Is a
Patent attributes
Current Assignee
Patent Jurisdiction
Patent Number
Patent Inventor Names
Katsuaki Fukatsu0
Motoyuki Miyata0
Noboru Tokuyasu0
Date of Patent
May 5, 2009
0Patent Application Number
117344550
Date Filed
April 12, 2007
0Patent Primary Examiner
Patent abstract
The objects of the present invention are to provide a high-accuracy EGR sensor, and EGR system which adopts the above sensor to measure EGR rate. The gas flow meter comprises a sensor section for measuring fluid flow rate and controller for controlling signals transmitted into and out of the sensor section, and is controlled at a working temperature of 350 to 700° C., wherein a protective coat formed on the sensor section has resistance to temperature at which deposition of a PM component in exhaust gases can be prevented.
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