Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1920-03-07
|slMPuF|ED LESSONS IN
n B CARE OF AUTOMOBILE
Expert Guerrlich Tells Of Cooling
y System in Dealing With
ssss Car Engines.
ny FIRED. Q. GUERRLICII, N. f.
sAs@ Lesson No. 1874. -

,sss. BY FIRED. O. GUERRLJCII, NJ. T..
Lesson No. 1874.
~ The gas engine, known to engineers
sas an internal combustion engine. to
issnown as heat engines. Because Of the
TACT that the power, is derived from
Of gas and air explodes or burns. as
tl,eat means power. all OF the heat
practical must be kept in the engine:
a.eunfortunately If the metal parts of
the engine be allowed 20 reach GER
. tain temperature they will become
SOFT. and as they must rub together.
the metal would soon be cut and so
the parts be ruined. Thus the engine
must BIO equipped with some device
Low. this dangerous temperature In
s|other words cooling system stem, must tss
e 81 S from becoming ha 50 hot as to
be cut and ruined by the rubbing OF
the reciprocattns pistons
~ Where air IS used alone, fanges or
are sa aTpu nsnda ns ihe
away from the cylinders, the heat. in
turn. being taken from the nanses
them by means OF fan. BY observ-
,jng the engine on most motorcycles
YOU will be able to see how these
tilnngeS cast on the cylinders.
iSfr WAtcr-CooiinE Described.
When the . engine is ~, w9;t,e ,I.,
around the cylinders and water is then
made to circulate through these JACK.
with the metal it cools il. but in do. !
ing SO it will take the heat to itself
water also be cooled it would in time
become so hot as to be useless as u
cooling medium for the cylinders
Of water from the city p!pinE can be
used. but on moving aut9m eTn the
same water must he used over ana
order cool this /
Mater it is led from the cylinders, TO
The top of cooling tank.-calied
Rows downward;' being, cooled on the
way down by air which is sucked
to make the water circulate through
IN ONE mater of tSeas pump .ne
immediately in back OF the radiator,
sucks the cooled S water ror from the nro hot
Of the radiator. down through which
on ' the Way" Way down 10 when it Is again
pumped through the jackets. etc. This
is called the pump system ana Is
The other system. called natural cir !
cnlation. OF thermo syphon system DC.
for the crenaton on th sne d eaS
water. will go to the top and cold water
to the bottom. Thus when the engine
w hscome the hot nnd so trave ups
ward to the top Of the radiator. its
place being taken by the cooler water
in the bottom OF II.
There is little to choose between
these two systems. The pump sys-
tenn gives more positive and vigorous
OF a pump. This pump may be an
moving because of leakage past the
packing c. Fig. 9. which packing must
Two type. OF Radiators.
There are at Two types Of radiators
THIS you will notice. consists Of n
srea, number of vertical tubes. about
thin metal fanges. AS tho water flows
through these tubes. the tubes become
hot. and their heat is then conducted
in turn. cooled by air which Is sucked
through them by a fan generally placed
Immediately in back of the radiater:
1ywheel act as fan.
Figure 4 shows section Of a cellu- |
two hn sheets he wat Of es
(which might be termed a very thin but |
wide tube. so that the water travels |
stream. To m make g" this SSs stream as lon.
as possible. the sheets are bent in a
zig-zag way. as shown in the iilustra-
sheets are soldered together so that
the radiator gives the appearance OF
honeyconib. The space between the
tubes Will form cells through which
air is drawn by the fan.
The radiator often will spring leak.
though experience has shown what the
cause of this is. and the methods Of |
mounting the radiator now are such
that IL will not be affected by the
.ws sssi, aRd ,sx, ,saes Of the frame.
in the case OF accident. are compare
lively rare. Nevertheless, radiator.
often do spring leaks with apparently
no cause. Ia
Az to Leak-stoppinE Devices.
The writer regularly receives letters
asking II the use of naxseed and other |
leak stopping devices are good TO use