کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
9700947 | 1462132 | 2005 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Planar non-nernstian electrochemical sensors: field test in the exhaust of a spark ignition engine
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی آنالیزی یا شیمی تجزیه
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
Field measurements of NOx, HCs and CO concentrations on an engine test bench were performed on YSZ-based planar sensors. Sensors with two parallel Pt finger electrodes, one coated with WO3 thick film as sensing electrode, were fabricated. The planar sensor was positioned close to a commercial λ sensor, downstream the three-way catalytic converter of a FIAT fire 1242 cc spark ignition engine coupled to a dynamometer. The performance of the gas sensors was measured at the stoichiometric air/fuel ratio (A/F â¼Â 14.3) and in lean (A/F â¼Â 15) and rich (A/F â¼Â 13) conditions under different engine regimes (rpm and torque). The response of gas sensors was compared to the response of the commercial λ probe and related to the exhaust gas concentrations measured by spectroscopic analytical equipment at the engine exhaust end. Preliminary measurements showed promising results in terms of selectivity, sensitivity, stability, reproducibility, and response time.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Sensors and Actuators B: Chemical - Volume 108, Issues 1â2, 22 July 2005, Pages 319-325
Journal: Sensors and Actuators B: Chemical - Volume 108, Issues 1â2, 22 July 2005, Pages 319-325
نویسندگان
Maria Luisa Grilli, Elisabetta Di Bartolomeo, Alessandra Lunardi, Laure Chevallier, Stefano Cordiner, Enrico Traversa,