Transmission Components

Vehicle drive wheel changes speed by transmission

It’s no secret that cars with manual transmission are usually more fun to drive that their automatic equipped counterparts. If you have seen even a passing interest in the act of driving, then the chances have you also appreciated a fine-shifting manual gearbox? From the four-speed basic handbook in a car from the 60’s to the highest Tec six speed in the car of today the principles of a manual gearbox are the same. The driver must shift gear to gear. Normally a manual transmission component bolts to a clutch house in that bolts to the back of the engine. If the vehicle is a front wheel, drive the transmission still attaches to the engine in the similar fashion. 

This is for the reason as the transmission, differential and drive axles are one regarded as one complete unit. In a four wheel drive car, it has also supplied as a part of the front axle for the frontage wheels. The function of any transmission is transferring engine influence to the drive shaft and also to rear wheels. Gears inside the transmission component change the vehicles, drive-wheel momentum and torque to relation to engines momentum and torque. Low gear ratio serves as torque multipliers and helps the engine to develop sufficient power to speed up from a standstill.

Torque and power from the engine come to the front of the transmission componentand rotates the main drive gear, which meshes with the cluster or countershaft gear. A series of gear, forged into one piece that resembles a cluster of gears. The cluster gear assembly rotates anytime the clutch is engaged to the engine which is in running mode, whether or not the transmission is in gear or it is in neutral. In order to mesh the gears and apply the engine power to move the vehicle, the driver presses the clutch and moves the shifter, which in turn moves the shift linkage and fork to slide a gear along the main shaft. Once the gears are meshed the clutch is released and the engine power is sent to the drive wheels. There can be several gears of different diameters and tooth count, and they all rotate at different speeds.

Gears and Shafts

How do couplings transmit power with gears and shafts?

Coupling is a device that is used for connecting two shafts to transmit power. For joining them, some degree of misalignment is required. Proper maintenance and installation of couplings can help you to save a substantial amount and reduce cost and downtime. Gears are large, have high torque density and limited cross section of yoke and cross. Proper installation of gear and shafts can avoid misalignment over a passage of time. Bearings wear down and change its dimension with change in temperature.

The misalignment takes place due to vibrations. There are different types of gears available in the market and it is manufactured according to material, shafts, size and purpose. There are different criteria according to which gears are classified. One common way is the arrangement of gear and shafts. There are three kinds of arrangement of shafts. They are: 

• ·         Parallel shafts

Parallel shafts interlock in the same surface level. They function in such a way that they transfer power of rotational motion between the parallel shafts.  It is efficient enough to provide maximum horsepower and is efficient for long term. It is capable of carrying high load but is little expensive. 

• ·         Intersecting shafts

Intersecting shafts allow smooth transfer of power and motion between the axes. The power machines need speed and strength to handle high load capacity. It is generally used to power hand drills, locomotives, marine applications, etc. 

• ·         Non intersecting or Non parallel axis

These are used on applications that need high ratio speed reduction to provide transmission in a limited area. Also, it has limited load carrying capacity. 

A gear is cylindrical toothed wheel used to transmit rotational motion from one part of the machine to the other. Flexible gear coupling are available in two configurations- full gear and half geared half-rigid. Full-geared couplings have capability to accommodate both offset and angular misalignment while the half-geared half-rigid coupling has single rigid hub to take care of angular misalignment. When two or more gears work together, the connection between the gears allows flow of power from one gear shaft or axle to the other. Therefore, both gears and shafts are dependent on each other.