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The utility of tractors in India has grown and is growing. Other than in agricultural area, it finds use in non-agricultural and construction/ earthmoving applications like loaders, dozers, power source, etc. The tractors that are subjected to heavy duty cycles are mostly with conventional dry type clutches. These types of dry clutch when operated in heavy application generate large amount of heat within shorter period of time on the surface of friction discs. This increase in disc surface temperature weakens the friction material property & bonding element leading to deterioration and decreasing the life of clutch. This curtails the clutch life extensively and is a big challenge to farmers and tractor users. The frequent clutch failures not only increases the operating cost, but also the servicing of clutches in the tractor fitted with heavy attachments leads to a higher downtime and service cost.

In any drive system, tooth mesh misalignment originates primarily from its torque transmitting components such as spline connections, gears, shafts, bearings and housing. The major influencing factors for tooth mesh misalignments are clearance between components, deflection, stiffness, thermal expansion, manufacturing limitations and assembly limitations. Tooth mesh misalignments in heavy duty off-highway applications like tractor, propagates drastically while handling severe loads and tends to shift the load distribution in a gear pair to an un-biased manner along the facewidth, resulting in high contact stresses and poor transmission performance. Misalignments definitely add few more decibels to the driveline system which will be an annoyance to the user. Moreover, mesh misalignments in any drive system cannot be eliminated and hence different approaches and methods were followed to compensate the misalignment.

The scope of tractor usages are widely expanding to various non-agricultural and construction/earthmoving applications like loaders, dozers etc. The tractors with manual transmission driveline subjected to such heavy duty cycles are having conventional dry type clutches in general. These types of dry clutch when operated in such heavy application generate large amount of heat within shorter period of time on the surfaces of friction discs. This increase in disc surface temperature determines not only the level of the friction but also the rate of wear and durability. Number of clutch operation per minute for this application is also increasing to meet the improved productivity requirements. Analysis shows that the rate of heat removal from the friction disc through oil flow system is higher compared to oil immersion type. In this work, an oil spatter concept is designed to provide active circulation of oil to the multi disc clutch during engaged conditions.