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. 16, 2018
Filed:
Aug. 24, 2016
Ngk Insulators, Ltd., Nagoya-shi, Aichi, JP;
NGK INSULATORS, LTD., Nagoya, JP;
Abstract
Provided is a method for recovering output of a gas sensor in shorter time. The method includes: determining a recovering temperature Tand a recovering time Δτbased on a condition setting range where a high recovery rate is expected; and recovering the output based on Tand Δτ, wherein in the recovering, a duty ratio for a heater is instantly increased to value Dhigher than a value in a normal driving mode when the recovering starts, Dis maintained up to T, and PID control is performed by reducing the duty ratio to value Dto maintain T. After an elapse of Δτ, the duty ratio is reduced to value D. When the temperature of the element reaches a value 1 to 1.2 times as high as the temperature in the normal drive mode, the duty ratio is instantly changed to value Din the normal drive mode.