2007-08-012024-05-17https://scholars.lib.ntu.edu.tw/handle/123456789/678401摘要：無凸輪軸電磁式汽門機構具有提高內燃機引擎汽門電子控制之潛力，全然獨立之可變汽門正時與可變汽門升程可藉由此類電磁式汽門機構來達成，這些特性可使引擎在降低有害廢氣排放、增進引擎輸出扭力與降低引擎耗油率等性能提升。 本計畫研發電磁式汽門機構，探究該機構尚待克服之技術瓶頸，改良電磁式汽門結構，採用高密度永久磁鐵整合於電磁系統，以增進系統動態特性。 經由系統設計、動態模擬與實驗平台製作，期能提升電磁式汽門運用於內燃機之關鍵技術。 本計畫設計之汽門機構不同於傳統雙線圈雙彈簧機構，結合永久磁鐵之電磁系統，機構為單線圈單彈簧所組成之裝置，汽門接近關閉位置時系統穩定性提高，並藉由規劃非線性控制架構之可行方案，預期能提升汽門柔性歸位之控制性能。 此計畫研發製作之汽門機構實驗平台將具備一對進排汽門，可檢驗控制器能否有效抑制氣門動態特性之差異，亦可作為將來更複雜可變汽門機制之開發平台。 在電能管理技術方面，將規畫超高電容整合於能量管理系統之可行性，使驅動器之電源多樣化，降低電力供應系統所需之功率與成本。 <br> Abstract: Camless electromechanical valvetrain offers potential for making a high-performance electronic control of the internal combustion engine valves. Fully variable valve timing and variable valve lifting can be achieved with such electromagnetic actuation. These flexibilities allow for better engine performance which can potentially reduce automotive emission, improve torque output, and reduce fuel consumption. The development of an electromechanical valvetrain system is proposed in this project. We will analyze the control difficulties, refine the valvetrain architecture, and improve the dynamic performance by integrating the permanent magnetic in system model. To address this issue, this project design a new system, make the system simulations, and manufacture the experimental platform in order to promote the ability in electromechanical valvetrain control. The proposed electromechanical valvetrain actuators are different from the pervious designs which are based on two solenoids and two springs. Combining the permanent magnetic in actuator system, the new architecture consists of single solenoid and spring. The stability can be improved during the valves are closing and the soft seating performance can be achieved by introducing the nonlinear control strategy. The experimental platform designed comprises a pair of intake and exhaust valves which is suitable for performing the control performance examinations in face of the distinct valve dynamics; and further, the elaborated valve control schemes can also be development in the platform as well. According to the energy efficiency issue, the possibility of the power management system incorporating the ultra-capacitors in the power system will be addressed that provides energy diversity and reduces the power and cost of the power drive.無凸輪軸電磁式汽門超高電容柔性歸位控制Camless electromechanical valvetrainultra-capacitorsoft seating control.