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:
Sep. 03, 2019
Filed:
Jan. 05, 2018
Ngk Insulators, Ltd., Nagoya-shi, Aichi, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A slope Δin a linear area of sensor output characteristics for a mixed atmosphere of CO and THC and a slope Δin the linear area of the sensor output characteristics for NHare specified in advance at a time when a time thas elapsed since a start of use of an engine. In performing calibration of an NHsensor when a time t(greater than the time t) has elapsed, a slope Δin the linear area of the sensor output characteristics for the mixed atmosphere is specified, a value Δis calculated from an equation Δ=Δ/(Δ/Δ), and the calculated value Δis determined as a new slope in the linear area of the sensor output characteristics for an NHgas.