Sistema de accionamiento hidráulico con recuperación de energía

摘要

The system has a drive unit (10) i.e. diesel engine, driving an apparatus e.g. hoisting winch (6), via a primary hydraulic circuit that comprises a hydraulic displacement machine (1) operated as a hydraulic motor and another machine (2) operated as a hydraulic pump. The machines are connected by hydraulic lines. A third machine (3) is connected with the apparatus to transmit mechanical energy. A high-pressure accumulator (5) is hydraulically connected with the machine (3). The accumulator is charged by the machine (1) that is connected with the drive unit for transmitting the energy. Independent claims are also included for the following: (1) a method for operating a drive system (2) a method for driving an apparatus via a hydraulic drive system with a drive unit.