APPARATUS FOR CONTROLLING PARTICULATE CAPTURING FILTER REGENERATING MEANS OF DIESEL ENGINE

摘要

PURPOSE:To enhance the accelerating and decelerating performance of an engine at the time of regenerating a filter, by differentiating the output signal of an accelerator-opening detecting means, and controlling the intake-air decremental rate of an intake-air reducing means according to the value obtained by differentiating the output signal of the accelerator-opening detecting means. CONSTITUTION:In operation of an engine 1, judgement is made from the difference of the output signals of pressure sensors 7A, 7B disposed on the opposite sides of a filter 3 for capturing particulates contained in exhaust gas whether the amount of particulates capturned by the filter 3 has reached a prescribed value or not. Regeneration of the filter 3 is carried out by burning the particulates captured by the filter 3 by raising the temperature of exhaust gas through operation of a fuel increasing means 25 and an injection timing delaying means 31 which serve as a filter regenerating means. At the time of regenerating the filter 3, the output signal of an accelerator-opening sensor 12 is differentiated by a controller 6, and if judgement is made that the engine is under acceleration or deceleration, the opening of an intake throttle valve 45 disposed in an intake passage 44 to serve as an intake-air recucing means is controlled according to the value obtained by differentiating the output signal of the accelerator-opening sensor 12.