Westerbeke 4.0Kw BCDB 50Hz Manual de instalación descargar pdf (Pagina 19)

ENGINE

COOLING

CIRCUIT

DESCRIPTION

Westerbeke marine diesel generators are designed and

equipped for fresh water cooling. Heat produced in the

engine by combustion and friction is transferred to fresh

water coolant which circulates throughout the engine. This

circulating fresh water coolant cools the engine block and its

internal moving parts. The heat is transferred externally from

the fresh water coolant to raw water

by means

a heat

exchanger; similar in function to an automotive radiator. Raw

water flows through the tubes

the heat exchanger while

fresh water coolant flows around the tubes; engine heat trans-

ferred to the fresh water coolant is conducted through the

tube walls to the raw water which is then pumped into the

/---........

.•

exhaust system where finally it is discharged overboard. In

other words, the engine is cooled by fresh water coolant, this

coolant is cooled

raw water, and the raw water carries the

transferred heat overboard through the exhaust system. The

fresh water coolant and raw water circuits are independent

each other. Using only fresh water coolant within the engine

allows the cooling water passages to stay clean and free from

harmful deposits.

NOTE:

Refer

ENGINE COOLANT paragraphs

this

sec-

tion

for

the

recommended antifreeze

and

water mixture

used

the

fresh

water

coolant

and

for

information

filling

the

fresh

water

system.

---

-----

EXHAUST

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',;

{}:

COOLING

CIRCUIT

DIAGRAM

FRESH

WATER

RAWWATER

Engines & Generators

NOTE:

KEEP

PASSAGE

THROUGH

THE

MANIFOLD

CLEAR

PIPE

CLEANER

WORKS

WELL).

NOTE:

ANTI-SIPHON

"-,

VALVE

MAY

REQUIRED

FRESH

WATER

DRAIN

RAW

WATER

DRAIN

1 2 ... 14 15 16 17 18 19 20 21 22 23 24 ... 50 51

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