Bewise Inc. www.tool-tool.com Reference source from the internet.

汽缸本體是引擎的基本架構,上方緊接著汽缸頭,而下方則接著曲軸箱。汽缸本體也是引擎"下半座"的主要部份。

[編輯] 材質

汽缸本體是鑄造(壓 鑄法或是翻沙鑄模法)而成,材質通常為鋁或是鐵,因此又有了鋁合金汽缸和鑄鐵汽缸之分。鑄鐵汽缸較鋁合金汽缸來的重得多,一般認為鑄鐵汽缸的強度比鋁合金 汽缸強,尤其是在強制進氣情況下,如渦輪增壓,鑄鐵的材質會比較耐用。但其實這跟缸套的材質與設計才最有關係。汽缸的內襯(cylinder liner),中文稱之為缸套,只有薄薄的一層,通常採用球墨鑄鐵(或稱延性鑄鐵,ductile iron)製成,負責跟活塞環直接接觸,在汽缸本體鑄造成型後,加工壓入其內。也有僅用鋁合金製成和熱處理加工而沒有缸套的汽缸。或是利用鎳基複合電鍍技 術鍍上一層薄膜來取代缸套,這俗稱為陶瓷汽缸

[編輯] 冷卻

空冷引擎的汽缸本體上佈滿散熱鰭片,以利散熱。水冷式引擎則在缸套周圍佈滿水道(water jacket),讓冷卻水通過。根據水道的開放程度,又有所謂的開放式水道(open deck)以及封閉式水道(close deck)之 分。若水道環繞缸套,使汽缸在汽缸床部分沒有任何接觸的支撐點,稱之為開放式水道。若汽缸床能跟汽缸相接並支撐缸體,則稱之為封閉式水道。開放式水道由於 汽缸頂部沒有任何支撐,一般認為跟封閉式水道相較之下,強度略嫌不足。當缸內壓力超過原廠設計的界限時,汽缸可能移位,甚至破裂。它的好處則是冷卻水在流 通過汽缸床時較無阻礙,冷卻效果佳(越靠近汽缸床, 其工作溫度也就越高)。開放式水道的設計,也跟鑄造本體時所採用的壓鑄法有絕對的關係。封閉式水道的汽缸本體則都採用翻沙鑄模的方式鑄成。


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Welcome to BW tool world! We are an experienced tool maker specialized in cutting tools. We focus on what you need and endeavor to research the best cutter to satisfy users demand. Our customers involve wide range of industries, like mold & die, aerospace, electronic, machinery, etc. We are professional expert in cutting field. We would like to solve every problem from you. Please feel free to contact us, its our pleasure to serve for you. BW product including: cutting toolaerospace tool .HSS Cutting toolCarbide end millsCarbide cutting toolNAS Cutting toolCarbide end millAerospace cutting toolФрезерыCarbide drillHigh speed steelMilling cutterCVDD(Chemical Vapor Deposition Diamond )PCBN (Polycrystalline Cubic Boron Nitride) Core drillTapered end millsCVD Diamond Tools Inserts’PCD Edge-Beveling Cutter(Golden Finger’PCD V-Cutter’PCD Wood tools’PCD Cutting tools’PCD Circular Saw Blade’PVDD End Mills’diamond tool Single Crystal Diamond Metric end millsMiniature end millsСпециальные режущие инструменты Пустотелое сверло Pilot reamerFraisesFresas con mango PCD (Polycrystalline diamond) FreseElectronics cutterStep drillMetal cutting sawDouble margin drillGun barrelAngle milling cutterCarbide burrsCarbide tipped cutterChamfering toolIC card engraving cutterSide cutterNAS toolDIN toolSpecial toolMetal slitting sawsShell end millsSide and face milling cuttersSide chip clearance sawsLong end millsStub roughing end millsDovetail milling cuttersCarbide slot drillsCarbide torus cuttersAngel carbide end millsCarbide torus cuttersCarbide ball-nosed slot drillsMould cutterTool manufacturer.

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