DAILY ONE INFORMATION

                                    Gear Box Function of gear box An automobile is able to provide varying speed and torque through its gear box. Various functions of a gear box are listed below; 1. To provide high torque at the time of starting, vehicle acceleration, climbing up a hill. 2. To provide more than forward speeds by providing more than one gear ratios. In modern cars, five forward and reverse gear is provided. For given engine speed, higher speed can be obtained by running in higher 4 th and 5 th gears. 3. Gear box provides a reverse gear for driving the vehicle in reverse direction. Types of gear boxes 1.     Selective type gear boxes: (i)             Sliding mesh gear box (ii)     ...

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 ...

Multiplate clutch Multiplate clutch are used for large trucks and racing cars where high torque transmission is necessary but the diameter is limited. These are also used in automatic transmission and motor cycles. In this type of clutch a number of clutch a number of parallel discs of metal and friction material are arranged to transmit the drive. In comparison to the single plate type these are smoother and easier to operate. The increased number of plates/friction discs provide the increased torque carrying ability thus making it suitable for use on heavy commercial vehicles and special purpose military and agricultural vehicles. These clutches may be dry or wet. Multiple Dry Clutch A multiple dry clutch has its different plates lined with a frictional material similar to that used in case of a single plate clutch. Cork inserted multiplate clutches are used in motor cycles while those with metal plates are used in tractors or other light powered engine vehicles. To avoid s...

                      Centrifugal clutch Intro Centrifugal clutch is mainly used in automatic gear system .compare to other clutch types its costly   but it has more advantages then other system. Working The centrifugal clutch automatically disengages itself when the speed falls below and engages when the speed rises above a pre-set value. centrifugal bob-weight are positioned in such a way that the centrifugal forces exerted by them with the clutch rotation result in the release levers due to the outer end of the release lever moving towards the flywheel . This results in the proportionate increase of centrifugally generated pressure with the increase of engine speed. Therefore at low engine speeds only the spring pressure acts, while at high engine speeds the force generated by the weights supplements the spring pressure. Thus smooth and acceptable gear changes...

                                Centrifugal force Why I’m suddenly jumped to force you may get confused .so don’t get into anything my next topic is centrifugal clutch so that the reason I’m telling about this force ok now we see   what its?? Centrifugal force meaning center and f ugere meaning to   flee the force that draws a rotating body away from the center of rotation .it is caused by the inertia of the body’s path is continually redirected.

Types of clutches In my previous post I discussed about the clutch mechanism and what is clutch so here I don’t want to waste your time, so here I’m going to tell about types of clutches briefly clutches are basically classified according to their construction and performance different types of clutches are 1.        Multiple plate clutch 2.        Single plate clutch 3.        Wet vs. dry 4.        Centrifugal 5.        Cone clutch These are the major types of clutches 1.    multiple plate clutch Multiplate   are mainly used in large trucks and racing cars if torque transmission is necessary but the diameter is limited these are also used in automatic transmission and motor cycles in this type of clutches a number   of parallel discs of metal and friction material are arranged to transmit the driv...

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...

Flywheel The flywheel is a disk or wheel attached to the crank, forming an inertial mass that stores rotational energy. In engines with only a single cylinder the flywheel is essential to carry energy over the power stroke into a subsequent compression stroke.   Flywheel mostly present in reciprocating engines to smooth out the power delivery over each rotation of the crank and in most automotive engines also mounts a gear ring for a starter. The rotational inertia of the flywheel also allows a much slower minimum unloaded speed and also improves the smoothness at idle .the flywheel may also perform a part of the balancing of the system and so by itself be out of balance although most engines will use a neutral balance for the fly wheel ,enabling it to be balance in a separate operation. The flywheel is also used as a mounting for the clutch or a torque converter in most automotive applications. Material Flywheel   are typically made by steel and also carbon fiber is u...