A lambda sensor with a plate-type structure

Conference · Tue Dec 31 04:00:00 EST 1996

OSTI ID:441255

Kim, Byung-Ki; Lee, Jong-Heun; Lee, Chungho; Kim, Hoin ^[1]

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1. SAMSUNG Advanced Inst. of Technology (Korea, Republic of)

A new lambda sensor was constructed with a plate-type structure using a single YSZ (Yttria Stabilized Zirconia) solid electrolyte plate shared by electrochemical oxygen pumping and sensing cells. A reference electrode with the constant oxygen concentration was used instead of air reference electrode. Oxygen was formed by the electrochemical oxygen pumping from the electrode 1 to the electrode 3 which was covered by a porous layer for gas diffusion barrier. The voltages between the electrode 2 and 3 were used as the sensing signal. A protective layer was established on the electrodes 1 and 2. The sensor was fabricated by co-firing of laminate at 1450{degrees}C, for 2 hrs. The dynamic response characteristics were tested in the exhaust gas of a real engine and the static ones were studied in a controlled test gas containing N{sub 2}, O{sub 2}, CO, and CO{sub 2} gases.

• OSTI ID: 441255
• Report Number(s): CONF-960782--
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
CARBON DIOXIDE
CARBON MONOXIDE
DESIGN
ELECTROLYTIC CELLS
FABRICATION
MEASURING INSTRUMENTS
MONITORING
NITROGEN
OXYGEN
PERFORMANCE
SOLID ELECTROLYTES
YTTRIUM OXIDES
ZIRCONIUM OXIDES