Richmond times-dispatch. [volume] (Richmond, Va.) 1914-current, 1920-09-12
.s|MPL|F|ED LESSONS IN
!. CARE OF AUTOMOBILE
Continues His Lecture on
Functions and Caro- OF
Carburctor.
10y FRED. G. GUI:RItLICH, NJ. r..
LECTURE No. 200.
The Cnrty,ircter (COntInucd.)

- The Cnrburcter tContinuedD
tCopyright. 1920. by Fred G. Guerr-
- lich)
' Were tho level OF the liquid in
--'the float chamber IA" higher than
lie mouth OF the nozzle 3d." the
gasoline would flow out steadily,
even when the engine is idle and
aH.,hcrc Is no vacuum. We also saw
That IL the level were much below
1.-THE nozzle mouth. the flow. when the
-7' engine Is running. would be de-
creased. and the mixture thus become
-. weak. So this level must constantly
80 be maintained. This is accomplished
--..By means of q float valve.
The Fiont Valve.
- In the chamber "a" a float made
--"ithcr Of cork or hollow metal. is
---placcd. and this, by operating on Il
lever. as shown in a previous article.
drawing herewith. raises or lowers "a
opening through which the gasoline
tonnes from the supply tank.
-. You will note that il the float shown
lin the illustration were resting on
the bottom OF the chamber "a" the
be down and 80 the needle 20" would
be pulled up and the opening 'P"
.-pe unobstructed: The gasoline could
he wSI S s and mus So p ,he needle
down When the proper lever
~ reached. the needle Will entirely
close the opening p"
The. level is usually regulated by
--:crew!ng the needle up or down In
LIVER. Is set at the factory and you
--nhould never monkey" with It's
regulation. Many, mechanics. either
-'iSnorantly or Carelcssly. when clean
Ing the carburctcr, turn tho needle
10 It's sleeve and so spoil tho rcgula-
tan When the float chamber cover
m M ha taken not
20 spoil this adjustment.
To 80 over the action OF the car
which Would &c a fair carbureter
for constant speed engine). We see
hat when the engine is on It's sue,
witch will extend to the manifold
afU the carbureter. thus causing a
spray OF gasoline TO issue from, the
is a rush OF air through the opening
-" which air. AZ 1t goes TO the
cylinder. viii pick UP and mix with
the spraying gasoline thus causing
AN explosive mixture to enter the
cylinders. AS the gasoline sprays
9,u. Of inc nozzis; the , Level In tn, ne
thus the noat and weights ~" drop.
causing the needle 80" to raise. and
Se the e De sas9Ss wit h Sy
enter the float chamber 10 take the
place OF that carried TO the cylinders.
The caFbureier. as far as /, was
he all right FOR single speed. uni
form load engine. but the engine OF
the automobile must have many
speeds and be able to overcome vary
ing loads. There must. therefore. be
- number OF additions to the carbu-
rkter az explained so far.
First, let US see how the speed OF
tho engine is varied. This is done
by means Of 4 throttle or butterfly
valve, r. which. when nearly
closed. Will allow but small amour,
OF the mixture TO pass and enter the
cylinders. thus giving but n mild eX-
plos!on. When the throttle is fully
opened. however. full charge o.
mixture Will reach the cylinders and
the explosion will be powerful. When
the explosion Is powerful the piston
VIII be driven down faster than witt
the mildcr explosion, and so the en-
= E!ne and car speed. Will be greater
The throttle or butterfly valve 1.
operated h. hand by lever on top OF
the steering column. or by the foot
pressing on the accelerator. Both
OF these. through series OF bell.
cranks and sliding connections. op.
crate on the rod s." pushing II Il
The right or left, You will note thai
when the rod IS" Is moved to III,
right II will, by acting on the leve,
IT. (shown dottcd). revoive the but.
tcrfy valve "I" in a direction oppo.
site to that shown BY the arrow thus
checking the flow OF the mixture
while. when It Is moved 10 the left
~ VIII opcn the butterfly and so lei