Air-fuel ratio sensor unit

Details Air-fuel ratio sensor unit Air-fuel ratio sensor unit

1996-06-06

1998-09-08

Dombroske, George M.

Measuring and testing

Gas analysis

Gas of combustion

G01N 2758

Patent

active

058046992

ABSTRACT:
An air-fuel ratio sensor unit including a plate shaped pumping cell 11 with a pin hole 110, a sensing cell 12 including a reference gas chamber 160, a first and a second heating plates 13 and 14 which are arranged to contact with the top and bottom surfaces, respectively, of the pumping cell 11, and a spacer 15 arranged between the first heater 13 and the sensing cell 12. The spacer 15, and the first and the second heater plates 13 and 14 form a passageway for a gas to be detected.

REFERENCES:
patent: 4454494 (1984-06-01), Williams et al.
patent: 4535316 (1985-08-01), Wertheimer et al.
patent: 4570479 (1986-02-01), Sakurai et al.
patent: 4712419 (1987-12-01), Ikai et al.
patent: 4784743 (1988-11-01), Iino et al.
patent: 4909072 (1990-03-01), Logothetis et al.
patent: 5231864 (1993-08-01), Ishida et al.
patent: 5288389 (1994-02-01), Yamada et al.

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