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When the engine is cool or even at normal operating temperature, the fan clutch partially disengages the engine's mechanically driven radiator cooling fan, generally located at the front of the water pump and driven by a belt and pulley connected to the engine's crankshaft. This saves power, since the engine does not have to fully drive the fan.
On modern vehicles, further regulation of cooling rate is provided by either variable speed or cycling radiator fans. Electric fans are controlled by a thermostatic switch or the engine control unit. Electric fans also have the advantage of giving good airflow and cooling at low engine revs or when stationary, such as in slow-moving traffic.
This is a list of auto parts, which are manufactured components of automobiles.This list reflects both fossil-fueled cars (using internal combustion engines) and electric vehicles; the list is not exhaustive.
In most applications, the Type 1 engine came with an upright cooling shroud and a belt driven fan. When equipped with crank mounted cooling fan, the Type 1 engine may be referred as Type 3 engine. These engines came only in 1500 cc and 1600 cc configurations in Volkswagen Type 3 based vehicles.
For better cooling, a new, variable speed electric cooling fan replaced the two-speed unit, and the power steering fluid reservoir was now mounted to the fan shroud. In a minor change, an accessory belt shield was fitted to the front of the engine, and a new engine cover that featured a silver "V8" emblem was introduced.
Ducted fans are used for propulsion or direct lift in many types of vehicle including airplanes, airships, hovercraft, and powered lift VTOL aircraft. The high-bypass turbofan engines used on many modern airliners is an example of a very successful and popular use of ducted fan design.