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5 LABORATORY WORK № 2
COOLING SYSTEM OF THE INTERNAL
COMBUSTION ENGINE
5.1 The purpose of the work. Studing purpose and
general structure of the cooling system of the engine, the design
of individual units of the system and the methods of removing
heat from the hottest parts.
5.2 Knowledge and skills. As a result of laboratory
work the student must know:
- designation and classification of cooling systems for heat
engines;
- main types of coolants of cooling systems and their
characteristics;
- methods of supplying the working body of the cooling
system to the heated parts;
- purpose and general structure of elements of the cooling
system (fans, pumps, thermostats, radiators).
After performing the laboratory work the student must
be able to:
- to recognize and determine the location of the engine of
the cooling system units;
- to give the principal scheme of the cooling system of the
engine;
- determine the theoretical feed of the pump, the fan;
- Perform sketches of parts of the cooling system nodes.

5.3 General Terms and Conditions. In the process of
combustion of fuel, the temperature of gases in the inner cavity
of the cylinder can reach 2200 - 2700 С at an average
temperature during the operating cycle of 600 – 1100 С.
Accordingly, the temperature at the interface between the
engine parts (piston, cylinder and its heads, valves, candles ...)
increases with combustion products. The natural response of

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