Heated Thick-Film Titania Exhaust Gas Oxygen Sensors

Pfeifer, Joerg; Libsch, T. A.; Wertheimer, H. P.

doi:10.4271/840142

Cited by 6 publications

(2 citation statements)

References 8 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The Lambda sensor depends of a certain temperature to function; 150°C for a heated sensor and at least 350°C for the unheated sensor. As an example for Zirconia oxygen sensor, the two electrodes provide a voltage function of the quantity of the oxygen of exhaust gases relative to that in the atmosphere [4]. The voltage signal is nonlinear and the oxygen sensor have a great sensibility near the stoichiometric point (0.2 V DC represents a lean mixture of A/F, ideal set point 0.45 V DC, 0.8VDC represents a rich mixture of A/F).…”

Section: Introductionmentioning

confidence: 99%

Oxygen Sensor Testing for Automotive Applications

Tutunea

Dumitru

Oţăt

et al. 2020

AMM

View full text Add to dashboard Cite

During the operation of internal combustion engines the air-fuel ratio (A/F) is an important parameter which affects fuel consumption and pollutant emissions. The automotive oxygen sensor (Lambda) measures the quantity of residual oxygen in the combustion gases. Sensor degradation in time due to the exposure to high temperatures causes a distortion in controlling the A/F with the increase in gas emissions. In this paper an experimental stand is designed to test oxygen sensor degradation in laboratory condition. Four oxygen sensors were tested function of temperature and time recording their variation in resistance and voltage. The results showed similar values in the curves for all sensors tested.

show abstract

Section: Introductionmentioning

confidence: 99%

Oxygen Sensor Testing for Automotive Applications

Tutunea

Dumitru

Oţăt

et al. 2020

AMM

View full text Add to dashboard Cite

show abstract

“…4 The drawback of the solid electrolyte gas sensor is that a reference electrode at a fixed oxygen partial pressure is needed so that the size of the device becomes larger. 8 Also, the operating temperature of these sensors is high and the response time of the device is slow. The semiconductor gas sensors are widely used today to overcome these problems.…”

Section: Introductionmentioning

confidence: 99%