Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/1997
標題: UAV Wankel燃油噴射式引擎之設計與製作
Design and Implement of the Fuel Injection System for an UAV Wankel engine
作者: 馮俊宇
Ferng, Junn-Yeu
關鍵字: rotary engine;轉子引擎;fuel injeciton;engine control;燃油噴射;引擎控制
出版社: 機械工程學系所
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摘要: 
近幾年來,因應軍事,農業,與氣象量測等需求,無人飛機(UAV)的發展相當迅速。而航空發動機具有重量小,輸出馬力大的需求,與轉子引擎的特色正好吻合,故無人飛機的發展帶動轉子引擎的需求,使沉寂一陣的轉子引擎再度受到重視。轉子引擎除重量小輸出馬力大之外,尚有動力產生連貫、構造簡單、振動小等優點。
但轉子引擎有耗油量較高的缺點。因為燃燒室狹長,燃燒時間短,故燃燒較不完全。在低速起動時,會排出大量的碳氫化合物廢氣。因此本研究之目的為建立一UAV轉子引擎之燃油噴射系統,控制燃油噴射量,使得引擎更精準地進行完全燃燒,以維持一定的動力,並且降低UAV轉子引擎整體油耗。
本研究模擬計算UAV不同飛行模式下之需求推力,進而找出此需求推力下以螺槳為輸出負載之引擎操作點。藉此選擇UAV轉子引擎之燃油噴射控制目標,制定不同的控制策略。由於UAV多處於穩定巡航狀態,因此針對該狀態,建立引擎穩態運轉模式,以降低UAV轉子引擎之油耗為主要目標,來提升巡航力。

Because of the requirements and applications in military, farming industry and meteorology measurement…etc, the development of Unmanned Air Vehicles (UAV) grows fast in recent years. One of the main requirements of an UAV engine is to have small volume, light weight with large power output, which is exactly the main advantage of a Wankel engine. Besides, the power outputs of Wankel engines are more continuous with lower variations and lesser moving parts compared with reciprocating piston engines. For these reasons, Wankel engines once again become popular in small aircraft application field.
But the drawback of a wankel engine is the higher fuel consumption which is critical to an aircraft. In order to overcome this drawback, this study developed a fuel injection system for an UAV wankel engine, to improve the performance and fuel consumption of the UAV wankel engine.
In this study the required thrust of an UAV in several steady fly conditions were simulated. The power requirements and operating conditions of a Wankel engine with a fixed propeller to fit the required thrust were then been calculated. Based on the result of simulation, the fuel injection system was built under several steady operating modes for the Wankel engine to improve the fuel consumption and the endurance of the UAV.
URI: http://hdl.handle.net/11455/1997
其他識別: U0005-0801200915441600
Appears in Collections:機械工程學系所

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