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AssigneeNissan Motor Co., Ltd.
InventorsTohru SHIBATA, Mina HOSHINO
Estimating the term…
A control unit determines whether icing has occurred in a pressure differential sensor that detects pressure loss of a gasoline particulate filter, or in an inlet-side pressure introduction pipe or an outlet-side pressure introduction pipe introducing pressure to the pressure differential sensor. Upon determining that icing has occurred, the control unit sets the count value of an icing cancelation counter to a prescribed initial value, and increases or decreases the count value from the initial value on the basis of the operating condition of an internal combustion engine, and when the count value reaches a prescribed threshold value for canceling the icing determination, determines that the icing has melted. The count value of the icing cancelation counter decreases while the internal combustion engine is temporarily stopped, and increases while the internal combustion engine is operating.
An exhaust system state determination method for an exhaust system including an internal combustion engine mounted in a vehicle and a differential pressure sensor structured to measure a pressure loss at an exhaust particulate filter disposed in an exhaust passage of the internal combustion engine, the exhaust system state determination method comprising:
An exhaust system state determination device for an internal combustion engine mounted in a vehicle, the exhaust system state determination device comprising:
Dependencies are inferred from the claim text.