Patent ID: 9057289
Filing Date: 2015-06-16
Classification: F01L,F02D,Y02T

Abstract:
1. An internal combustion engine, comprising: a working cylinder having two intake valves and two exhaust valves assigned thereto; a first camshaft and a second camshaft each actuating a respective one of said intake valves and a respective one of said exhaust valves; said first camshaft being configured as a variable camshaft with an adjuster for adjusting valve control times; said first camshaft including an outer shaft and an inner shaft, said outer shaft being configured as a hollow shaft, said inner shaft being disposed within said outer shaft, said outer shaft and said inner shaft each including at least a respective one of a plurality of cams; said outer shaft as well as said inner shaft being rotatable by said adjuster, said outer shaft and said inner shaft being rotatable relative to one another by said adjuster such that relative positions of given ones of said cams controlling given ones of said intake and exhaust valves are changeable; and a crankshaft, said second camshaft being driven by said crankshaft, and said second camshaft being configured as a fixed camshaft, wherein control times of the respective one of said intake valves and of the respective one of said exhaust valves assigned to said fixed camshaft are unchangeably set.