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弱混合動力柴油機起動工況仿真與試
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and Test on Starting Condition of Light-hybrid Diesel Engine
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    摘要:

    針對采用ISG弱混合技術柴油機常溫下的起動工況,通過分析控制策略,建立了柴油機的動態(tài)管理仿真模型和ISG電機電磁模型,,對ISG電機拖動柴油機的起動過程進行了仿真,,分析了起動過程中電機功率、轉矩隨柴油機轉速的變化關系,并與柴油機起動臺架試驗進行對比分析。研究表明,采用ISG技術后,,當蓄電池的電壓為36~60V時,均可將柴油機拖至目標轉速,,滿足起動要求,。起動時,ISG電機各繞組平均起動轉矩為87.4N?m,,線電流在30~150A,,輸出功率呈先增后減的變化趨勢,功率峰值為4.98kW,。從靜止到著火轉速的仿真起動時間只需0.4s,,試驗結果為0.5s;從靜止到怠速穩(wěn)定的仿真時間僅為2.8s,,試驗結果為3.1s,,試驗與仿真結果吻合,。

    Abstract:

    Aimed at the starting condition of light hybrid diesel engine with ISG technology in normal temperature, the working models of diesel engine and ISG electromotor were established. Then, the diesel engine moment of resistance on the starting condition was calculated to obtain the torque and the power from the ISG electrical machinery. And, the simulation to the starting process was carried out. Finally, the test of the ISG electromotor dragging diesel engine under the different voltage was performed to confirm the simulation result. The results showed that with the ISG technology, the diesel engine can be dragged to meet the requirement speed on the battery voltage of 36~60V. The average starting torque of ISG motor is 87.4N?m, the line current of each start winding is 30~150A. and the output power of ISG fall after the first increase with the peak power of 4.98kW. The simulated starting time from 0 to fire is 0.4s, compared with the test result of 0.5s; while time from 0 to stable idling in the simulation is only 2.8s, the test result is 3.1s. So, the test result is tallied with the simulation.

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魏長河,王忠,王宇成,黃成海,唐廷.弱混合動力柴油機起動工況仿真與試[J].農業(yè)機械學報,2010,41(4):6-11. and Test on Starting Condition of Light-hybrid Diesel Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(4):6-11.

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