Patent ID: 11891939
Assignee: NISSAN MOTOR CO., LTD.
Field: Environmental technology (Chemistry)
Classification: CPC F  Y | IPC F

Claim 16:
17. A device for controlling a vehicle, comprising:
an internal combustion engine;
an exhaust gas purification apparatus provided in an exhaust passage of the internal combustion engine, and including an exhaust particulate filter capable of trapping fine exhaust particles in exhaust gas, and a three-way catalyst positioned on a downstream side of the exhaust particulate filter;
an air pump and a secondary air introduction passage capable of supplying oxygen to the exhaust particulate filter;
an electronic control unit for estimating an accumulation quantity of the fine exhaust particles trapped in the exhaust particulate filter;
an exhaust particulate filter temperature sensor for detecting a temperature of the exhaust particulate filter; and
the electronic control unit being configured to supply oxygen to the exhaust particulate filter when the fine exhaust particles are accumulated in the exhaust particulate filter and the temperature of the exhaust particulate filter is equal to or higher than a predetermined temperature, when the internal combustion engine is being stopped during travel,
wherein the electronic control unit is configured to set a supply quantity of the oxygen to be supplied to the exhaust particulate filter during stopping of the internal combustion engine according to a temperature of the oxygen to be supplied to the exhaust particulate filter and the temperature of the exhaust particulate filter, or to set the supply quantity of the oxygen to be supplied to the exhaust particulate filter during stopping of the internal combustion engine according to the accumulation quantity of the fine exhaust particles trapped in the exhaust particulate filter and the temperature of the exhaust particulate filter, and
wherein the supply quantity of the oxygen to be supplied to the exhaust particulate filter during stopping of the internal combustion engine is set smaller as the accumulation quantity of the fine exhaust particles trapped in the exhaust particulate filter is larger.