How does a Tower Crane Work

How does Gearbox of Car Work

What is the GearBox:

An automobile is propelled by a powerful engine. Unfortunately, the amount of torque generated by engine power is not always sufficient to propel the vehicle, so torque must be increased. 

The lower the revolution of the gears, the greater the torque. The engine torque is changed in transmission systems by reducing or raising the number of rotations per minute. The RPM can be altered by changing the gears: the smaller the gear that drives the larger gear, the slower the rotational speed of the larger gear, and therefore the greater the torque.

Function of Clutch:

A connection between them must be made in order for the engine to move the gears; this connection can be broken if necessary. This is the job of the clutch. By choosing the proper gear ratio, the optimal RPM can be changed. 

When the clutch pedal is released, the engine drives the wheels by turning the input shaft.There is no direct connection between the engine and the gearbox's input shaft while the clutch pedal is depressed.. This enables us to shift gears.

Function of Synchronizer Ring:

Gears must be synchronized, which entails meshing gears moving at the same speed, to prevent grinding and tiresome shifting. It is made feasible via a synchronizer ring. The ring equalizes the rotational speed of a pair of gears and engages them with its adhering surface and sloping edges, resulting in a silent, seamless gear shift. 

Transmission systems:

All the gears in synchronized transmission systems are constantly meshing. The gears on the output shaft revolve on their own bearings while the gears on the countershaft are fixed in place. By attaching the gear in use to the output shaft, the drive can be switched between different pairs of gears.

To Get the Vehicle Moving:

 First Gear:

we shift into first gear. The linkage, with the help of the sleeve attached to it, fixes the first gear on the output shaft. The drive through the input shaft goes from the smallest gear on the countershaft to the largest gear on the output shaft. Since more torque is necessary to start out, first gear has the biggest gear ratio, meaning the smallest gear is in mesh with the biggest one.

 

When the vehicle has reached a certain speed, less torque is required to keep it moving. The ratio of the succeeding gears becomes smaller and smaller, the driving gears and the driven gears are nearing the same size. 

Second Gear:

In second gear, the sleeve fixes the second gear to the output shaft, conducting the driving force through it.

 Third Gear:

In third gear, the sleeve fixes the third gear to the shaft. The drive goes through the third gear on the countershaft and the third gear on the output shaft. The speed is increased, while the torque is being lowered. 

Fourth Gear:

In fourth gear, the speed increases further by lowering torque. In this case, drive goes directly through the input and output shafts. No gears are involved in the transmission. The RPM of the engine's crankshaft equals that of the output shaft - hence, the name direct drive.

Reverse Gear:

In reverse gear, an additional gear is applied between the last gears on the countershaft and the output shaft. It changes the rotational direction of the output shaft, moving the vehicle backwards.

 In lower gear, the car is slower but 'pulls' harder. In higher gear, the vehicle is faster and uses less fuel but has weaker acceleration.

In summary, the gearbox of a car is a complex component that allows the engine to transfer power to the wheels efficiently. By selecting the appropriate gear ratio, the gearbox can adjust the speed and torque of the wheels relative to the engine, allowing the car to accelerate, climb hills, or cruise at high speeds with ease.