Patent ID: 7555896
Filing Date: 2009-07-07
Classification: F01L,F02D

Abstract:
1. A method for operating an internal combustion engine with electrically actuated valves, the method comprising: operating the engine in a first mode with a first number of cylinders deactivated, and a first number of valves operating in each active cylinder to carry out combustion in the active cylinders; and operating the engine in a second mode with a second number of cylinders deactivated, and a second number of valves operating in each active cylinder to carry out combustion in the active cylinders, where said first number of cylinders deactivated is different from said second number of cylinders deactivated, and said first number of valves operating is different from said second number of valves operating, and where said first number of cylinders is less than said second number of cylinders, and said first number of valves is greater than said second number of valves, where plural intake valves of the cylinders are coupled to a common intake manifold, and where during the first mode, valve operation includes dual intake dual exhaust valve operation during the cycle, and during the second mode, valve operation includes alternating intake alternating exhaust valve operation.