HVAC Questions and Answers | New One | Grade A+

thermostat Ans: Is a temperature dep endent valve that opens and closes according to the engine coolant temperature to regulate the flow of coolant through the radiator and back to the engine Coolant Pump Ans: Are mechanically controlled devices that circulate coolant through the radiator and back to the engine. Radiator Ans: Is a liquid to air heat exchanger that reduces coolant temperature by transferring heat from the radiator to the outside air Degas bottle Ans: Is attached to the radiator. It hold excess or overflowing coolant, removes air from the cooling system, allows for expansion and system pressurization, and used to replenish coolant in the system. Coolant Bypass Solenoid Valve Ans: Used to provide a second path for coolant to flow between the engine block and thermostat housing. ( PCM opens the the solenoid valve to increase coolant flow through the block to reduce pressure and temperature fluctuations ) Coolant shut off solenoid valve Ans: Used to control coolant flow to the thermostat housing, coolant pump, engine block, cylinder heads, heater core, turbocharger, transmission oil cooler, and engine oil cooler. The 2014 C-max uses a catalytic converter exhaust manifold with coolant passages to: Ans: raise coolant temperature to expedite passenger compartment heating on hybrid electric vehicles The heater core is an air to liquid heat exchanger similar to a radiator? Ans: False Heater core Ans: Is a liquid to air heat exchanger, air passes through the heater core, heat is transferred from the engine coolant to the air