| 摘要 |
A hydraulic drive unit for self-propelled machines, composed of at least two hydraulic circuits, each of them fitted with a hydraulic engine and a pump with a constant pressure regulator, characterised in that each regulator (12) of the engines (4) is a regulator, in which the absorbing power (Q) of the engine changes proportionally to the pressure in the hydraulic circuit (A, A), and the regulators (12) are further pipe-connected with each other (14).<IMAGE>
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