Patent ID: 7340885

Claim:
A system for providing assistance in the regeneration of depollution means associated with oxidation catalyst-forming means, the means being integrated in an exhaust line of a motor vehicle diesel engine and in which the engine is associated with common manifold means for feeding the cylinders of the engine with fuel, and being adapted at constant torque to implement a strategy of regeneration by injecting fuel into the cylinders in at least one post-injection, the system comprising: means for detecting a regeneration request and thus a request for post-injection; means for detecting a period in which the engine is idling; means for acquiring the temperature downstream from the catalyst-forming means; means for determining a maximum quantity of fuel to be injected through post-injections during this period by implementation of the strategy of regeneration, on the basis of said temperature; and reduction means for progressively reducing the or each post-injection as soon as the total quantity of fuel that has been injected through post-injections since the start of the post-injections during this period reaches the predetermined maximum quantity.