Requirements and the main functions of the transmission system
Vehicle transmissions mediate between the engine and the drive
wheels. The transmission adapts the power output to the power requirement by
converting torque and rotational speed. The power requirement at the drive
wheels is determined by the driving resistance
The
four main functions/ requirements of a transmission system are
- Enable
the vehicle to move-off from rest.
- Adapt
power flow. Convert output torque and output speed. Enable reverse motion.
- Enable
permanent power transmission. Positive or force locking engine power
transmission with minimal loss.
- Control
power matching.
In
addition to these four main requirements/functions, there are ancillary
transmission requirements also known as operational requirements. These are
- operational
reliability
- gear
box cost
- ease
of operation
- power
matching
- efficiency
- installation,
dimension and weight
- customisability
- emission
(noise, oil etc)
