than a PWM period of the PWM signal. A setting period of the target current value and a setting period of the duty ratio are shorter than the dither period. As compared with a configuration where the duty ratio is set in the dither period, a time period from a time a basic current value is changed to a time the duty ratio is renewed is shortened. A operation responsiveness of a movable core of the solenoid improves.