Power plants – Internal combustion engine with treatment or handling of... – Having sensor or indicator of malfunction – unsafeness – or...
Reexamination Certificate
2005-08-16
2005-08-16
Tran, Binh Q. (Department: 3748)
Power plants
Internal combustion engine with treatment or handling of...
Having sensor or indicator of malfunction, unsafeness, or...
C060S276000, C060S286000, C060S287000, C060S297000, C060S300000
Reexamination Certificate
active
06928805
ABSTRACT:
A characteristic change of a humidity sensor19is detected based on the transitional characteristics of output data of the humidity sensor19with respect to integrated moisture quantity data representative of an integrated amount of moisture that is supplied to an HG adsorbent7by an exhaust gas after an engine1has started to operate. A parameter for grasping a state of the HC adsorbent7is 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.
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European Search Report dated Nov. 22, 2004.
Endo Tetsuo
Machida Kei
Sato Masahiro
Ueno Masaki
Yamazaki Hideharu
Armstrong, Kratz, Quintos Hanson & Brooks, LLP.
Honda Giken Kogyo Kabushiki Kaisha
Tran Binh Q.
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