Patent ID: 6397584
Filing Date: 2002-06-04
Classification: F01N,F02D,F02M,Y02T

Abstract:
System for assisting the regeneration of a particle filter integrated into an exhaust line of a motor vehicle diesel engine and comprising:means for admitting air into an inlet of the engine; selectively closeable means for recycling the exhaust gas from the engine at the engine inlet; a turbocompressor; an oxidizing catalyst arranged upstream of the particle filter in the exhaust line; means for commonly supplying fuel to cylinders of the engine and having electrically controlled injectors associated with the cylinders; means for adding an additive to fuel, the additive deposited onto the particle filter in order to lower combustion temperature of the particles trapped in the filter; means for acquiring information relating to selected operating parameters of the engine and of members linked thereto; means for checking the operation of the admitting means, the recycling means, the turbocompressor and the supply system in order to control the operation of the engine; the checking means triggering a regeneration phase of the particle filter by combustion of the particles trapped in the latter, at the same time initiating a phase of multiple injections of fuel into the cylinders of the engine during their expansion phase; the checking means further closing the means for recycling the exhaust gases at the inlet of the engine during a regeneration phase of the particle filter to enable the checking of the composition of the gases at the inlet of the particle filter and isotorque operation of the engine.