Engine Cooling System and HVAC

This part is vital to a car engine's operation because it ensures the coolant keeps moving through the engine block, hoses and radiator, and maintains an optimum operating temperature.

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This is like a gate that remains shut until the coolant reaches a set temperature, at which point it opens and lets coolant pass. Its basic function is to allow the engine to warm more quickly.

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This is used to measure the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.

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What is the function of a Radiator?

• It measures the temperature of the coolant/antifreeze mix in the cooling system, giving an indication of how much heat the engine is giving off.

• Its function is to store excess coolant fluid until required. You can locate the reservoir by following the hose from the radiator.

• It ensures the coolant keeps moving through the engine block, hoses and radiator, and maintains an optimum operating temperature.

• It transfers heat from the hot coolant that flows through it to the air blown through it by the fan.

The _______ is a vital component of the cooling system. Its function is to store excess coolant fluid until required. You can locate the reservoir by following the hose from the radiator. Choose the best answer.

• Coolant Reservoir

• Expansion Tank

• Coolant Recovery Tank

• (All options are correct because they all mean the same thing.)

This is the heart of the A/C system. Driven by the serpentine belt, it pressurizes the refrigerant that cools the air. It also senses temperature changes

• Condenser

• Radiator

• Compressor

• Vents

Like a miniature radiator that is usually found in front of the actual radiator, it turns hot refrigerant gas into a condensed cooler refrigerant liquid.

• Compressor

• Condenser

• Evaporator

• Precipitator

Also called the Orifice Tube, its job is to constantly monitor the pressure and temperature of the A/C system to determine the exact amount of refrigerant that can safely enter the evaporator.

• Refrigerator

• Coolant Reservoir

• Expansion Tank

• Thermal Expansion Valve

The safety net responsible for trapping all harmful debris, moisture, and liquids from reaching the compressor and other vital parts of the A/C system. It separates gas from liquid, removes moisture, and filters out contaminants.

• Receiver/Drier

• Air Filter

• Cabin Air Filter

• Cold Air Intake

Whereas the engine's air filter ensures clean air gets to the engine, the _____ stops contaminants such as dirt, dust, smoke, smog, pollen, mold spores, and exhaust gases from entering the cabin of a vehicle through the heating, ventilation, and air conditioning (HVAC) system.

• Receiver/Drier

• Air Filter

• Cabin Air Filter

• Cold Air Intake