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汽油機(jī)電液式可變氣門正時(shí)系統(tǒng)響應(yīng)性能仿真與試驗(yàn)
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國(guó)家自然科學(xué)基金資助項(xiàng)目(50776061)


Experiment and Simulation on Response Performance of Electro-hydraulic VVT System for Gasoline Engine
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    摘要:

    汽油機(jī)電液式可變氣門正時(shí)系統(tǒng)(VVT)的響應(yīng)性能對(duì)發(fā)動(dòng)機(jī)燃燒、排放均有重要影響,汽油機(jī)瞬態(tài)過程中電液式VVT應(yīng)根據(jù)發(fā)動(dòng)機(jī)工況快速調(diào)整到目標(biāo)相位，但由于電液VVT的響應(yīng)性能受到多方面因素的影響，其速度尚有進(jìn)一步提升的空間。基于試驗(yàn)和仿真分析，對(duì)影響電液VVT響應(yīng)性能的發(fā)動(dòng)機(jī)轉(zhuǎn)速、機(jī)油溫度、機(jī)油壓力等因素進(jìn)行了分析，并詳細(xì)分析了VVT階躍響應(yīng)過程各階段的影響因素，提出了基于MAP查表的VVT前饋控制算法，試驗(yàn)結(jié)果表明，該算法能夠?qū)崿F(xiàn)VVT快速響應(yīng)，同時(shí)保證穩(wěn)定性。

    Abstract:

    The response performance of electr-hydraulic VVT technology has significant influence on combustion and emission of gasoline engine. Actual valve timing value should be quickly adjusted to target value on transient operation conditions for gasoline engine. Response speed of electro-hydraulic VVT can be further improved since it has constraints for breakthrough. Factors which have influence on the response speed of electr-hydraulic VVT were studied by both experiment and simulation. Step response process was divided into several sub-process and analyzed. Feed forward control algorithm was designed and applied in VVT control. Experiment results showed that the proposed method could achieve rapid response of VVT and assure the stability at the same time.

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班智博,謝輝,何宇.汽油機(jī)電液式可變氣門正時(shí)系統(tǒng)響應(yīng)性能仿真與試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(9):12-18，29. Ban Zhibo, Xie Hui, He Yu. Experiment and Simulation on Response Performance of Electro-hydraulic VVT System for Gasoline Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(9):12-18，29.

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  • 在線發(fā)布日期: 2013-09-11
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