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英国利物浦液压工厂供应一种变量液压传动装置。该装置可控制由Vickers造船工程公司生产的新型发电机恒速传动装置(CSGD)行星齿轮箱的传动比。当主机速度允许变化时,CSGD将使船舶主推进发动机有可能生产恒频电力而不需单独的柴油机发电机组。在Vickers装置中,Commercial型HD2-4000变量液压泵供应两个定量型HD2-4000马达,驱动连接柴油机功率输出到交流发电机的行星齿轮箱的反馈部件。通过改变液压泵的输出流量和方向,调节行星齿轮箱的变速比,在输入转速为900～1200转/分的范围内时保持输出恒定的转速。
Liverpool, UK hydraulic plant supplies a variable hydraulic transmission. The unit controls the gear ratio of the new Generator Planetary Gearbox (CSGD) planetary gearbox manufactured by Vickers Shipbuilding and Engineering. When the host speed is allowed to change, CSGD will make it possible for the ship’s main propulsion engine to produce constant frequency power without the need for a separate diesel generator set. In the Vickers unit, the Commercial HD2-4000 variable displacement hydraulic pump supplies two quantitative HD2-4000 motors that drive the feedback components of a planetary gearbox that connects the diesel’s power output to the alternator. By changing the output flow and direction of the hydraulic pump, the speed ratio of the planetary gearbox is adjusted and the output constant speed is maintained when the input speed is in the range of 900 to 1200 rpm.