초록 ▼

In order to provide a function of eliminating minute particles in exhaust gas to a control apparatus of an internal combustion engine, a filter temperature sensor, inserted in an exhaust path, for measuring a temperature of a filter for trapping minute particles of an exhaust gas, an electric heater

In order to provide a function of eliminating minute particles in exhaust gas to a control apparatus of an internal combustion engine, a filter temperature sensor, inserted in an exhaust path, for measuring a temperature of a filter for trapping minute particles of an exhaust gas, an electric heater for removing the minute particles deposited on the filter by combustion, and a control circuit are provided. In the control circuit, filter recovery is detected, a preheating instruction for raising the filter temperature is generated in accordance with the detection result, completion of the preheating of the filter is decided, an instruction for changing an injection pattern of the fuel injection valve for preheating the filter is generated, and an ON signal is supplied to the electric heater.

대표청구항 ▼

A method of controlling an internal combustion engine having a function of eliminating minute particles in exhaust gas by using a fuel injection valve which is provided in the internal combustion engine and in which a fuel injection timing is controlled, a filter temperature sensor, inserted in an e

A method of controlling an internal combustion engine having a function of eliminating minute particles in exhaust gas by using a fuel injection valve which is provided in the internal combustion engine and in which a fuel injection timing is controlled, a filter temperature sensor, inserted in an exhaust path, for measuring a temperature of a filter for trapping minute particles in exhaust gas, and an electric heater for removing minute particles deposited on the filter by combustion, said method comprising the steps of: detecting a filter condition of particle deposition on said filter for which a restoration of a filtering function is required; generating a preheating instruction for preheating the filter by raising a filter temperature when said filter condition is detected; generating a signal for changing, based on said filter preheating instruction, an injection pattern of the fuel injection valve for preheating the filter; determining based on a signal from said filter temperature sensor, whether or not said preheating for raising the filter temperature is completed; energizing said electric heater to combust particles on the filter, based on a condition of preheating of said filter; and releasing the filter preheating mode after said energization of said electric heater.