Transcript Document 7119711

Cooling System
An automobile’s Cooling system is
to maintain the engine’s temperature
at optimal levels.
Types Of Cooling System
Air Cooling
System
Liquid Cooling
System
Air flows over cooling fins around
the outside of the cylinder and head
by the natural motion of the vehicle.
Air Cooling System
LIQUID COOLING
SYSTEM
Liquid Cooling System
An Liquid Cooling system is the
collection of parts and substances
(coolants) that work together to
maintain the engine’s temperature at
optimal levels.
Liquid cooling system parts
Water pump
Radiator
Thermostat
Fan
Pressure cap
Hoses
Coolant
Liquid Cooling System
Coolant Passage
Water pump
A water pump is a simple device that
will keep the coolant moving as long as the
engine is running. It is usually mounted
on the front of the engine and turns
whenever the engine is running. .
WaterPump
Radiator
Radiator is used to cool the coolant delivered from
the engine.
The radiator core is usually made of flattened
aluminum tubes with aluminum strips that zigzag
between the tubes. These fins transfer the heat in
the tubes into the air stream to be carried away from
the vehicle
Radiator
Thermostat
 The thermostat is simply a valve that measures the
temperature of the coolant and, if it is hot enough, opens
to allow the coolant to flow through the radiator. If the
coolant is not hot enough, the flow to the radiator is
blocked and fluid is directed to a bypass system that
allows the coolant to return directly back to the engine.
Thermostat Valve
Radiator Fan
 The radiator fan has blades that spin rapidly to
provide sufficient air that would cool the engine. It
is usually mounted between the radiator and the
engine so that the air can easily get to the radiator.
Radiator Fans
Radiator Pressure Cap
The radiator pressure cap is a simple device
that will maintain pressure in the cooling system
up to a certain point. If the pressure builds up
higher than the set pressure point, there is a spring
loaded valve, to release the pressure.
Radiator Pressure Cap
Radiator Pressure Cap
Radiator Hose
There are several rubber hoses that make up
the plumbing to connect the components of the
coolingsystem.
The main hoses are called the upper and lower
radiator hoses.
Materials :EPDM(Ethylene propylene diene
monomer), Nitrile rubber & Neoprene rubber
Radiator Hose
Heater Core
In Heater Core hot coolant is
used to provide heat to the interior
of the vehicle when needed.
Heater Core
Coolant
The coolant in today's vehicles is a
mixture of ethylene glycol
(antifreeze) and water. The recommended ratio is fifty-fifty.
Coolant
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