Patent ID: 8875675
Filing Date: 2014-11-04
Classification: F01N,F02D,Y02T

Abstract:
1. An internal combustion engine comprising: a cylinder head including two cylinders arranged in an inline configuration, a first cylinder included in the two cylinders having a first exhaust valve positioned in a first exhaust port and a second exhaust valve positioned in a second exhaust port, each exhaust port in fluidic communication with a separate exhaust gas line, the exhaust gas lines converging downstream forming an exhaust manifold; a boosting device providing boosted air to the two cylinders; and a valve actuating assembly including a first valve actuating mechanism cyclically actuating the first exhaust valve and a second valve actuating mechanism cyclically actuating the second exhaust valve, where the first valve actuating mechanism opens the first exhaust valve for a different duration of time than the second valve actuating mechanism; wherein a difference between the valve opening durations of the first and second exhaust valves is greater than 2 crank angle degrees and less than or equal to 10 crank angle degrees.