Rev limiter  From Wikipedia, the free encyclopedia Jump to:
navigation, search  A rev. limiter is a device fitted to an
internal combustion engine to restrict its maximum rotational
speed. This is usually carried out to prevent damage to the
engine, however sometimes these devices are fitted to prevent an
engine reaching the point at which it develops maximum power.
This may be useful in a driving school car or similar, or
utilised in systems preventing valet parking operatives from
joy-riding in high-performance vehicles placed in their charge.
When fitted to racing or modified street cars these adjustable
devices provide more precise control than the original
components built in by the manufacturer. Limiters can be used in
conjunction with a shift light, which illuminates when the
desired RPM is reached, indicating to the driver that a gear
change is required. This allows the driver to keep his eye on
the road and not have to glance repeatedly at the tachometer to
monitor the engine speed.   Limiters preven