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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.

Patent No.:

US 9976976 B1

PDFFull Text
Date of Patent:
May. 22, 2018

Filed:

Feb. 03, 2014

Gas sensor apparatus and installation structure of gas sensor apparatus

Applicant:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, Ibaraki, JP;

Inventors:

Hiroshi Nakano, Tokyo, JP;

Masahiro Matsumoto, Tokyo, JP;

Satoshi Asano, Tokyo, JP;

Shinobu Tashiro, Hitachinaka, JP;

Assignee:

Hitachi Automotive Systems, Ltd., Hitachinaka-shi, JP;

Attorney:

Crowell & Moring LLP

Primary Examiner:

Clayton E LaBalle

Assistant Examiner:

Kevin Butler

Int. Cl.
CPC ...
G01N 27/12 (2006.01); G01N 27/18 (2006.01); G01K 13/02 (2006.01); G01N 33/00 (2006.01); G01F 1/684 (2006.01); F02M 35/10 (2006.01); G01D 11/24 (2006.01); G01F 1/692 (2006.01); G01N 27/407 (2006.01); G01N 1/22 (2006.01); G01M 15/10 (2006.01); G01N 9/36 (2006.01); F02D 41/18 (2006.01);
U.S. Cl.
CPC ...
G01N 27/18 (2013.01); F02M 35/1038 (2013.01); F02M 35/10386 (2013.01); G01D 11/245 (2013.01); G01F 1/684 (2013.01); G01F 1/6842 (2013.01); G01F 1/692 (2013.01); G01K 13/02 (2013.01); G01N 27/121 (2013.01); G01N 33/0016 (2013.01); F02D 41/18 (2013.01); F02D 2200/0414 (2013.01); F02D 2200/0418 (2013.01); G01K 2013/024 (2013.01); G01K 2205/04 (2013.01); G01M 15/102 (2013.01); G01N 1/2252 (2013.01); G01N 9/36 (2013.01); G01N 27/12 (2013.01); G01N 27/407 (2013.01); G01N 27/4077 (2013.01);
Abstract

To provide a gas sensor apparatus capable of preventing clogging of a gas intake port due to particles, droplets, or the like, of a gas and maintaining measurement accuracy for a long time, a gas sensor apparatusincludes a housing. The housingincludes an expansion chambercommunicating with an air intake passagevia an air intake port, and a measurement chambercommunicating with the expansion chambervia a communicating portion. A double squeezing structure including the gas intake portand the communicating portionis provided, and two stages of regions where the volume expands between the gas intake portand the measurement chamberare provided. As a result, the movement of the air in the measurement chamberis decreased. It is possible to provide a structure in which the capacity of the gas intake portis increased to avoid clogging of the gas intake port due to particles or droplets.

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