Because of the sharp fluctuation of the load condition, the working points of the engine are mostly distributed in the high fuel consumption area. This causes low fuel economy of the power source and is the main reason of high power losses in conventional hydraulic excavators. In order to solve this problem, a new control strategy based on hybrid technology was presented. Its target was to achieve power matching and optimize the working condition of the power sources simultaneously. Experimental results show that the control strategy can realize the target. It reduce the speed fluctuation and optimize the working points of the engine. Meanwhile, it achieves higher fuel economy than conventional methods.
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王冬云,管成,潘双夏,林潇.液压挖掘机功率匹配与动力源优化综合控制策[J].农业机械学报,2009,40(4):91-95. Strategy of Power Matching and Power Sources Optimization for Hydraulic Excavators[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(4):91-95.