14. A device for a vehicle or a production machine, comprising:
a first hydraulic pump, which hydraulically drives a load, and which is mechanically driven by an internal combustion engine;
a second hydraulic pump, which is hydraulically coupled to the first hydraulic pump;
an apparatus, which drives the second hydraulic pump, while utilizing the energy in the exhaust-gas stream of the internal
wherein the load: (i) is connected on an output side directly to a tank and (ii) is an auxiliary load and has a hydraulic
motor for the mechanical driving of a battery of at least one of a generator, a cooling pump, an air pressure compressor and
an air conditioning compressor.