실화가스 흐름에 대한 광역 산소센서의 응답특성 및 이를 이용한 실화감지The Response of a Wide-Range Oxygen Sensor to the Flow of Misfired Gas and Its Application for the Misfire Detection

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To understand the signal fluctuation of a wide-range oxygen sensor installed at the exhaust confluence point, when a misfiring is triggered in a cylinder, the steady state and the transient response characteristics of the sensor to the flow of the misfired gas were investigated quantitatively. It was recognized that the steady state output voltage of the sensor increased higher when it contacted the misfired gas even though the fueling condition was the same as the normal combustion case and this characteristic enabled the application of the wide-range oxygen sensor for the misfire detection. The transient response was compared at different engine speeds and it was found that the response speed increased with the engine speed. The signal fluctuation was also estimated quantitatively, using these steady state and transient response of the sensor, and the estimated signal showed satisfactory correlation with the measurements.
Publisher
한국자동차부품연구원
Issue Date
1999-09
Keywords

광역 산소 센서; 실화 감지; 배기 합류점; 실화가스

Citation

제7회 차세대자동차기술논문집

URI
http://hdl.handle.net/10203/25242
Appears in Collection
ME-Conference Papers(학술회의논문)

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