Air flow meter for internal combustion engine

Details Air flow meter for internal combustion engine Air flow meter for internal combustion engine

1989-10-10

1991-01-22

Raevis, Robert

Measuring and testing

Simulating operating condition

Marine

G01M 1900

Patent

active

049861166

ABSTRACT:
An air flow meter for an internal combustion engine comprises an intake air passage of an internal combustion engine, which is composed of a primary flow passage and an auxiliary flow passage having a specified length and a portion adapted to project within the primary flow passage and made substantially parallel to the direction of the air flow passing through the primary flow passage. A sensor for measurement of an intake air flowrate is disposed within the auxiliary flow passage. The primary flow passage is provided with a portion where the cross-sectional area of the primary flow passage is gradually reduced. In the vicinity of this cross-sectional area reducing portion, there is disposed an outlet of the auxiliary flow passage.

REFERENCES:
patent: 4472965 (1984-09-01), Knapp et al.
patent: 4478075 (1984-10-01), Oyama et al.
patent: 4495802 (1985-01-01), Kashiwaya et al.
patent: 4776213 (1988-10-01), Blechinger et al.
patent: 4870857 (1989-10-01), Smith
patent: 4873641 (1989-10-01), Nagaishi et al.
patent: 4887577 (1989-12-01), Arai et al.

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