A System and Method for Controlling an Engine

A system and method for controlling an engine 12 is disclosed. The engine 12 includes a number of pressure responsive devices 42, 44, 46, 48 varying compression ratios in corresponding engine cylinders 24, 26, 28, 30. The method includes commanding the devices 42, 44, 46, 48 to decrease compression ratios in the cylinders 24, 26, 28, 30, and further includes indicating when one of the devices 42, 44, 46, 48 has not decreased the compression ratio in the corresponding cylinder 24, 26, 28, 30. Finally, the method includes commanding the other devices 42, 44, 46, 48 to increase the compression ratio in the other cylinders 24, 26, 28, 30 to reduce engine torque fluctuations.