Title:
ガス濃度検出装置の補正係数設定方法およびガス濃度検出装置ならびにガスセンサ
Document Type and Number:
Japanese Patent JP5587919
Kind Code:
B2
Abstract:
A method of setting a correction coefficient for correcting an oxygen concentration detected by a gas concentration detection apparatus, the method including the steps of obtaining a current value of current flowing in an oxygen pump cell of a gas sensor by exposing the gas sensor device to each of at least three or more sample gases of different known oxygen concentrations; calculating, after a corrected oxygen concentration is calculated using the current value and a correction value, a correction coefficient approximating a linear relationship between any one corrected oxygen concentration serving as a reference and two other corrected oxygen concentrations. Also disclosed is a gas concentration detection apparatus including a gas sensor device, a calculation means and a memory means for storing the correction coefficient obtained in accordance with the method.
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Inventors:
Hisashi Sasaki
Application Number:
JP2012006754A
Publication Date:
September 10, 2014
Filing Date:
January 17, 2012
Export Citation:
Assignee:
NGK Spark Plug Co., Ltd.
International Classes:
G01N27/26; G01N27/416; G01N27/419
Attorney, Agent or Firm:
Yamamoto In addition