Understanding Engine Lubrication Systems

This video tutorial explains the importance of lubricating oil in reducing friction between engine components. It details the process of oil circulation, including the role of the oil pump, filter, and bypass valve. The tutorial also covers how the oil pressure is regulated and the function of the dashboard oil warning system, ensuring the engine operates efficiently and safely.

Why is lubricating oil necessary in engines?

• To clean the engine

• To cool the engine

• To reduce friction between components

• To increase engine speed

What happens when engine components rub against each other without lubrication?

• They become more efficient

• They become quieter

• They produce more power

• They wear out and lose power

How does lubricating oil reduce friction?

• By forming a layer between components

• By cooling the components

• By cleaning the components

• By increasing component speed

What is the purpose of the dipstick in an engine?

• To increase oil pressure

• To clean the oil

• To check oil level

• To measure engine temperature

What does it mean if the oil level is below the 'L' mark on the dipstick?

• The oil level is too low

• The oil is dirty

• The oil level is too high

• The oil level is optimal

What is the function of the oil filter in the lubrication system?

• To increase engine speed

• To cool the oil

• To filter out dirt and particles

• To increase oil pressure

What happens if the oil filter is clogged?

• Oil flow stops completely

• Oil bypasses the filter

• Oil becomes cleaner

• Oil pressure increases

What is the role of the relief valve in the lubrication system?

• To increase oil flow

• To maintain constant oil pressure

• To clean the oil

• To cool the engine

What does it indicate if the oil warning light stays on after the engine starts?

• The engine is overheating

• There is a failure in the lubrication system

• The oil is too clean

• The oil level is too high

How does the oil pressure switch function in the warning system?

• It increases oil pressure

• It turns off the warning light when pressure is sufficient

• It cleans the oil

• It cools the engine