Thermodynamic Analysis Of Variation Of Opening Angles Of Continuous Variable Valve Timing System

Document Type : Research Article

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Abstract

Continuous Variable Valve Timing System or CVVT has a duty of variation of continuous open timing of the valves. This system has been put on the intake camshaft in EF7 engine. In this article, thermodynamic analysis of variation for open selective angles of valve according to variation of engine speed and load has been investigated. Opening angles in two state of gas and gasoline fuel by selecting of best point on the basis of data results of engine test has been achieved and this article analyses of the cause of this selection from thermodynamic point of view.

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[1] دکتر اخلاقی مهدی ; "طراحی موتورهای پیستونی ". انتشارات بهرام 1363
[2] مهندس میرسلیم سیدمصطفی; کشاورزیان محسن;" زمانبندی متغیر دریچه ها" دانشگاه صنعتی . امیرکبیر مقاله درس موتورهای پیشرفته 1386
[3] able Valve Actuation2002/SAE SP-1692
[4] modynamic Analysis Of Variable Valve Timing Influence On SI Engine Efficiency/ Davide moro & Fabrizio Ponti / University of Bolonga Italy / SAE Technical Papers /2001-01-0667
[5] g he 2nd Law Of Thermodynamics to Obtimize Variable Valve Timing for Maximizing Torque in a Thottled SI Engine/T.Kohany&E.Sher/Ben Gurion University/ SAE Technical Papers/1999-01-0328

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