Search This Blog

Monday, April 17, 2017

PartsAvatar guides you to the mysterious components under car's floorboards- the DriveTrains.

What really happens when you press down the accelerator? How does the driveline get torque? The Drive Train is doing this magic. So check out more about Drive Train and its components @Parts Avatar.

car's Drive train is quite confusing term in itself. The vehicle’s torque converter that is located near the engine converts and transfers the force produced by the engine as you accelerate or decelerate before sending it to the transmission. The gears are changed accordingly and the power is sent to the wheels. This whole process is controlled by the drivetrain.

The concept of drivetrain is often confused with transmission. It is to be noted that both are different terms. Transmission’s function is to keep the engine turning in time with the wheels regardless of the gear it is in. drivetrain is everything behind the transmission that controls the amount of torque being distributed to wheels via engine.
The parts that make a drivetrain are- Axle shafts, U-joints, the differential, the CV joints and driveshaft. Let us read about these components in detail.

Drive Shaft

car's Driveshaft is a long tube made of steel that is linked to the car’s transmission at one end and wheels at the other end. Automobile use shaft to deliver power from transmission to the other end of the vehicle before it goes to the wheels. A pair of short drive shafts is used to send power from differential, transmission and transaxle to the wheels.

U-Joint and Constant Velocity

U-joint is a flexible pivot point that transmits power allowing varying angles of the driveshaft. Constant velocity joints are the parts of the driveshaft that are designed to bend in any direction while continuing to turn the drive wheels at a constant velocity. Both U joints and CV joints transfer power to the components that move with the suspension.

It is advised to follow vehicle manufacturer’s instructions for better maintenance of both joints. Aftermarket auto Ujoints and car's CVjoints are also available at cheap prices at parts avatar, have a look.


Thedifferential of car is the last stop of power before spinning the wheels. In auto mobiles, differential allows the outer drive wheel to rotate faster than the inner drive wheel during a turn.
While taking a turn the outside wheel cut a wider arc than the inside. The differential’s main function is to make sure that the outside and inside wheels are allowed to turn at different speeds while still supplying power to the wheels.

Differential consist of large ring gear that meshes with a small pinion gear driven by the driveshaft. Ring gear also spins a carrier containing perpendicular meshing spider gears that allow the left or right axle shafts to spin independently. Parts avatar offers good quality car's Differential ring and pinion parts.

Axle shafts

Axle shafts are single rotating shafts that deliver power from the final drive assembly to drive wheels.

Symptoms of Failing Drivetrain

  • ·        Vibration and strange noises while shifting gears
  • ·        Muddy and contaminated transmission fluid
  • ·        Whining noise coming under the floor
  • ·        Red fluid leakage under the car

How the Drive train Works?

 As we have understood the components of the drivetrain, now it would be easy to know the working of drivetrain system.

Front Wheel Drive

In the front wheel drive of car, the power flows from engine to the transmission and then to the differential, which is integral to transmission in a front wheel drive. Most front wheel drives are connected to axle half shafts via CV joints for better sheering.
Vehicles working on front wheel drive scenario provide more space for passengers and cargo. As the weight is reduced, the fuel economy also increases so does the engine performance. Due to the weight over the drivewheel, the wet weather traction is also improved.
Vehicles with front wheel drive system often get the problem of uneven wear on front tires and suspension parts. It becomes quite complex for the mechanic to do the servicing due to cramped space of engine compartment. The amount of power that is to be transmitted to the front wheels is also limited.

Rear Wheel Drive

Rear wheel drives use driveshaft to send the power to the back wheels. The engine sends power via driveshaft to the differential unit at the rear axle. The differential turns the power in perpendicular direction and sends it to rear wheels.
The balanced distribution of front and rear weight drive results in better handling. As the weight is distributed evenly, the front tires are not bothered to steer and pull the car hence resulting in less wear and tear of the tire.

The major disadvantage of rear wheel drive is they provide poor wet traction and stability without electronic controls. As compared to front wheel, the space is reduced for passengers and cargo.

Four Wheel drive and All Wheel drive

Power is sent to all four wheels in four wheel drive of car. The transfer case distributes the power to the front and rear differential and is either integral to the transmission or a separate unit.

car's All wheel drivesystem allows the front and rear wheels to rotate at different speeds. There is no room for driver interaction in this type of drive. When the on board computer detects the wheel spinning, all wheel drive is activated immediately. These systems feature less electronic intervention than their part time counterparts.
The major advantage of all and four wheel drive is they provide maximum traction on variety of surfaces.

These systems are quite costly and fuel economy is also not good in this.
Above knowledge is quite sufficient for you. You should research thoroughly about drive trains before buying a vehicle, as handling is the most important thing and steering should be under your control.

If you wish to replace or repair transmission and suspension parts, then visit Parts avatar for better quality.


Post a Comment