Design Linkage Mechanism for Electromechanical Continuously Variable Transmission Ratio Controller Used in Motor Cycle

Abstract

Abstract Good ride performance is one of the most important key attribute of a passenger vehicle. One of the methods to achieve this is by using continuously variable transmission (CVT). This is because a CVT has the capability of providing an almost infinite ratio within its limits smoothly and continuously. Motor with automatic transmission known as motor matic is now become widely used as main transportation. Easy to drive is the main reason to choose this type motor cycle. The mechanism of pulley axially movement controller based on centrifugal concept where the ratio of pulley totally depend on speed rotation of input shaft which is in line with the engine shaft. The effect of this system is there is no engine break during decline road condition. So that actually this motor cycle is not suitable for road with extreme decline condition. The purpose of the research is to design mechanism where the pulley movement can be controlled by the driver with the aid of electromechanical system. The design electromechanical of Single Acting Pulley Actuator (EmSAPA) Continuously Variable Transmission (CVT) utilizes combinations of DC motor system, gear reducers and power cam mechanisms to actuate primary movable pulley sheaves on the transmission shaft. The secondary pulley supported by spring provides a belt clamping force to prevent slips, while the secondary controls the rubber v-belt from slipping. This paper is also present comparison on mechanical linkage system which will actuate pulley to move axially.