Wide-Range Air-Fuel Ratio Sensor, 1986 Hitachi, Limited

Format:

Conference/Event

Author/Creator:

Ueno, Ueno, author.

Contributor:

Ichikawa, Norio

Suzuki, Seiko

Terakado, Kazuyoshi

Conference Name:

SAE International Congress & Exposition (1986-02-24 : Detroit, Michigan, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1986

Summary:

The oxygen ion conductive solid electrolyte cell served as a device for measuring the combustibles content and the oxygen content of an exhaust gas. The cell is comprised of a tubular electrolyte, two opposed electrodes and a porous diffusion layer located on the outer electrode surface. The sensor is employed to measure both rich and lean air fuel ratio through the use of an electronic circuit pumping the oxygen ions to achieve a constant voltage between the electrodes. The wide range detecting capability makes it particularly attractive for air fuel ratio control applications associated with the internal combustion engine.The result of the performance tests are as follows,Detecting range (air excess ratio λ) : 0.8 - " Step response time constant (63%) : 200ms Warm up time. - less than 80 sec at 20°C We found in the durability test concerned with the heat cycle and contamination that if initial aging treatment is applied the output variation ratio (. λ/λ) is limited with in : 5%

Notes:

Vendor supplied data

Publisher Number:

860409

Access Restriction:

Restricted for use by site license