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

Claim 0:
1. A method for controlling a vehicle comprising an internal combustion engine and an exhaust gas purification apparatus provided in an exhaust passage of the internal combustion engine, wherein the exhaust gas purification apparatus includes 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, the method comprising:
supplying, by an air pump via a secondary air introduction passage, oxygen to the exhaust particulate filter when the fine exhaust particles are accumulated in the exhaust particulate filter and a 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 a supply quantity of the oxygen to be supplied to the exhaust particulate filter during stopping of the internal combustion engine is set according to a temperature of the oxygen to be supplied to the exhaust particulate filter and the temperature of the exhaust particulate filter, or the supply quantity of the oxygen to be supplied to the exhaust particulate filter during stopping of the internal combustion engine is set according to an 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, and wherein the supply quantity of the oxygen is an amount of oxygen calculated based on at least the accumulation quantity of the fine exhaust particles in the exhaust gas and the temperature of the exhaust particulate filter.