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Performance of Thick Film NOx Sensor on Diesel and Gasoline Engines
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English
Abstract
This paper describes a thick film ZrO2 NOx sensor feasible for diesel and gasoline engine applications, and introduces modification items from the previous concept design.(1)
The modification items comprise simplifying the sensing element design to reduce output terminals for package design and applying temperature control to the sensing element in order to minimize sensor performance dependency on gas temperature.
The NOx sensor indicates a stable linear signal in proportion to NOx concentration in a wide range of temperature, A/F and NOx concentration as a practical condition on both gasoline and diesel engines. The NOx sensor shows a good response in hundred msec. and a sharp signal following NOx generation in a transient state as well.
Besides, another type of a NOx sensor is proposed for low NOx measurement in a practical use, by an electromotive force(EMF) voltage instead of a pumping current.
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Authors
Citation
Kato, N., Hamada, Y., and Kurachi, H., "Performance of Thick Film NOx Sensor on Diesel and Gasoline Engines," SAE Technical Paper 970858, 1997, https://doi.org/10.4271/970858.Also In
References
- Kato N. Nakagaki K. Ina N. “Thick film ZrO2 NOx sensor” SAE paper # 960334 1996
- Miyoshi N. Takahashi N. Kasahara K. et.al. “Development of new concept three-way catalyst for automotive lean-burn engines” SAE paper # 950809 1995
- Takami A. Takemoto T. Iwakuni H. et.al. “Development of lean burn catalyst” SAE paper # 950746 1995
- Smedler G. VValker A. Winterborn D. et.al. “High performance diesel catalysts for Europe beyond 1996” SAE paper # 950750 1995
- Brogan M.S. Boegner W. et.al. “Evaluation of NOx storage catalysts as an effective system for NOx removal from the exhaust gas of leanburn gasoline engines” SAE paper # 952490 1995