Physical quantity detection device

Number of patents in Portfolio can not be more than 2000

United States of America

PATENT NO 12158365
APP PUB NO 20240027245A1
SERIAL NO

18266399

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Abstract

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A physical quantity detection device for reducing an influence of a sound wave generated in a turbocharger and suppressing a decrease in detection accuracy of a physical quantity including a flow rate of gas. The device detects a physical quantity of air from an intake passage of an engine equipped with a turbocharger. The physical device includes a sub-passage that takes in part of air flowing from an upstream to a downstream side of the intake passage along a first direction, and a flow rate detection unit that detects a flow rate of the air taken in the sub-passage. The sub-passage includes an inlet that opens toward the upstream side in the first direction, an outlet that opens toward the downstream side in the first direction, and an attenuation chamber that attenuates a sound wave propagating from the turbocharger to an inside of the outlet.

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Patent Owner(s)

Patent OwnerAddress
HITACHI ASTEMO LTD2520 TAKABA HITACHINAKA-SHI IBARAKI 3128503 ?3128503

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Araki, Yushi Hitachinaka, JP 5 2
Gorai, Nobuaki Hitachinaka, JP 16 28
Uenodan, Akira Hitachinaka, JP 53 102

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