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Showing 1 to 3 of 3 for “"variable valve lift"”.
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Development and testing of a variable valve timing system (VVT) for a twincam automotive engine
Variable valve timing (VVT) is an innovative design that enhances automotive engine performance and is important in addressing fuel consumption and emission output concerns. The purpose of the research reported here was to examine the concept of a VVT system because it had the promise of …
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Engine modelling for virtual mapping. Development of a physics based cycle-by-cycle virtual engine that can be used for cyclic engine mapping applications, engine flow modelling, ECU calibration, real-time engine control or vehicle simulation studies.
… piston pin offset on the mechanism. The derived Valvetrain model is capable of representing a variable valve lift and phasing Valvetrain which can be used while modelling most modern engines. A butterfly type throttle area model is derived as well as its rate of change which is believed to be a …
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Möglichkeiten und Grenzen der Teillaststeuerung von Ottomotoren mit vollvariablem Ventilhub
… wird das effektive Potenzial mechanisch variabler Ventiltriebe ermittelt. Dabei bleibt die Verbrauchsverbesserung gegenüber einem gedrosselten Referenzmotor aufgrund sinkender Restgasverträglichkeit als Folge einer nachteiligen Abnahme der Ladungsbewegung hinter den Erwartungen zurück. Im …