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Question

Difficulty: EasyCooling System

Which component in an automotive liquid cooling system is mechanically driven by the engine to continuously circulate coolant through the engine block, cylinder head, and radiator?

  1. A
    Alternator
  2. Water pumpAnswer
  3. C
    Thermostat
  4. D
    Intake manifold

Answer

Water pump
The water pump is the central circulation component of a liquid cooling system. It is mechanically driven by an accessory drive belt or timing belt and uses an impeller to force coolant through the engine block water jackets, cylinder head, and radiator core.

Step-by-Step Solution

1
Identify the primary mechanical device that moves liquid coolant through an engine's passages.
The water pump contains an internal impeller driven by the engine crankshaft via a belt or chain to create fluid flow.
Coolant cannot transfer thermal energy from the combustion chambers to the radiator without active circulation.

Key Concept

Coolant circulation driven by the water pump
Estimated Time:45s
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Topics

Cooling System

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