Apparatus for indicating the degree of dirtiness of a filter

Details Apparatus for indicating the degree of dirtiness of a filter Apparatus for indicating the degree of dirtiness of a filter

1995-08-09

1997-10-28

Dombroske, George M.

Measuring and testing

Simulating operating condition

Marine

73 38, 731182, 340607, 340451, B01D 35143, G01M 1500

Patent

active

056819889

ABSTRACT:
An apparatus for indicating the extent to which an air filter in an internal combustion engine is fouled. For this purpose the apparatus includes a pressure sensor, a sensor to detect the rotational speed of the engine, and an additional sensor which determines the load state of the engine. The signals of the three sensors are combined and serve to produce an air filter dirtiness indicating signal.

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patent: 5417101 (1995-05-01), Weich
patent: 5477731 (1995-12-01), Mouton

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