Engine Lubrication Systems Quiz 3

What is the main function of a wet sump in an engine lubrication system?

• Oil is returned from the engine by gravity and carried in a sump below the engine.

• Oil is supplied and returned to a separate oil tank away from the engine.

• The film of lubricant is thick, where no metal-to-metal contact takes place.

• Using the natural movement of the oil 'wedge' to separate the surfaces of highly loaded bearings when shafts rotate.

Which of the following is a correct statement about hydrodynamic lubrication?

• It uses the natural movement of the oil 'wedge' to separate the surfaces of highly loaded bearings when shafts rotate.

• It is a term applied where the film of lubricant is applied by splash and mist.

• It refers to oil which meets the viscosity requirements of several different single-grade oils.

• It is a number which indicates how the viscosity of a liquid changes with temperature.

Which of the following is a type of lubrication system in a motor vehicle?

• Wet sump system

• Dry sump system

• Both A and B

• Neither A nor B

What is the purpose of the oil pressure transducer?

• To filter the oil

• To measure the oil pressure

• To pump the oil

• To restrict the oil flow

What are the two main properties of oil mentioned in the document?

• Body and Flow

• Viscosity and Density

• Thickness and Temperature

• Pressure and Volume

What is the term used to describe the measure of an oil's ability to flow?

• Body

• Flow

• Viscosity

• Density

What is the term for the lubrication where a much thicker layer of oil is present?

What is the main reason a 20W50 grade oil may reduce to a 20W30 grade oil after 6000 miles' engine use?

• The oil evaporates.

• The oil gets contaminated.

• The long-chain viscosity improver additive gets chopped up.

• The oil changes color.

What does a full-flow system mean?

What is the purpose of maintaining close working tolerances in an oil pump?

• To ensure the pump does not overheat

• To supply oil at high pressure

• To reduce the noise of the pump

• To increase the oil capacity