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.:
Date of Patent:
Jun. 26, 2007
Filed:
Apr. 05, 2006
Shinsuke Takakura, Kariya, JP;
Masao Kano, Gamagori, JP;
Noriyasu Amano, Gamagori, JP;
Shinsuke Kiyomiya, Seto, JP;
Yuusaku Nishimura, Toyota, JP;
Shinsuke Takakura, Kariya, JP;
Masao Kano, Gamagori, JP;
Noriyasu Amano, Gamagori, JP;
Shinsuke Kiyomiya, Seto, JP;
Yuusaku Nishimura, Toyota, JP;
Denso Corporation, , JP;
Abstract
When a gas flow producer is driven, plural kinds of gases flow into a measure-passage at respective timing. An orifice is provided in the measure-passage. The orifice has a diameter-changing portion which restricts a separation of gases from an inner surface of the measure-passage. A pressure sensor is provided in the measure-passage to detect a pressure determined by the orifice and the gas flow producer. A microcomputer calculates a density ratio between the gases based on the detected differential pressure.