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配流閥容積效率對(duì)三缸內(nèi)燃水泵工作性能的影響
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Effect of Distributing Valve’s Volumetric Efficiency on Working Performance of Three Cylinders Internal Combustion Water Pump
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    摘要:

    綜合考慮液體可壓縮性與液體連續(xù)流條件的影響,，建立了三缸內(nèi)燃泵(ICP)配流閥的動(dòng)力學(xué)模型,，研究了配流閥的容積效率特性。樣機(jī)工作頻率與配流閥的固有頻率成整數(shù)倍關(guān)系時(shí),，容積效率大幅度降低,。樣機(jī)標(biāo)定轉(zhuǎn)速與容積效率最低時(shí)的轉(zhuǎn)速較為接近,，不利于系統(tǒng)正常穩(wěn)定工作。容積效率的變化對(duì)ICP的燃油消耗率,、輸出流量,、有效熱效率、有效功率等性能指標(biāo)影響較大,，但對(duì)輸出壓力基本沒有影響,。

    Abstract:

    Taking the compressibility and continuity characteristics of liquid into account, the dynamic model of distributing valves was constructed, and the volumetric efficiency character was studied. When the working frequency was approximately to the round number times of the natural frequency of valves, the efficiency was seriously low. The nominal rotational speed of the prototype was close to the speed where the volumetric efficiency was the lowest, which was harmful to the normal work of ICP. The change of volumetric efficiency has great influence on the fuel-consumption, output flow, effective thermal efficiency, effective power and so on, but little on the output pressure. 

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王衛(wèi)超,張鐵柱,張洪信.配流閥容積效率對(duì)三缸內(nèi)燃水泵工作性能的影響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2009,40(2):76-80. Effect of Distributing Valve’s Volumetric Efficiency on Working Performance of Three Cylinders Internal Combustion Water Pump[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(2):76-80.

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