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Manual transmission is one of the key system of power-train to which driver directly interacts, so its shift feeling is important for the merchantability. The importance of the gear shift quality of manual transmissions has increased significantly over the past few years as the refinement of other vehicle systems has increased and also due to rise in customer expectations. Shift Tower is a system to assist the driver during selecting and shifting of Gears. The dynamic interaction of shift Tower at a component level is difficult to interpret by traditional test methods and virtually impossible at concept stage. To overcome these difficulties a dynamic model of the entire Shift Tower mechanism i.e. Shift select lever, 3D Ramp, Detent Pin, Spring, Interlock mechanism has been created. The model predicts the gearshift quality i.e. Shift and Select force values for a given set of input parameters, which can be correlated against test data.

In a car with a Manual Transmission, Gear Knob is the main touch point for the driver to interact with vehicle control system. Therefore, Gear Shift Quality of vehicle is very important from customer point of view. With growing competition, even in a cost sensitive market like India, importance of the gearshift quality of manual transmissions has increased significantly over the past few years. In Manual Transmission, shift tower is a system to assist the driver during selecting and shifting of gears. Diagonal Shift Assist (DSA) is a part of shift tower, which guides the gear shift from 5th gear to 4th gear and act as a safety device to prevent 5th to reverse gear engagement. The dynamic interaction of DSA system in shift tower is difficult to interpret by traditional test methods and virtually impossible at concept stage.