New-York tribune., 1922-12-24
s,Iy sS,v Ignition System
s',., ssS' Re FunctiOning in
,u', without Interruption
..,t Plays Big Part
VIII Suffer Loss
tng1Ip Power if the Proper
= s,,I..tment Is Neglected
clifford Brokaw


zoe, zoe '',.' !, Ike, he will recall that
sfl's =, The most power one
'ia'l ..'s = down y. WITH the foot on tAS
o. 70 ps.' :, b, zOnsnt this pedal
s'A ~. .s = n, Top center II he
., s'g.,1 g.va s.sss. ~ i r.sss' n. A,.,p top
'''h'' S.'. :. ,,oS, % tnvs iho bicycle
''a:'' i..s ;, is's = ss waits ur'il the pedal
s''fvsHs ~ : NJ past TOP center he
b s'l'" .ls power. Power ap-
's'', !. n',, =. s.d,l At bottom center
,,l.s |.r:s :. . ,ov,r ~ :. all 1t is just this
~, 7. - - ,sinr iAIt happens in an auto
p .'r. : ,ssiss. 's' and whether the motor
- ~ ,,,r.ssly =, in this respect depends
:, TIE igrit0n.
4 r,,ltlOn. compression and gas IN the
/ 80, AZ. necessary TO get an en-
i, started. The first Of these is OBJ
- by nssns Of an electric spark
!. ,,,bure,or receives the gasoline
= ,.. hal tank, vsporiIss II and
+, n With air to provide the oxygen
....,,,ry for rapid combustion. This
,..r, Is drawn into the cylinder
q ,onpr,ssed for the purpose Of in
-.,,lsr TIE power. This compressed
.s.,, i ignited and as IL burns con-
s,r.ble ksss is generated which gives
IA pressure on the inside Of the
,s,!,r. forcing the piston out Of the
-s,JO and turning the crank shaft
- drives the auto. In order TO
-. the most efficient operation Of
/. ,nFipe Il Is necessary that the
- oeeuf st q time which will cause
/, rsKimum pressure In the cylinder
~ he piston is in the best position
= ,grning the pressure into useful
VI
Function Of Piston
Z, ess Is drawn into the cylinder
,es piston moving out. The piston
~ back In 10 compress II and the
,nar Of the explosion forces It
,gtia. II with the engine turning
~ tie spark should be caused 10
Usr vkls the piston was moving
70 As rylinder on the compression
eFoks, he gas would be ignited and
1 pitmgn gsnerated that would force
i. yisssa back out Of the cylinder
before she crank had reached and
psslsi As dead center point. This
vs5lf egtt the engine, like the
sgsle, 70 run backward. IL is called
d;k back.
ludsr these conditions, the spark
e<8 oeeur at the same time and the
1ss should be running at a higher
?, q speed this same back pressure
i'i1 oeeur But there might be sufii-
's' P9wer stored In the Aywheel tc
Et'ne this back pressure and cause
y ngno 20 continue TO run In th'
1W direction, although with grea'
= g power.
O. he other hand, II the spark oc
y IAo time after the gas has beer
srsss ID and the piston has starte,
nrel out Of the cylinder and th'
sU stroke has been partly com
NJ il is evident that this will alsi
1aie the power delivered by th'
ris. Most Of the loss in this cas-,
ltt Of unbuTned gas which gOel
Arough the exhaust valve snC
-ilsies its burning in the muffer
3 earned in the muffler does not
tiltt power.
lfsn the foregoing ii is evident
a aefe Is a particular point in the
i7t oi the piston where the spark
.'-lt occur in order to give the best
islii. This point changes as the
igte speed changes. In order tina;
= iptTk may occur at the psyche
lgitsl moment" in each cylinder OF
Z motor an igniter or ignition tim
( aeyiss is provided.
me ignitsr is equipped with a pair
4 hmrTupl&r points, one fixed and
ne e'asi movable. The movable one
Il /, ogeIa'se b cam which is driven
.ll.Sssl ~ ,s'sshis gearing by the crank
..,.I, 81 o NE engine. The spark Is OBJ
I. ,-'n'a y bringing the movable point
b.. sonlta .a With the fixed point and
,-.1.' ~ separating the points. The spark
M. ' 3 ne points separate.
80 giilsr also has a distributor
y 80 ~ slfeets the sparks TO the differ
~. ~ 1ail1osft a. In the proper order OF
4, .Hlng' To provide for changing
i. ... ~ q which the sparks occur in
\ ~. s...nesr.' the igniter is arranged
~. IL. 'le interrupter points may be
~. y open earlier or later in the
- " me piston. This action is
~ S,asAneing and retarding the
-, ~ Is controlled by the operator
:, - small lever called the spark
.'sa'| placed above the steer
- IA ,,ie tae engine Is about to be
Iis lever should be placed in
n ~ position in order to insure
-, spark will occur after the
4 a = passed the top head center
ss,. piston is ready 10 travel out
Q {. "ser stroke. However. as soon
nj 'ngine attains any speed the
"a N'er should be advanced so
} ~ PARK will occur early enough
IN 'ae gas burning and produce
st.-.Ip pressure at the beginning Of
Rapid Burning Of Gas
a., .l 6e understood that the gas
! enc sno burns very rapidly. so that
,.f'oiion would seem 70 be in
- sss'os'. However. there is q small
hi. " a second consumed in ret
ts. gas fully iRnited. The piston
~ --t running engine would
,is,.ral iSsysral inches In this time.
s~enuon % the speed Of the motor
I gs.ns o. gas being fed to Il af-
~ - = position az which the spark
n uF The greater the quan-
=, 20, sss taken into the cylinder the
h s.-teed the spark should be.
,e,;s. seitain engine speed a small
+ r. ~ gas is being fed and the
! sr..L s are obtained by carrying
s.sI.,s sss sever In a certain position,
~, ,,,,ssy supplying double the
q, =. gas, without increasing the
: :, eed' would cause back pres
49, ioss OF power. because the
4 lS-aa s,..., barn much quicker.
Z anee u is well 70 experiment
4, n PARK advance lever and ad-
~. e q point where the engine