Ch12 Cooling Systems

What senses the temperature of the coolant and allows the fluid to enter or exit the radiator?

• radiator hose

• water pump

• thermostat

• radiator cap

What happens when pressure is increased in the cooling system by using a radiator cap?

• increases the boiling point of the coolant

• decreases the boiling point of the coolant

• keeps the boiling point constant

• changes the water to antifreeze ratio in the coolant

What is used to attach the radiator hose to the radiator?

• clamp

• glue

• tape

• machine screw

Approximately what temperature will the antifreeze freeze if mixed 50% water and 50%

antifreeze?

• 212 F (100 C)

• 122 F (50 C)

• 32 F (0 C)

• -34 F (-37 C)

Which of the following is like a mini radiator to help with heating the passenger cabin?

• cabin air filter

• heater core

• compressor

• evaporator

What forces the coolant to flow throughout the engine?

• air from the front of the car

• water jacket

• radiator fins

• water pump

What is the purpose of the radiator?

• remove heat from the coolant

• add heat to the coolant

• slow down the air through the engine compartment

• keep the coolant at 195oF (91oF)

Charge-air coolers (intercoolers and aftercoolers) are air-to-air or air-to-liquid ____________.

• heat collectors

• heat exchangers

• cold air returns

• hot air returns

Cooler air is ____________, allowing more air and fuel to go into the combustion chamber

which leads to more power.

• more turbulent

• cloudy

• less dense

• denser

What is the function of active grille shutters?

• to improve aerodynamics and control airflow through the radiator

• slow down the vehicle

• to shut off air to the passenger’s cabin

• to get the engine coolant as cold as possible