Loss Analysis and Concept Comparison for Electrically Driven Hydraulic Loader Crane

The load-sensing system has for a long time been the most energy efficient hydraulic widely used mobile machines. When replacing combustion engine drive with an electric battery as source incentive using more systems arise. Some promising examples of are independent metering systems, pump controlled and open flow control systems. Before getting to deeply involved in specific design, investigation intended application is importance. objective this study present large number designs electrified loader crane by means loss analysis high level concept comparison. To be able cover design space all modeled based on static pressure-flow relations their components. Based measurements, losses from simultaneous operation, backpressure load holding valve found largest contributors system. If electrical supply added reference sensing system, overall efficiency 23 %. it account 62 % 38 comparison shows that two or four recuperation possibilities can decrease consumption complete studied working pattern about 50