Air-fuel ratio sensing device for internal combustion engine

Details Air-fuel ratio sensing device for internal combustion engine Air-fuel ratio sensing device for internal combustion engine

1976-04-07

1977-07-26

Scovronek, Joseph

Chemistry: physical processes

Physical processes

Crystallization

23254E, 137468, 236 93R, 236101E, F16K 1738, G01N 2700, G05D 2302

Patent

active

040380343

ABSTRACT:
An air-fuel ratio sensing device for an air-fuel ratio control system of an internal combustion engine, which device includes a sensing element exposed to exhaust gases passing through an exhaust gas passageway. A housing surrounding the sensing element has a plurality of openings to admit the exhaust gases into the housing, and a plurality of temperature responsive valves associated with the openings, respectively, which are closed when the exhaust gases exceed an excessively high temperature to prevent the sensing element from being deteriorated due to excessively high temperature of the exhaust gases.

REFERENCES:
patent: 2698022 (1954-12-01), Fahnoe
patent: 3167400 (1965-01-01), Fisher
patent: 3263742 (1966-08-01), Rubin
patent: 3846080 (1974-11-01), MacLean et al.
patent: 3936794 (1976-02-01), Beaudoin et al.

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