Camshaft assembly for internal combustion piston engine and how to convert the internal combustion piston engine to operate in at least two operating modes

摘要

The present invention relates to a camshaft assembly for an internal combustion piston engine, comprising a first end (16.1) and a second end (16.2) and an intermediate portion between the first end (16.1) and the second end (16.2). 18), said intermediate portion provided with cam surfaces of a camshaft assembly. The intermediate part 18 is connected to the first end 16.1 and the second end by first attachment means between the first end 16.1 and the intermediate part 18 and between the second end 16.2 and the intermediate part 18. 16.2, which is releasably assembled, the camshaft assembly 10 comprises a spacer portion 20, the spacer portion being provided with second attachment means at both longitudinal ends, and the second attachment means ( 20 is compatible for the releasable assembly with the first attachment means between the first end 16.1 and the intermediate portion 18.