Hydrostatic-mechanical drive with optimised energy consumption for auxiliaries of a motor vehicle with power steering

摘要

A hydrostatic-mechanical drive with optimised energy consumption for auxiliary units such as the ventilator (L), compressed air compressor (K), generator (G), air-conditioning compressor, coolant pump (W), pump(s) (PAG), a shaft (AG) of the working unit and the like of a motor vehicle with power steering is proposed, in which case the auxiliary units can be driven mechanically individually or in groups by a hydromotor (HM) supplied by a pressure oil feed system (DFA) which can be controlled with respect to feed pressure and volume and contains at least one pump driven by internal combustion engine, and can be connected and disconnected or coupled and uncoupled if appropriate as a function of a control in accordance with the requirements. The pressure oil supply to the power steering (SL) takes place without a steering booster, which was necessary hitherto, by connection and integration of the elements (10, 11, VL, 20, LB1, LB2) of the power steering (SL), by lines, in the output-side pressure oil return branch (12) of the hydromotor (HM). IMAGE