Multi Layered Zirconia Oxygen Sensor with Modified Rhodium Catalyst Electrode

Takayuki Ogasawara; Hiroshi Kurachi

doi:10.4271/880557

1988-02-01

Multi Layered Zirconia Oxygen Sensor with Modified Rhodium Catalyst Electrode 880557

This paper describes the design and operation of the multi-layered zirconia heated exhaust gas oxygen sensor having small-sized and sheet-shaped sensing element.

This sensor uses an electrode modified with a rhodium catalyst and heater by means of the thick-film technique. This modification of an electrode's composition and construction affects the reaction on unburned components in exhaust gas as well as the sensor performance.

By the addition of a rhodium catalyst, the zirconia exhaust gas oxygen sensor shows acute sensitivity and faster response properties in the transient state on emission component(NOx) generation, in such a way that these sensors show better emission control properties for reduction of NOx emission in current emission control systems.

The addition of a rhodium catalyst reduces the green effect of sensor properties, and no significant change of emission control properties is observed after 50,000 equivalent miles using the engine dynamometer durability test.

SAE MOBILUS

Subscribers can view annotate, and download all of SAE's content. Learn More »

Access SAE MOBILUS »

Digital $37.00 Print $37.00

Preview Document

We also recommend:

Standards

SAE Mobilus®

Publications

News

Events

Professional Development

A World in Motion (PreK-12)

Participate with SAE

SAE Membership

Donate

Multi Layered Zirconia Oxygen Sensor with Modified Rhodium Catalyst Electrode 880557

SAE MOBILUS