Patent Number: 6,332,445

Title: Method for operating and valve drive for a multicylinder internalcombustion engine

Abstract: An engine is operated with two groups of cylinders, one of which groups isconstantly powered and a second of said groups is selectively operated bycutting it in and out. The second group of cylinders is cut in and out byswitching the valve lift of the associated charge-changing valves. Thevalve lift of the constantly operated cylinder group is also independentlyvariable so that in both operating states of the second cylinder group,consumption-optimized valve lifts can be set for the first cylinder group.

Inventors: Voss; Hartmut (Wimsheim, DE), Grunberger; Joachin (Sachsenheim, DE)


International Classification: F01L 13/00 (20060101); F02D 13/06 (20060101); F02B 75/00 (20060101); F02B 75/22 (20060101); F01L 013/00 ()

Expiration Date: 12/25/2014