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渦輪增壓器動態(tài)特性測試用脈沖發(fā)生器設(shè)計
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國家自然科學(xué)基金資助項目(51176013);河北省科學(xué)技術(shù)廳科技支撐基金資助項目(11213913D)


Design of Pulse Generator Based on Turbocharger Dynamic Characteristics Measurement
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    摘要:

    為了準(zhǔn)確模擬增壓發(fā)動機(jī)實際排氣壓力波狀況,進(jìn)行渦輪增壓器動態(tài)特性測試,分析了發(fā)動機(jī)排氣壓力波特征,確定了脈沖發(fā)生器設(shè)計目標(biāo)。在前期研究的基礎(chǔ)上,對脈沖發(fā)生器轉(zhuǎn)動盤開口型線提出了改進(jìn)方案,利用一維非穩(wěn)態(tài)仿真計算和三維CFD計算相結(jié)合的方法,對脈沖發(fā)生器進(jìn)行了設(shè)計,模擬發(fā)動機(jī)不同頻率和不同進(jìn)氣相位的排氣壓力波。利用試驗對脈沖發(fā)生器產(chǎn)生的壓力波進(jìn)行了驗證,結(jié)果表明,設(shè)計的脈沖發(fā)生器可以準(zhǔn)確地模擬出典型的發(fā)動機(jī)排氣壓力波,證明了設(shè)計計算方法的可行性和改型方案的正確性,為脈沖發(fā)生器提供了一種比較完善的設(shè)計體系。

    Abstract:

    In order to accurately simulate the actual turbocharged engine exhaust pressure wave conditions for turbocharger dynamic characteristics measurement, the characteristic of engine exhaust pressure wave and the goal of pulse generator design were analyzed. A pulse generator rotating disc profile optimization was put forward on the basis of former research. The pulse generator used to simulate ICE to produce pressure wave was designed by using 1-D simulation and 3-D CFD. Experiment was carried out on the proposed generator. The experiment result showed that the pressure wave produced by pulse generator was similar to that of ICE, which proved the feasibility and validation of the optimization and the calculation method. A comparatively perfect design system of pulse generator was put forward.

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邢世凱,馬朝臣,于立國.渦輪增壓器動態(tài)特性測試用脈沖發(fā)生器設(shè)計[J].農(nóng)業(yè)機(jī)械學(xué)報,2013,44(5):13-18. Xing Shikai, Ma Chaochen, Yu Liguo. Design of Pulse Generator Based on Turbocharger Dynamic Characteristics Measurement[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(5):13-18.

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  • 在線發(fā)布日期: 2013-04-28
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