Patent Number: 6,253,606

Title: Thermosensitive flow rate sensor

Abstract: A highly accurate thermosensitive flow rate sensor is able to reduce the detection error of a flow rate even in the case of a flow accompanied by considerable intake air pulsation in an automotive engine or the like. A flow rate detecting section disposed in a main pipe is equipped with a support member having a first guide surface and a second guide surface for guiding a fluid on opposite sides thereof, and a flow rate detection element provided on the second guide surface of the support member. The second guide surface of the support member, on which the flow rate detection element is mounted, extends longer than the first guide surface in the downstream direction.

Inventors: Yonezawa; Fumiyoshi (Tokyo, JP), Yamakawa; Tomoya (Tokyo, JP), Hamada; Shingo (Tokyo, JP), Oshima; Takeharu (Tokyo, JP), Kotoh; Satoru (Tokyo, JP), Uramachi; Hiroyuki (Tokyo, JP), Yamauchi; Hidehito (Tokyo, JP)

Assignee: Mitsubishi Denki Kabushiki Kaisha

International Classification: G01F 1/684 (20060101); G01F 1/692 (20060101); G01F 001/68 ()

Expiration Date: 07/03/2018