DESIGN, DEVELOPMENT AND ANALYSIS OF DIFFERENTIAL ANTI-REVERSE MECHANISM

A vehicle tends to move in undesired reverse direction, while climbing an inclined slope in heavy traffic or if required to stop and restart the engine, to avoid which the driver has to perform three tasks simultaneously viz. disengaging the brake, releasing the clutch and pressing the accelerator, which becomes a tedious job. To make it easier, we intend to make use of freewheel meshed with the rear bevel pinion of the differential to be called as Differential Anti-Reverse Mechanism-DARM, which can be engaged or disengaged by control on driver’s console. It will prevent the reversal motion of the vehicle in such conditions when engaged, allowing the forward motion regardless its engagement. While doing so we had performed solid modeling in PTC Creo, followed by stress analysis on the model in ANSYS, the results of which are satisfied by theoretical calculations. We had also executed the idea on the physical working model with the help of a bicycle freewheel and a wiper motor and we had got satisfactory results.