Removal determination device for exhaust gas control apparatus
AssigneeToyota Jidosha Kabushiki Kaisha
InventorKeisuke NAGAKURA
Life of this patent
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Abstract
An exhaust gas control apparatus removal determination device that performs an exhaust gas control apparatus removal determination processing based on a change in temperature of exhaust gas flowing into an exhaust gas control apparatus provided in an exhaust path of an engine and a change in temperature of exhaust gas flowing out. The controller determines whether the first state in which the difference between the measured value and the estimated value of the engine output is greater than or equal to a predetermined value continues for a predetermined time or longer, and determines that the engine output is in the first state. If it is determined, execution of the removal determination processing is prohibited.
Claims6
A removal determination device for an exhaust gas control apparatus that is provided on an exhaust path of an engine installed in a vehicle and that is configured to reduce exhaust gas from the engine, the removal determination device being configured to perform removal determination processing of determining whether the exhaust gas control apparatus is removed from the exhaust path based on a change in temperature of the exhaust gas flowing into the exhaust gas control apparatus and a change in temperature of the exhaust gas flowing out from the exhaust gas control apparatus, the removal determination device comprising a controller for controlling the engine, the controller configured to
- determine that a current state of output of the engine is a first state, in which difference between a measured value of the output of the engine and an estimated value of the output of the engine that is calculated based on a parameter for controlling the engine is no less than a predetermined value is continuing for a predetermined duration time or more, and
- disable execution of the removal determination processing when the current state of the output of the engine is the first state.
A removal determination device for an exhaust gas control apparatus that is provided on an exhaust path of an engine installed in a vehicle and that is configured to reduce exhaust gas from the engine, the removal determination device being configured to perform removal determination processing of determining whether the exhaust gas control apparatus is removed from the exhaust path based on a change in temperature of the exhaust gas flowing into the exhaust gas control apparatus and a change in temperature of the exhaust gas flowing out from the exhaust gas control apparatus, the removal determination device comprising a controller for controlling the engine, the controller configured to
- determine that a current state of a measured value of torque output by the engine is a second state that is no lower than a torque threshold value set in advance,
- execute the removal determination processing when the torque of the engine is in the second state, and
- disable execution of the removal determination processing when the torque of the engine is not in the second state.
Dependencies are inferred from the claim text.