Automobile Engineering in ME
The function of a radiator fan in the cooling system is that

It is turned by wind force as the vehicle moves forward, and its rotation drives the water pump
It draws heat out of the engine compartment
It blows air through the radiator when necessary
It cools the engine by blowing air onto the cylinder block

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Automobile Engineering in ME
The major purpose of an electronically controlled automatic transmission is that this type of transmission

Reduces the number of automatic transmission components
Eliminates gear clutches
Eliminates the gear shaft lever
Reduces shift shock and achieves more efficient transmission of engine torque

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Automobile Engineering in ME
The ball joints are used on the tie rod ends, because they

Improve the force transmission speed
Reduce the amount of noise generated
Can deal with movement of the suspension both vertically and in other directions
Reduce the amount of sliding resistance

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