Cooling Systems What does the cooling system do? What happens if an engine runs too cool or too hot? What are the Types of Cooling Systems?
Thermal Dynamics A camp fire explains it all! Convection Radiation Conduction
Heat Transfer Continued Only 1/3 of heat produced in an engine is actually used. Where does the remainder go? What are some “very good” and “good” heat conductors? How much energy do you radiate? What is ambient air temperature? Thermal Dynamics in relation to material’s surface condition. Thermal Dynamics in relation to color.
Liquid Cooling Systems What do coolants do for an engine? Freezing Point? Boiling Point? Anti-Freeze or Anti-Boil? What makes-up a coolant?
Liquid Cooled Systems - A pressurized closed circulation system How it Works: Liquid Cooled Systems - A pressurized closed circulation system
Parts of a Liquid Cooling System Radiator & Pressure Cap Fan & Belt Coolant Pump Water Jackets Thermostat Hoses Coolant
Radiator & Pressure Cap Radiators: Types: (2) Testing & Repair: (2) How does the radiator work? Pressure Cap: Functions: (2) How a pressure cap works:
Pressure Cap & Overflow
Fan & Belts What function does the fan serve? Types of fans? What can the fan belt do for the engine’s cooling system?
Coolant Pump Definition: The water pump is the heart of the cooling system. Sealed lubrication for the pump bearings, why?
Merry-Go-Round
Water Jackets Passageways through which water circulates through the block.
Thermostat Purpose of a thermostat? Importance of a thermostat? How does a thermostat work? Practical thermostat information:
Testing a Thermostat
Minor System Parts Hoses: Filters: Purpose of Hoses: Inspecting hoses, what do you look for? Installation of hoses? Filters: Jobs a filter can perform:
Coolant Four Properties of Coolant: (4) Mixing antifreeze and water: Water Type? Mixture Percentage Antifreeze Specifics: Selection Temperature Testing Flushing
Air Cooled Engines How do they work? Parts: Maintenance: Fins Shroud Fan Pre-Cleaner Maintenance:
General Cooling System Tips