Patent ID: 8479869

Claim:
A construction machine comprising a pump ( 1 ), an energy accumulator ( 2 ) connected with the pump ( 1 ), which includes a first space ( 6 , 8 ) which is gas-filled, and a second space ( 7 ) which is designed such that in operation of the pump ( 1 ) the second space is filled by a fluid delivered by the pump ( 1 ) to thereby cause the second space to transition from a non-loaded condition to a fully loaded condition wherein the gas contained in the first space ( 6 , 8 ) is compressed, and a hydraulic motor ( 1 ) to be driven by the energy accumulator ( 2 ), wherein the energy accumulator ( 2 ) is designed such that the ratio of the volume of the first space ( 6 , 8 ) with fully loaded second space ( 7 ) to the volume of the first space ( 6 , 8 ) with non-loaded second space ( 7 ) is >0.5, wherein said construction machine is a wheel loader or dumper.