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AssigneeHonda Giken Kogyo Kabushiki Kaisha
InventorsMasahiro Sato, Yoshihisa Iwaki, Masaki Ueno, Shusuke Akazaki, Takashi Haga, Tadashi Sato, Yasuyuki Miyahara
Estimating the term…
A failure determination device that detects the humidity of exhaust gases from an internal combustion engine and a control system for an exhaust passage changeover valve, which can switch the changeover valve with appropriate timing, thereby enabling sufficient purification of exhaust gases. An operating condition of the engine is detected. Based on the detected operating condition of the engine, it is determined whether the engine is in an operating condition in which failure determination of the humidity sensor can be executed. It is determined whether the humidity sensor has failed, based on a result of detection by the humidity sensor, when it has been judged that the failure determination of the humidity sensor can be executed.
A failure determination device for a humidity sensor that detects humidity of exhaust gases from an internal combustion engine,
A control system for controlling an exhaust passage changeover valve of an internal combustion engine, the changeover valve switching an exhaust passage having a catalytic device arranged therein for purifying exhaust gases from the engine between a main exhaust passage and a bypass exhaust passage bypassing the main exhaust passage and having an adsorber arranged therein which is capable of adsorbing hydrocarbons and water in the exhaust gases,
Dependencies are inferred from the claim text.