Air meter for an internal combustion engine and method of produc

Details Air meter for an internal combustion engine and method of produc Air meter for an internal combustion engine and method of produc

1990-08-17

1992-01-28

Myracle, Jerry W.

Measuring and testing

Simulating operating condition

Marine

7320421, G01M 1900

Patent

active

050834550

ABSTRACT:
An air meter for an internal combustion engine. The air intake passage of the internal combustion engine includes a main passage and an L-shaped auxiliary passage. The auxiliary passage includes a first flow passage, a second flow passage and a corner portion arrnaged at a corner thereof. The first flow passage communicates to the second flow passage through the corner portion. The first flow passage is disposed in parallel with the main passage and has a hot wire sensor arranged therein. The second flow passage is arranged perpendicularly to the main passage. The first flow passage has a circular radial cross section. The second flow passage is in the shape of a groove with a bottom, the groove having a square cross-section. The first flow passage is open to the corner portion at a level of the bottom of the second flow passage. The corner portion has a circular cross section equal in diameter to and concentric to the circular radial cross section of the first flow passage, the cross section of the corner portion being taken at a level of the bottom of the groove portion and perpendicular to the first flow passage.

REFERENCES:
patent: 4501249 (1985-02-01), Amano et al.
patent: 4612895 (1986-09-01), Kuroiwa et al.
patent: 4624134 (1986-11-01), Nagano
patent: 4723443 (1988-02-01), Usui et al.
patent: 4887577 (1989-12-01), Arai et al.

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