The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.

The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.

Date of Patent:
Aug. 31, 2021

Filed:

Mar. 08, 2018
Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka, JP;

Inventors:

Ryo Ando, Hitachinaka, JP;

Hiroshi Onuki, Hitachinaka, JP;

Yoshiyuki Akiyama, Hitachinaka, JP;

Shigenobu Komatsu, Hitachinaka, JP;

Takeo Hosokawa, Hitachinaka, JP;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F02D 41/30 (2006.01); F02M 35/10 (2006.01); G01N 25/58 (2006.01);
U.S. Cl.
CPC ...
F02D 41/3005 (2013.01); F02M 35/1038 (2013.01); F02M 35/10393 (2013.01); G01N 25/58 (2013.01); F02D 2200/0406 (2013.01); F02D 2200/0414 (2013.01); F02D 2200/0418 (2013.01);
Abstract

According to the conventional knowledge, a thermal humidity measurement device has problems in which the direction of air flow is limited to one direction is too hard to handle in securing the humidity responsiveness because there are limitations on the mounting direction of the thermal humidity measurement device and the state of air flow. An introduction guide protrudes from an air introduction surface to the outside of a measurement chamber, is parallel to a humidity introduction port surface, and has a portion not in contact with an inlet surface of a humidity introduction tube as seen from any direction to guide the flow of air to the humidity introduction tube from any direction of 360°.


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