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液壓約束活塞發(fā)動(dòng)機(jī)能量平衡分
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Balance Analysis of Hydraulic Confined Piston Engine
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    摘要:

    液壓約束活塞發(fā)動(dòng)機(jī)（HCPE）集成傳統(tǒng)的內(nèi)燃機(jī)與液壓泵為一體,，將燃料燃燒產(chǎn)生的熱能轉(zhuǎn)換為液壓能,，是一種新型的柔性動(dòng)力裝置,，能量平衡分析是其結(jié)構(gòu)優(yōu)化設(shè)計(jì)的重要依據(jù),。首先建立了HCPE的動(dòng)力學(xué)模型，仿真分析了HCPE標(biāo)定工況下能量輸入,、耗散,、分配及輸出情況。能量轉(zhuǎn)換中,，與燃燒有關(guān)的損失占57.65%、摩擦損失占6.24%,、液壓損失占7.78%,、有效功輸出占26.87%、其他損失占1.46%,。有效功比率隨轉(zhuǎn)速或油門開度的增大基本成中凸?fàn)睢?/p>

    Abstract:

    Hydraulic confined piston engine (HCPE) integrates traditional internal combustion engine and hydraulic pump into one assembly, which can transform the thermal energy from fuel combustion into hydraulic energy, is a new type of flexible power device. The dynamic model of HCPE was constructed firstly, and then the energy input, dissipation, distribution and output under nominal working condition were simulated. During energy transformation, the loss related to combustion is 57.65%, friction related loss is 6.24%, hydraulic system related loss is 7.78%, effective power output is 26.87%, and the other loss is 1.46%. The curve of effective power ratio shows convexity shape along with increase of rotational speed or throttling.

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張洪信,張鐵柱,霍煒,趙紅.液壓約束活塞發(fā)動(dòng)機(jī)能量平衡分[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(3):36-39. Balance Analysis of Hydraulic Confined Piston Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(3):36-39.

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