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:
Aug. 16, 2005
Filed:
Oct. 21, 2002
Hideharu Yamazaki, Wako, JP;
Masahiro Sato, Wako, JP;
Kei Machida, Wako, JP;
Tetsuo Endo, Wako, JP;
Masaki Ueno, Wako, JP;
Hideharu Yamazaki, Wako, JP;
Masahiro Sato, Wako, JP;
Kei Machida, Wako, JP;
Tetsuo Endo, Wako, JP;
Masaki Ueno, Wako, JP;
Honda Giken Kogyo Kabushiki Kaisha, Tokyo, JP;
Abstract
A characteristic change of a humidity sensoris detected based on the transitional characteristics of output data of the humidity sensorwith respect to integrated moisture quantity data representative of an integrated amount of moisture that is supplied to an HG adsorbentby an exhaust gas after an enginehas started to operate. A parameter for grasping a state of the HC adsorbentis corrected. The state, such as a deteriorated state or the like, of a hydrocarbon adsorbent (HC adsorbent) is properly monitored while compensating for the effect of the characteristic change of the humidity sensor and the effect of variations of the characteristics of individual units of the humidity sensor.