A system and method for controlling an internal combustion engine operable with a first cylinder firing frequency and a second cylinder firing frequency to reduce or eliminate transmission of torsional vibrations associated with the second cylinder firing frequency to reduce or eliminate constraints...http://www.google.fr/patents/US8145410?utm_source=gb-gplus-shareBrevet US8145410 - Variable displacement engine operation with NVH management
Variable displacement engine operation with NVH management
