Air flow meter

Details Air flow meter Air flow meter

1993-10-21

1994-07-05

Raevis, Robert

Measuring and testing

Simulating operating condition

Marine

G01M 1900

Patent

active

053257120

ABSTRACT:
An air flow meter has a body forming a main passage defining an intake air passage of an internal combustion engine. An auxiliary passage within the main passage has a longitudinal passage in the axial direction and at least one transverse passage in the radial direction of the main passage. The auxiliary passage is defined by a member having a radially directed portion connected to an internal wall of the main passage. A hollow space is provided in the radially directed portion to render the wall thickness of the radially directed portion substantially uniform. Additionally, the hollow space is separated from the longitudinal passage by an auxiliary member which, in a preferred embodiment, surrounds a heat sensitive resistor.

REFERENCES:
patent: 2859617 (1958-11-01), Adams
patent: 4578996 (1986-04-01), Abe et al.
patent: 4870857 (1989-10-01), Smith
patent: 4887577 (1989-12-01), Arai et al.

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