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柔性扁平循環(huán)圓液力元件葉柵系統(tǒng)設(shè)計方法
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國家自然科學(xué)基金資助項目(50905016);車輛傳動國家重點實驗室基金資助項目(9140C35020905);北京理工大學(xué)優(yōu)秀青年教師計劃資助項目(2008Y0309222)


Blades Design Method of Hydrodynamic Components with Flexible Flat Circular Circle
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    摘要:

    為提高車用液力元件功率密度,從葉柵系統(tǒng)設(shè)計角度出發(fā),通過對傳統(tǒng)圓形循環(huán)圓寬度約束條件和設(shè)計流線構(gòu)造方法進行分析研究,提出一種軸向?qū)挾瓤扇嵝哉{(diào)節(jié)的循環(huán)圓設(shè)計方法,僅利用循環(huán)圓參數(shù)有效直徑D、最小直徑d0和寬度極限Wlim3個參數(shù),可將其扁平比從原有0.31無級壓縮至0.19,據(jù)此實現(xiàn)了對應(yīng)葉柵系統(tǒng)設(shè)計,并編制了簡便快捷的程序。與傳統(tǒng)液力元件對比表明,在有效直徑和最小直徑一致的情況下,采用柔性設(shè)計方法,當(dāng)循環(huán)圓壓縮至軸向最小極限位置時工作腔體積減小至40.9%,有效地提高了液力元件功率密度,同時簡化了原有基于經(jīng)驗的循環(huán)圓設(shè)計方法。

    Abstract:

    In order to improve power density of vehicular hydrodynamic transmission components, with the aspect of structure design of cascade system, a blades design method for flat circular circle was put forward. Based on the analysis of constraint conditions and design streamline of traditional circular circle, the flatness ratio could be changed from 0.31 to 0.19 with only three parameters of effective diameter D, minimum diameter d0 and width limit Wlim. Besides, the program was rapid and convenient. Compared with traditional hydrodynamic components, the working volume obtained by flexible flat circular circle could be compressed to 40.9% with the same maximum diameter D and minimum diameter d0. The power density of hydrodynamic components was improved effectively and meanwhile traditional circular circle design method was simplified distinctly.

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魏巍,劉城,閆清東.柔性扁平循環(huán)圓液力元件葉柵系統(tǒng)設(shè)計方法[J].農(nóng)業(yè)機械學(xué)報,2011,42(4):33-38. Wei Wei, Liu Cheng, Yan Qingdong. Blades Design Method of Hydrodynamic Components with Flexible Flat Circular Circle[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(4):33-38.

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