Patent ID: 6691665
Filing Date: 2004-02-17
Classification: F02B,F02D,F02M

Abstract:
A method of operating a multiple cylinder bank selectively deactivatable cylinder variable displacement engine comprising:operating said engine with a first group of cylinders connected to a first plenum; selectively operating said engine with a second group of cylinders connected to a second plenum; inducing air into said first plenum via a first inlet and a first throttle when said engine is operating with said first group of cylinders; additionally inducing air into said second plenum via a second inlet and a second throttle when said engine is operating with said first and second groups of cylinders; and reducing cancellation of acoustic output of said first and second inlets so that said acoustic output resembles a sound of an engine operating with only said first group of cylinders when said engine is operating with said first and second groups of cylinders.