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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Variable cycle three-stroke engine ： ウィキペディア英語版 Variable cycle three-stroke engine A Variable cycle three-stroke engine is a type of internal combustion engine, patented by Michael A. V. Ward, US patent 5454352 dated Oct 3, 1995. Although the engine runs on the four-stroke cycle, the cycle is completed in one revolution of the crankshaft, as in the Atkinson cycle engine. However, this is achieved by the use of an elliptical cam instead of the jointed linkage used in the Atkinson engine.The three stroke engine does not exist in reality but according to the patent this cycle can be termed as 3 stroke. In real it is a 2 stroke engine. The term "three-stroke" indicates that, to quote from the patent, "total cycle displacement (of) the engine equals approximately three expansion ratios". ==Overview== The aim of the invention is to improve the emissions characteristics and efficiency of the internal combustion engine by reducing throttling and pumping losses. The patent states: "Other methods of reducing pumping loss rely on variable valve timing, as in the Miller cycle...these are only partially succssful because they still employ a full intake and compression stroke with the accompanying mechanical frictional losses". In the engine proposed by Ward, the intake stroke is physically shorter than the expansion stroke.〔US patent 5454352〕 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Variable cycle three-stroke engine」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.