area.
The other water flows vertically as:ablut 25% water flows
to
the exhaust mani-
fold side
,30%
water flows to the end
of
the cylinder
head
and
the oter
100/0
water
maybe
short circuit.
This
layout of cooling water determined by the layout of water
holes and their sizes ensures the whole cylinder be cooled evenly
and
effectively.
The
used cooling water
all
flows back into the upper water case
of
the radiator
through the thermostat from the front end of the cylinder head. When the water
flows through the radiator, it
is
cooled with the air breathed
in
or the cylinder
head.
When the water flows through the radiator, it
is
cooled with ethe air breathed
in
or
blowout
by the fan,
and
the whole circulation
is
achieved. If the temperature of
he
wat~r
is
too
low,
the thermostat will shut
down,
the water could't enter into the up-
per water case of the radiator and it flows
back
into the water pump through the
small tube under the thermostat,.the little circulation
is
,achieved.
Fig.
16
Layout
of
coling system
1. radiator water outlet rubber hose 2. radiator 3. water pump fan assembly 4. cowling 5. rdiator water inlet rubber
hose
6.
thermostat cover 7. thermostat
8.
water temperature gauge
9.
cylinder
head
10.
cooler water delivery con-
nector assembly
11. cylinder block 12. cylinder liner 13. cooler water outlet tube 14. cooler water inlet connector
assemblv
IS. oil cooler
16.
cooler water inlet
tube
The
4&
6-cylinder
type R series diesel engine
all
adopts the same
water
pump. The
temperature gauge
of
R series diesel engine
can
be
chosen by users and
can
be
• 44 •
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