Patent ID: 8196389

Claim:
A control method for an internal combustion engine including an exhaust gas post-treatment system and a system for recirculating exhaust gases to an intake, the method comprising: ending a regeneration mode of engine operation with intake throttling; causing the engine to operate temporarily in an intermediate mode after the ending of the regeneration mode by carrying out a partial throttling to reduce intake noise contrast; and causing the engine to change from an intermediate mode of operation with partial throttling to a normal mode without throttling when at least one signal is detected, wherein: the at least one signal includes an acceleration signal, the intake throttle is oriented in a first position at the end of the regeneration mode, during the intermediate mode, the intake throttle is opened from the first position to a second position, and after the intake throttle reaches the second position during the intermediate mode, a rate of opening the intake throttle is limited to less than a maximum speed in order to limit a rate of intake noise increase.