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CONSTRUCTION
AND FUNCTION
(9) Govemor ch3r8eteristic
lEnd
Of
SHoks
limited
by
$IMlvl!!~
\
/
Rack
p~ed
in
bvyond ___
r
fl~/////
full·load
po.itlon
b'f
H
"
start spring
S"'rt
,pdng;n
.
,,;on
-1~
Control
block
oPPOs.eci
by
adaPlor
SQrtl'lg.
Adtplor spring yielding
10 the pud'l
Adaptor
~p:i
n
g
fully
comprsssRd,
corntol bloek
being
oppossd dirK't
by utMion Ilt'Vtf
'"
E
"
E
r~
I
I
\
p"
t.
oor~.
I
\
E
'§
k
I
", .. ng
8
e>.
~
J
I
i. "'-
Maximum
speed control
ra
n
~
(Tension
lever
;$
off
fu
ll·rood
n
opper.)
no·load
positIon
Adjur;ting
lo ... er
in
idl,i'lg position
-
Sratt
$pring and
Spe:c:ified
I.....t-\ K
idling
speed
idling
spri~
in
lK::uon----f-L._-
_
_
-'-_
__
L_.J....
_ _ _
L....L _ _
Pump speed (rpm) _ _ _
( 10)
Stopping tbe engine
with stop
lever
The
stop device, menlioned
in CONSTRUCTION
DET
AILS,
i,
shown schematically
,
" mOcialed
with {he
bottom
end
of
the
control
lever.
With
the stop
le"ter
in
normal
position,
the c:ontrol
lever
has
its bottom end at the position for
normal
governor
operstion.
Push.ing down the SLOp
lever
1·AdjU9Ung
lever
2 -Control
lelo't:t
3-Guide lever
6~ontrol
block
1 ·Flywl!ights
8-Swivtling
'e~er
4
·T
emlon
levtr
9-CDntrol
spring
5-S
IOP
It!l'er
10-Conuol rack
StOpping
the
engine with SlOp
lever
,.
tillS the
conllol lever to pull lbe
control rack aU
the
way out 10
the non-injection
position
,
thereby
causmg the
engine to stop.
lnjec.tion nOlzle and oozrle bolder
Referring to the cross
section
of
the
n07..z1e,
the internal
spac<
of
Ihe nozzle
and
holder
is filled
with
fuel.
The
leakoff line
for passing the fuel back
to feed
pump is
connected
to
nozzle
holder.
The
leakoff
passage
drilled
out
in the
holder
is communicated
to
the
space
above
distance
piece,
in
which pressure spring is
contained
10
load upon pressure
pin.
The
fuel
inlet,
to
which
lb. injection
pipe (not shown)
is
connected,
is
provided
in
the holder. The
inlel passage
extends through lbe
nozzle holder
and
opens
out at
the
pres.sure
chamber
formed
in
the
rip of injection
noule.
The
needle valve
has
its
conical
face
e"posed to
the
fuel
In
Ihe
pressu
re chamber.
In
operation.
a shot of high·pressure fuel
reaches
lhe
pressure chamber
In
the
form of a pressure
rise
,
causing
the needle to unseal
$0
that lhe fuel
is
forced
out
through the
orifice
into the precombwlion
chamber.
The pressure at which the needle unseats
itself is
deter-
mined
by
t
he
compressed Slate
of
pressure .pring.
TM
preload can be
valied
for adjustment by changing the
thickness of
washer.
The internal
mating
faces as well
is
the threaded
portions
are flnished to
extremely
close
tolerances to
ensure
the high oil·lightness required of
this
injectlItg unit.
35
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