2. 3 Cooling Water
The diesel engine should adopt clear
soft
water
such as tap
water,
rain
water
and riv-
er water
,etc
..
If hard water is adopted such
as
well water and spring water which
contains much more minerals, the hard water should be softened,
of
there will be
scale on the
water
passage
of
the engine and block the
water
;weaken
the
cooling
effect
and recult
in
the engine
too
hot.
One
of
below methods can be used
to
soften
water:
( 1) boiled,precipitated and filtered before used.
(2)
Fill20g
Na
3
P0
3
on each IOkg
water
,precipitated and piston
rin"g
fom
being dam-
aged.
When the temperature is below
ooc
,antifreeze mixture can be used
for
cooling
me-
dium.
The
antifreeze mixture can be mixed with water and alcohol according
to
the
below
ratio.
Volume ratio
of
antifreeze mixture(
%)
water
alcohol .
90
10
80 20
70 30
60 40
50
SO
Ice point
of
antifreeze mixtureOC
denatured alcohol
water
alcohol
-3 -S
-7
-12
-12 -19
-19
-29
-28
-50
When compound and fill the antifreeze mixtrue,pay attention
to:
( 1)The antifrezed mixture is poisonous,never drink it.
(2)When
the engine is
working,
the temperature
of
the
antifreeze mixture
doesn't
exceed
900C
so
as
to
avoid the alcohol volatilize.
(3)
test
the volume
of
the antifreeze mixture
each
25
- 30hrs ,compensate it
if
not e-
nough.
(4) the volume
of
antifreeze nixture should be 6% less than
the
water,
because the
antifreeze
rni~ture
preventive
liquid
will
exqands
at
nlgn
temperature.
2.4Auxiliary material
The types
of
glue R diesel engine adopt is
as
the following table:
•
56
•
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