Exhaust gas purification device for internal combustion engine

摘要

There is provided an exhaust purifying system for an internal combustion engine comprising a fuel supply valve for supplying fuel to an exhaust passage for an internal combustion engine of a vehicle, an ignition device for igniting the fuel supplied from the fuel supply valve, and a controller for heating the ignition device to selectively realize at least an ignition temperature Ti in which the fuel can be ignited and a waiting temperature Ts in which the fuel cannot be ignited. The controller controls the waiting temperature Ts to be the lower as a predicted deceleration time tp that is the time for which a decelerating state of the vehicle lasts is larger.

主权项

1. An exhaust purifying system for an internal combustion engine comprising:
a fuel supply valve for supplying fuel to an exhaust passage for an internal combustion engine of a vehicle; an ignition device for igniting the fuel supplied from the fuel supply valve; and a controller for controlling the ignition device to realize, when the vehicle is in deceleration, a first temperature of the ignition device at which the fuel will be ignited in a predetermined ignitable atmosphere, and when the vehicle is not in deceleration, a second temperature of the ignition device at which the ignition device is heated but the fuel will not be ignited in said predetermined ignitable atmosphere, wherein the controller controls the second temperature to decrease as a predicted deceleration time that is the time for which a decelerating state of the vehicle is expected to last is longer.