Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/2109
標題: 爪子引擎之性能分析研究
Analysis of the Performance of the Claw Engine
作者: 黃政傑
CHIEH, HUANG CHENG
關鍵字: claw emgine;爪子引擎;claw;engine;引擎;爪子
出版社: 機械工程學系所
引用: 參考文獻 [1]. Hakchul Kong, Robert L. Woods “A Variable-Resonance Vortex Amplifier for Use In Intake Manifold Tuning”, FLUCOME 91 ASME, 1991. [2]. Laurent-Charles Valdes, Renaud Theis, Benoit Barthod, and Bernard Desmet, “Calculating transient flows through ducts of non-constant rectangular shape” Vacuum/volume 48/number 10/pages 839-843/1997. [3]. Laurent-Charles Valdes, Benoit Barthod, Yves Le Perron, “Accurate prediction of internal leaks in stationary dry Roots vacuum pumps” Vacuum 52 (1999)451-459. [4]. 施尚融,「葉頂間隙對壓縮機性能之影響」,碩士論文,國立成功大學。 [5]. Jehad A.A. Yamin, Mohammad H. Dado, “Performance simulation of a four-stroke engine with variable stroke-length and compression ratio”, Applied Energy 77 (2004) 447–463. [6]. Dr. Philip Rubini, ” Numerical Modelling and Simulation of Rotary Engine”, Cranfield University, 2003. [7]. 左承基,压缩空气发动机的设计及初步试验,合肥工业大学学报,第28卷第6期2005年6月。 [8]. 许 宏,压缩空气动力汽车的可行性研究,中国机械工程第13 卷第17期2002年9月上半月。
摘要: 
本研究主要是進行爪子引擎構想可行性的探討,執行的工作包括爪子引擎設計參數的性能分析,建立完整循環模式與完整循環模式的使用者介面,建立冷卻水套分析模式。
本文先以空氣標準循環(Air Standard Cycle)的分析方式,以空氣為系統工作流體,並將系統工作過程簡化,以得到系統的性能,再進一步建立完整的循環模式。完整的循環分析模式是將空氣標準循環模式修正,加入更多實際引擎運轉時會發生的過程,包括洩漏,燃燒,熱傳,暫態啟動,已完成的循環計算為洩漏與燃燒過程,計算範圍從壓縮腔進氣開始,壓縮腔排氣進入儲氣槽,再從儲氣槽排氣到燃燒腔,直到燃燒後的排氣完成。完整循環分析模式中包括洩漏量模式,充氣模式,燃燒模式,熱傳模式,能量平衡模式,以上模式皆已完備的建立在完整循環程式之中。建立完整循環分析模式,可以清楚得知整個爪子引擎在運作時,所有角度的性質,並減少在分析時所需要事先給定的假設值,能較準確的預測引擎性能,評估各設計參數對引擎性能的影響。建立完整循環分析模式後,本研究利用Visual Basic將完整循環分析模式,整合為容易使用的介面,讓所有設計者能夠輕易的選擇任何設計參數進行分析。
整個爪子引擎有兩類設計參數可供設計時的選擇。第一類為幾何設計參數,包括爪子數目,轉子數,轉子半徑,轉子形狀(α角與β角),壁面厚度等。這一類的設計參數會影響到引擎外觀,重量,尺寸,與性能。第二類為性能設計參數,共有五個,分別為壓縮腔與燃燒腔的相位差,掃氣埠打開角度,驅氣埠關閉角度,驅氣埠開啟角度,及儲氣槽體積。這一類的設計參數只會影響系統性能,不會影響引擎外觀尺寸。本研究中針對第一類與第二類性能設計參數做了詳細的分析,以掌握引擎的特性
爪子引擎散熱模式中,主要帶走熱量的方法有三種,由外殼的冷卻水路所帶走的熱量,由爪子內的油路所帶走的熱量,由腔壁的所散失的熱量,在之前的章節已針對於腔壁的所散失的熱量進行探討,本文探討爪子引擎冷卻水流道的散熱效率,以及冷卻水流道管路之間的壓力降。

This research is mainly for discussing the practicability of claw engine conception. It includes performance analysis for claw engine design parameter, establishing user interface as completed cycle mode and the completed cycle mode, and establishing cooling system analysis mode should be executed.
First, by Air Standard Cycle analysis, let air as system operating fluid and simplify system work process to get the system performance and establish the completed cycle mode.
The completed cycle analysis mode is to revise Air Standard Cycle mode and join more processes which will happen when engine's in action, include leakage,combustion,heat transfer,Transition start . The completed cycle calculation as the process of leak and combustion, the calculated range starts from the air into compressor, the compressor exhaust and enter to the buffer then to the combustor, until the burning exhaust is completed.
Completed cycle analysis mode includes leakage model, induction model, combustion model, heat transfer model, and energy balance. Above modes are replete establishing in completed cycle mode.
Establish completed cycle analysis mode could clearly know the all angles characters when the entire claw engine operating, and reduce the assumption value need when analysis to increase the accuracy of forecast engine performance, then estimate the influences of each design parameter to the engine performance
After establishing completed cycle analysis mode, we uses Visual Basic to let the completed cycle analysis mode integrate to be a easy used interface, and all designer could easily choose any design parameter to do the analysis.
Entire claw engine has two kind of design parameter could be selected when design. First category is for geometric design parameter, includes number of claws, number of rotors, rotor diameter, rotor shape, and thickness of compressor and combustor etc. This kind of design parameters could affect the engine outside look, weight, size, and performance.
The other category is for performance design parameter. There are five parameters: phase angle( ),Scavenge air port opening angle( ),purging port closing angle( ),purging port opening angle ( ), and buffer volume( ). This kind of design parameters only could affect the system performance, not engine outside look size. In this research, we have the detailed analysis for these two categories of performance design parameter to grip the engine characters.
In the claw engine heat transfer mode, there are three mainly methods to take off thermal, by the cool waterway on the cover, by oil duct in the claw, or by the wall. In before chapter, we have discussed the heat flux which disappears by the wall. Now we will discuss the heat transfer efficiency by claw engine cool waterway and the pressure decreasing between cool water way.
URI: http://hdl.handle.net/11455/2109
其他識別: U0005-2308200814152600
Appears in Collections:機械工程學系所

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