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Showing posts with the label transmission

Constant mesh gear box

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Constant mesh gear box In this gear box, all gears on the main transmission shaft are constantly connected to corresponding gears on counter shaft or lay shaft. In addition, two dog clutches are provided on the main shaft. One dog clutch so between the second gear and cutch gear and another is between the first gear and reverse gear. Splines are out on main shaft so that all the gears are feed on it. Dog clutches can also slide on main shaft and rotate with it. However, all the gears on counter-shaft are giddily fixed to it. Different gear ratios are obtained as follows: For three forward and one reverse gear Top or 3 rd speed gear is obtained when the left dog clutch is slided to left to mesh with clutch gear by using the gear shift lever. In this case, main shaft rotates at the maximum speed. Speed ratio obtained is 1:1. Second gear is obtained when dog clutch meshes with second gear. In this condition clutch gear rotates the drive gear on counter shaft and counter...

Resistance during vehicle moving condition

Resistance during vehicle moving condition: The moving vehicle has to overcome the following resistances: 1.     Air or wind resistance, 2.     Gradient resistance, and 3.     Rolling resistance. Air resistance Is the aerodynamic drag experienced by the vehicle while moving and depends upon the frontal area of the vehicle speed and the speed of the vehicle. Gradient resistance Depends u[on the weight of the vehicle and the steepness or the grade of the road. It is independent of the speed of the vehicle. Rolling resistance Is the resistance to rolling occurring due to the deformation of road and tyre and the losses occurring due to the dissipation of energy in the tyre. The factors which affect rolling resistance are mainly the inflation pressure of the tyre design. The effect of speed is rather negligible . How overcome these resistances? To overcome this high torque is required at the driving wheels when a vehicle ...

CLUTCH

CLUTCH Clutch is a mechanical device it’s one the major part in transmission power system .it provides for the transmission of power from one component to another component, its placed in between the flywheel and gear box .Next to the flywheel and before to the gear box transmit power during engage condition main purpose of the clutch is control the amount of motion whenever it needs, Mechanism of clutch It’s the simplest mechanism connect and disconnect two rotating shafts (drive shafts or line shaft).One shaft attached to motor or engine which provides power its input shaft (driving member)and the other shaft gear box etc.(the driven member)provides output power of work. Clutch is an unit it contains main parts inside into it Material used for clutch As i already said clutch is a unit it contains many parts each parts are made with different materials .The outer case of the clutch is made up of cast iron, please wait for my next post so you can get to know more about clutc...