A waste heat recovery system of an internal combustion engine and method for operating a waste heat recovery system of an internal combustion engine

摘要

A waste heat recovery system of an internal combustion engine, wherein the waste heat recovery system comprises a working fluid circuit 1 with at least one in a waste heat flow of the internal combustion engine 5 connected heat exchanger 2, 2a, coupled to an electric machine 16 expansion machine 11, a condenser 12 and a fluid pump 15. According to the invention, a waste heat recovery system for an internal combustion engine 5 and a method for operating such a waste heat recovery system, which is improved over the prior art. This is achieved in that a device for speed reduction of the expansion machine 11 is provided or that the speed reduction of the expansion machine 11 in dependence of an operating condition of the internal combustion engine 5 and / or the waste heat recovery system by means of the device, which is in particular the electric machine 16 is adjustable.