基於電樞釋放之引導式複合電子氣閥設計與測試

Design and Test for a Bypass-Type Hybrid Electromagnetic Valve with Optimal Armature Release

白松右(Song-Yu Bai)

指導教授 ： 蕭耀榮

國立臺北科技大學/機電學院/車輛工程系所/碩士(2013年)

https://doi.org/10.6841/NTUT.2013.00661

摘要

節能減碳是近年各產業紛紛投入推廣的目標，而車輛產業也漸漸發展出各種因應環保的車輛技術。內燃機引擎的改善主要朝向高效率、低耗能與低排污努力，其中發展高自由度汽門正時的無凸輪引擎可解決這些問題。本研究探討一種利用對稱性雙永久磁鐵和電磁鐵之複合式電子氣閥，該電子氣閥的特色為可取代傳統凸輪驅動汽門的設計，透過電磁驅動可使引擎有連續性的汽門正時。而本研究之永久磁鐵與電磁鐵複合式設計有別於過去曾經被發展的電子氣閥技術，過去的技術需使電磁線圈持續通電才能維持氣閥開啟或關閉，因此有能量消耗大的問題。本研究使用之複合式設計可利用永久磁鐵提供汽門開啟或關閉時的氣閥維持力，並利用順向引導式磁路的電磁鐵技術釋放氣閥，同時可避免逆向抵消式磁路設計有永久磁鐵退磁的問題。
本研究分為兩部分，第一部分利用磁路模擬分析軟體對電子氣閥可能探討的設計方向進行設定與模擬，探討磁力與彈簧力之間相互配合的關係，透過最佳化分析逐一得到該機構適合的設計方式，並成功使氣閥維持力達418.6 N，釋放降幅達68%之設計。第二部分建立電子氣閥測試平台，以加工後的成品透過平台測試證實引導式磁路之理論及其發展可行性。

關鍵字

電子氣閥 ； 進排氣門 ； 氣門正時 ； 無凸輪引擎

並列摘要

Carbon reduction is the goal which a variety of industry is trying to reach in the past few years. Accordingly, vehicle industry develops different kinds of techniques that match the idea. For instance, the improvement of internal combustion engine is mainly focusing on high efficiency, less energy consumption and less exhaust emissions, which we found that developing camless engine can directly provide valve timing of high degree of freedom. This research will investigate a hybrid electromagnetic valve(EMV). The feature of the hybrid EMV is the specific design which could replace camshaft and drive through electromagnetic the valve timing which provides the continuity control. In addition, the hybrid design of permanent magnets and electromagnets in this research differs from the old developed EMV. In the past, only continuous electrifying coil can maintain the valve to continue to be opened or closed, which leads to the huge consumption of energy. On the contrary, the hybrid design of this research can use the catching force the permanent magnets provide when the valve is being opened or closed, releasing valve of design using Bypass-Type Hybrid Electromagnetic Valve, while at the same time successfully avoid the problem of the demagnetization of permanent magnets.
This research is divided into two parts. In the first part, this research will use magnetic analysis software to imitate the possible design orientation of electromagnetic valve, and deeply investigate the partnership between magnetic force and spring force, seeking the most appropriate way through optimization analysis to design the electromagnetic valve one by one. At last, the catching force of the armature can be up to 418.6 N and release 68% of the force. In the second part, the research will develop a test platform of electromagnetic valve, through which practice the processed product to verify the theory of Bypass-Type Hybrid Electromagnetic Valve and the potentialities of developing the product.

並列關鍵字

electromagnetic valve ； intake-exhaust valve ； valve timing ； camless engine

參考文獻

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