Published Paper Details:

The heat generated in CVT during high load conditions is huge and leads to high thermal loads. Particularly, rubber belt suffers from high temperature peaks and their life span reduces significantly. Thus, expansion of belt due to heating results in loss of transmission efficiency and less durability of CVT parts. Thermal analysis had been carried out in the earlier researches which calculate the temperature of the belt and the pulley. During running condition, CVT temperature may exceed 150 ?C which then reduces lifespan of the rubber belt. Thus, sufficient cooling must be provided to CVT. Being a delicate task for open CVT system, it becomes even worse for enclosed CVT system. But enclosing of CVT is required in order to protect the system from dust, mud and water to avoid belt slipping. Computational fluid dynamics (CFD) approach is used to analyze the temperature distribution of pulley and belt. The problem is being solved using steady-state method since transient approach is not feasible. Transient simulation increases the computational time as well as cost. In our work, our focus is on increasing the life span of belt by maintaining the belt temperature at or below 150 ?C. Proper analysis were carried out to study the flow behavior of the air inside of CVT casing. Thus our aim is to design a closed CVT casing to increase the flowrate of air for cooling the belt as well as pulleys.