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Question

Difficulty: EasyLubrication System

In an automotive engine's lubrication system, which component is responsible for drawing motor oil from the oil pan and circulating it under pressure to internal moving parts?

  1. A
    Alternator
  2. Oil pumpAnswer
  3. C
    Thermostat
  4. D
    Fuel injector

Answer

The oil pump is the component responsible for drawing oil from the pan and circulating it under pressure throughout the engine.
The oil pump is the heart of the engine's lubrication system. Driven mechanically by the crankshaft or camshaft, it pulls oil from the oil pan through the pickup screen and forces it under pressure through the oil filter and engine galleries to the crankshaft bearings, camshaft, and valve train.

Step-by-Step Solution

1
Identify the primary mechanical requirement described in the question.
The requirement is drawing liquid lubricant from the reservoir (oil pan) and pressurizing it for distribution to engine components.
Internal engine components require pressurized hydrodynamic lubrication to prevent metal-to-metal friction.
2
Match the requirement with the correct automotive system component.
The oil pump is the dedicated positive displacement pump designed specifically for engine oil circulation.
Other listed components belong to the electrical, cooling, and fuel systems respectively.

Key Concept

Engine Oil Circulation and Pump Operation
Estimated Time:45s
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Topics

Lubrication System

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