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Direct Drive Transmission

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(Redirected from direct drive)
Mechanical Features and Designs

The direct drive transmission system is designed to improve the shifting of gears within the gearbox of a motor vehicle. The direct drive system allows for better cruising at higher gears due to fewer gears connecting.[1]

[edit] How it Works

Essentially, the direct drive system provides a shift controller that functions alongside the clutches in order to maintain good connection between the shifting of gears in a gear box. There are two countershafts required in the gearbox for the direct drive system to function, an input countershaft and a second input countershaft.[2] Once the main shaft begins to rotate these intermediate shafts, their rotation within the gearbox is managed directly by a motor that controls the shifting. This allows for an even gear ratio during the rotation of gears, such as a 1:1 gear ratio.[3] The motor not only keeps the rotation of the two input countershafts going, but it also keeps the speed of the rotation consistent, allowing for smoother shifting between gears.[4] This way, power can move directly to the back wheel of the vehicle through the motor, due to a smoother functionality within the gearbox.

[edit] References

  1. Bikernet website. April 24, 2009.
  2. Free Patents Online website April 24, 2009.
  3. Today's Trucking website April 24, 2009.
  4. Heavy Equipment Forum website. April 24, 2009.