10411 排気管直挿型NOxセンサによるガソリン車用三元触媒の劣化診断法(計測・診断)

元データ 2005-03-17 社団法人日本機械学会

概要

The object of this study is to investigate an on-board diagnostic method to detect the deterioration of a three-way catalyst under actual driving conditions. For this purpose, we analyzed the signal data, which consists of air-fuel ratio and NOx concentration, generated by two ZrO2 NOx sensors placed on upstream and downstream positions of the catalytic converter. As a result, we found that it is possible to detect deteriorated catalyst under actual driving conditions by using effectively airfuel ratio signals and NOx concentration signals of two NOx sensors placed on upstream and downstream positions of the catalytic converter.

著者

野田 明 (独)交通安全環境研究所
野田 明 独立行政法人交通安全環境研究所
山本 敏朗 独立行政法人交通安全環境研究所
米川 誠 独立行政法人交通安全環境研究所

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