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Hydraulic System Configurations for Improved Efficiency


The design and selection of a hydraulic system for a particular machine is based upon a variety of factors which include: functionality, performance, safety, cost, reliability, duty cycle, component availability, and efficiency. With higher fuel costs and requirements to reduce engine exhaust emissions, new hydraulic system configurations should be considered. Traditional hydraulic systems consume an excessive amount of energy due to metering losses. A single pump usually supplies flow to multiple functions, with differing flow and pressure requirements resulting in excessive metering losses. The energy of mass and inertial loads is usually dissipated by metering losses. Opportunities exist for reducing metering losses by the use of multiple pumps and by using hydrostatic control of individual functions. Hydrostatic control also allows for energy recovery when used in conjunction with an energy storage system. These alternative configurations have the potential of reducing engine size and reducing emissions by reduced transients and lower overall power requirement. This paper will discuss the source of hydraulic system losses and recommend alternative configurations that can result in dramatic reductions in energy requirements. A dynamic simulation of an example machine will be presented with an improved hydraulic system, illustrating the potential for reduced losses and the ability to accomplish the same functionality and control performance. The benefits of the alternative configuration will be analyzed in comparison to the costs.......

【作者名称】: Glenn R. Wendel
【作者单位】: Southwest Research Institute
【关 键 词】: Hydraulic System Configurations for Improved Efficiency
【会议名称】: 49th National Conference on Fluid Power, Mar 19-21, 2002, Las Vegas, Nevada USA
【期刊论文数据库】: [DBS_Articles_01]
【期刊论文编号】: 101,787,937
【摘要长度】: 1,558
【会议地点】: Las Vegas, NV(US);Las Vegas, NV(US);Las Vegas, NV(US);Las Vegas, NV(US)
【会议组织】: Southwest Research Institute
【会议时间】: 2002
【上篇论文】: 外文会议 - INFLUENCE OF THE SOURCE AND SINK TEMPERATURES ON THE OPTIMAL REFRIGERANT CHARGE OF A WATER-TO-WATER HEAT PUMP
【下篇论文】: 外文会议 - The Use of Life Cycle Assessment on Munitions

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