Chemistry: electrical and wave energy – Apparatus – Electrolytic
Patent
1990-02-09
1991-02-05
Tung, T.
Chemistry: electrical and wave energy
Apparatus
Electrolytic
20415318, 204425, 204426, 204427, 204429, G01N 27407
Patent
active
049902350
ABSTRACT:
An oxygen sensor having a body formed of a solid electrolyte material on which electrodes are provided, and a diffusion chamber formed on one side of the body. The diffusion chamber is connected to the space in which the gas to be detected exists, i.e., the interior of the intake or exhaust pipe of an internal combustion engine. A plate is mounted on the body in which a pin-hole is formed for controlling the speed of diffusion of oxygen ions so that the concentration of oxygen ions in the diffusion chamber is equal to that in the detection space. A pore of pores is provided in a plate member forming the diffusion chamber, to enable a rapid equalization of the pressures of the detection space and diffusion chamber while maintaining a control of the diffusion of oxygen ions via the pin-hole.
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Toyota Jidosha Kabushiki
Tung T.
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