New-York tribune., 1922-05-21
More Auto Terms
Are Explained for
The New Operator
The Car Has Several '.Cut-
outs" Fam" Belt and
Other Appurtenances of
Mysterious Importance
By II. Clifford Brokaw

4.
C. A. Automobile Schools
Like the lady going to swell ball.
the automobile has "fan" to help
Keep it cool in motor car the fan
la rotary affair OF several thin metal
hIades, generally carried by horizon
tsI shaft driven from the engine. 1t is
arranged so as to create a blast of cool
air which Will help to lessen the ex-
ress,ve heat from the cylinders. On
yster cooled cars the fan is plaeed
inst behind the radiator and creates
draft through it. On airscooIed en-.
|, c;nes the fan IS placed so as to main.
tain draft Of air around the engine
cylinders.
The fan has g belt" which. like q
mans belt, performs an important
function The fan belt drives the fan
itis sometimes q fiat leather or fabric
belt running on fanged pulleys, or a
leather covered metal link belt run
ming in Y grooved pulleys. This belt
passes around pulley upon the fan
shaft and around another pulley upon
the crank shaft, camshaft or auxiliary
shaft Of the motor. Some fans are
driven by train of gears. In this
case friction coupling is usually pro-
=
prevent too sudden starting of the fan
when the motor starts
: Several Cut Outs"
The automobile has several "cut
outs" For instance, there is the
muf'er eui-out. which is valve open
ing into the outside air from the o.
haust pipe Of an internal combustion
motor at a point between the muf'er
and the motor. When this cut out is
open it permits the exhaust gases to
escape directly into the air without
passing through the muff1er. The cut
out valve is usually operated bv
pedal set IN the foot board. The cut
out, when open. makes so much noise
and does so little good, it is not sup
Piled by most manufacturers as stand
ard equipment
The "mutfier' is device for sup
pressing the noise made by the escape
of the exhaust gases from an internal
combustion motor. 1t permits these
gases 10 expand gradually in confined
spaces with resulting decrease in their
pressure and temperature. Conse-
quentiy they are finally omitted into
the outside air at pressure but little
above atmosp phere. The muf4ler is
sometimes called a silencer.
Ignition itself is the setting on
fire OF the fuel charge in combustion
space q motor so that it will burn
and exert useful pressure on the
power piston during is working stroke.
An electric spark produced by means
of spark plug is the means employed
to get ignition.
The cross member" may be one Of
the passengers in an automobile.
Usually, however it is transverse
structural member which unites the
SIDE members of frame and gives it
form and r;gidity.
Freezing" is a term applied to what
happens to the piston if the cylinder is
not cooled. 1t is as liable to happen in
summer as in winter. The piston, due
to lack of fabrication, expands to such
point that it has much friction in the
cylinder. and on account of the high
temperature becomes fast, or is said to
freeze.
The Intake Manifold
The "intake manifold" is pipe CON
nected at one point, usually the center
OF rs length, with the intake pipe 1t
comprises several branches, each of
which makes a tight joint with the ex-
ternal end of the inlet port of one
cylinder Of an engine. It, distributes
the charge received through the intake
pipe 10 the several cylinders and is de-
signed so tnat the dlStrlbutlOn to all
cylinders is equalized as nearly as pos
sibe. The ends of the branches seat
in ground joints or upon gaskets in the
port openings.
The inlet port" is passage through
the cylinder wall which connects the
intake pipe from the carburetor with
the combustion space of an internal
combustion motor. The fuel charge is
admitted through this passage. In
tour-cycle engine the inlet valve con-
trolls this port
The inlet valve" controls the pas
sage Of the charge of gasoline through
the inlet port from the intake pipe and
carburetcr. It Is operated mechani-
cally by cam,
These are only a few Of the terms
winch are commonly used by automo-
bile mechanics. Most of them are as
so much Greek to the man who has had
little experience with q car But the
owner OF an automobile ought to learn
this automobile language. so that he
can speak to service station expert
as one having at least some little un
cerStanding, II not authority.
knowedge of motor terms may
save him lot of energy, time, embar-
rassment and money. Get an encyclo-
pedla OF automobile words and study it
IN the garage III company with the au
tomoblle When one gets to know the
names OF all. its parts the car will
seem like new-found friend. And the
acquaintance will be of mutual advan-
tage