« Back to Dictionary Index

The term “transmission” has different meanings depending on the context in which it is used:

  1. Automotive Component: In the context of automobiles, a transmission is a critical component that allows the vehicle to move forward and backward with varying amounts of power to suit different driving conditions. There are two main types of automotive transmissions:
  • Manual Transmission: Operated by a driver-controlled clutch and gearshift mechanism, manual transmissions require the driver to manually engage and disengage gears to change speed ratios.
  • Automatic Transmission: Controlled by hydraulic pressure and electronically controlled systems, automatic transmissions shift gears automatically based on driving conditions such as speed, load, and throttle position.
  1. Mechanical Device: In a broader mechanical sense, a transmission refers to any device containing gears that are used to change the ratio between engine revolutions per minute (RPM) and driving wheel RPM. This allows for the adjustment of torque and speed output to suit various driving situations.
  • Gearing or Torque Conversion: By altering the gear ratios, a transmission can either increase torque output at the expense of speed (lower gear) or increase speed at the expense of torque (higher gear).
  1. Heat Transfer: In the realm of building construction and energy efficiency, “transmission” refers to the transfer of heat between the interior and exterior of a building through components such as windows, walls, floors, and roofs. This heat transfer can result in either heat loss during colder weather or heat gain during warmer weather, affecting the building’s overall energy efficiency and comfort level.

See Related Terms:

Related Articles:
Alternative Meanings:
  • Transmission

    A gearbox with a number of selectable ratios, used to match the engine's rpm and torque to differing vehicle requirements.

« Back to Dictionary Index