rack
is
prevented from mOving
too
far inward
beyond
irs "idling" position.
Adaptor
t.
m ~
Full
l
oad
(
StO
PS 8Ct
lo
n . ,
I
rdl
in
g
S
_
~
UJ
Is,~
n1111Y(
l
®
l ·AdjusUng le
...
er
2-CO.,t,olle
...
e~
.3.(i u ide
1'~l!:r
®
7,CQ
ntrQ
I blw:.k
8
-F
Iy
we
i
ihn:
9
·S...,i
II'It
I
in.v
lever
4-T
e-nsio
n
1[I'o'er
10
-C
ontrol
spring
S-Ad-aptOl"
spring
11-Comrol
rock
6-Full-load
stopper
Maximum $pead
control
(7)
Speed regulation and
adaptor
'pring
""tion
On.
way of considering
the
effect
of
full
.ngino
load on its speed
is
to
se
e what
wou
ld
happen
when
the load
is
increased gradually
under
the
last·mentioned condition
of
the
governor; namely,
the adjusting lever
is
up against
the
maximum
speed stopper
and
the
lension l
e.er
is
off
the
full·load slopper (with
the
flyweights
'plead
wide
apart). As
the
load increases,
Hu:
engine slows
down,
and
the
tension lever
clos~s
in on the
full
-
load stoppi:r, causing the
cont
rol rack. to move
in the dHechon
fOT
increasing fuel mjecti
on
quan-
tity _
As
the cng
me
slows d
own
still f
ur
ther
because
of
the increasing
IQad
, the
pu
sh
by
the
control
block against
th
e tension lever diminishes further
and. finally. the
(e
n
SJon
lever tOllches
the
full
-l
oad
stopper.
he
final speed,
it
must
be
noted,
JS
lower than
the original no-load speed by se\'erru percent
dtspite
the fact that the adjusting lever has been
kept at the position limited by the maximum
speed stopper.
T
~
is
differe
nce
in speed
belw.~n
no-load condilion and fuU-load condition is due
to
the speed droop (
or
speed regulation) characteristic
jnherent
in
the governor
of
this
type.
IIS
peed
droop"
is
desirable for
the
stability of an engine
working under
~'ariable
load
cond
i
tion.
CO
NS
TRUCTION
AND
FUNCTION
Fu
ll
load
l-
Co
nt
rol lever 6-C
olltr
ol
bl
o
c:k
:2-GuidolIeVoH
1·r:
ly
v.-.elghn
3-T
9nsion lever a..swly.e-li
ng
Itlltl
4-l
dllnC]
5uI:H
prin
g
9.con
H
OI
$prin51
6
-F
u
ll-I
O~
HOPPer
10-C0n
tr
ot
rlKk
No
-load conditi
on
{transiti
on
from " ful
l-
load
"}
Aft
er
the tension lever t
ouch
es the fult-load
stopper,
what
if
th
e load
On
the engine mcr
eases.
to lower its speed
and
cause,
the flyweighu to
contract? The tension lever can no longer push
back
the control
block
; the
contro
l
l,ver
would
be unable
to
push
the
conlcol rack inward to
increase
the rate
of
fuel1n
j
cction.
T
his
condition
is avoided
by
mean,
of the
adaplor
spring built in
the tension
lever_
Full load
AclIPtor spring I
Idl
ing
(stop
)
narn
to
act
Stltrt
!In
uIT
CD®
®
f\\
-:=!.I
, -AdtI.lUu'9 lever
5--A
d.aPto r
,pring
2-Co
nvol
I,ver
S-Swiveflng l
e-'rIe
r
3-Gurde laver 7
-C
o
o\to(
sptll'Q
4-T
ensaon
le'o'e'
S.co
nt
rol rack
Ada
pto
r spring
33
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