Development of an Efficient CVT using Electromecanical System
Continuously variable transmission (CVT) is a type of
automatic transmission that can change the gear ratio to any arbitrary
setting within the limits. The most common type of CVT operates on
a pulley system that allows an infinite variability between highest and
lowest gears with no discrete steps. However, the current CVT
system with hydraulic actuation method suffers from the power loss.
It needs continuous force for the pulley to clamp the belt and hold the
torque resulting in large amount of energy consumption. This study
focused on the development of an electromechanical actuated control
CVT to eliminate the problem that faced by the existing CVT. It is
conducted with several steps; computing and selecting the
appropriate sizing for stroke length, lead screw system and etc. From
the visual observation it was found that the CVT system of this
research is satisfactory.
[1] Aaron, R., Roger, R., Zac, H., & Robert, T. (2004). Improved
recreational vehicle continuously variable transmission. Small Engine
Technology Conference and Exposition. Retrieved February 23, 2008.
[2] Garrett, T. K., (2000). The Motor Vehicle (13th ed). Butterworth-
Heinemann: London.
[3] Harris, W. (2005). "How CVTs Work". Retrieved January 27, 2007.
[4] Chen, T. F., & Sung, C. K. (2000). Design of a hybrid chain for the CVT
of light-duty vehicles. International Conference on Gearing,
Transmissions and Mechanical Systems.
[5] Smith, J. H., (2001). An Introduction to Modern Vehicle Design.
Oxford: Butterworth Heinemann.
[1] Aaron, R., Roger, R., Zac, H., & Robert, T. (2004). Improved
recreational vehicle continuously variable transmission. Small Engine
Technology Conference and Exposition. Retrieved February 23, 2008.
[2] Garrett, T. K., (2000). The Motor Vehicle (13th ed). Butterworth-
Heinemann: London.
[3] Harris, W. (2005). "How CVTs Work". Retrieved January 27, 2007.
[4] Chen, T. F., & Sung, C. K. (2000). Design of a hybrid chain for the CVT
of light-duty vehicles. International Conference on Gearing,
Transmissions and Mechanical Systems.
[5] Smith, J. H., (2001). An Introduction to Modern Vehicle Design.
Oxford: Butterworth Heinemann.
@article{"International Journal of Mechanical, Industrial and Aerospace Sciences:64601", author = "A. A. Shafie and M. H. Ali", title = "Development of an Efficient CVT using Electromecanical System", abstract = "Continuously variable transmission (CVT) is a type of
automatic transmission that can change the gear ratio to any arbitrary
setting within the limits. The most common type of CVT operates on
a pulley system that allows an infinite variability between highest and
lowest gears with no discrete steps. However, the current CVT
system with hydraulic actuation method suffers from the power loss.
It needs continuous force for the pulley to clamp the belt and hold the
torque resulting in large amount of energy consumption. This study
focused on the development of an electromechanical actuated control
CVT to eliminate the problem that faced by the existing CVT. It is
conducted with several steps; computing and selecting the
appropriate sizing for stroke length, lead screw system and etc. From
the visual observation it was found that the CVT system of this
research is satisfactory.", keywords = "CVT, Hydraulic Actuator, Discrete shifts,
Electromechanical system, Lead screws.", volume = "3", number = "8", pages = "1022-4", }