A method and control system for controlling the primary engine of a load transportation machine, in particular a forwarder. The load transportation machine is configured to be driven on the ground at least off-road, with and without a load in an alternatin...

The invention relates to a pump unit (30) of a fluid circulation system of a drive assembly, the pump unit (30) comprising at least a hydraulic motor (33), a pump (36), and a separate reservoir (41). Fluid is pumped through the motor (33) from the separate...

A device (1) has been developed for a power supply system of a working machine (26), for supplying electric power to at least one actuator (27a-27c). The device (1) comprises a frame part (2) with a bottom (2b) The device (1) comprises a cooling liquid cha...

A method in a system for hydraulic drive transmission in a working machine, comprising a control system (6) for controlling the function, a pump (8) for producing a volume flow, a motor (9) for receiving the volume flow. In the method, the system is contro...