®
®-lJmlr
.
~
.
'~
'..,.;I)
.
:"
l·D~lYBry
va
ly!!
4.conlTOll'1ck 7.Plunger
2·Dt1jlltry chamber
s.control
pi
ni
on
B-
F
eed
hole
3.cOl'ltrOI
grooVE
6-ConlTol
'$"1C'.!tl'Ve
9-f
u-e
' chambe,.
Plunger
ro
tating mechanism
Ftfd
1'I0re
"rTol groove
EffeoetjYI!I
UrDk'll
CONSTRUCTION
AND FUNCTION
b. Control
.ction
The
amount of
fuel
delivery,
or
injection quantity,
per stroke is determined primaJily by the effecti
ve
pumping stroke of the plungeL The control groove
milled
out
in
the
plunger being slanted, turning
the
plunger
around
its
axis
c
hanges
its effect
iv
e
stroke,
and this turning is effected by moving the
con
teol
rack
.
How
the
e:ffl!'
ctives
troke
is
va.titd
is
illus.trated
in
thr-ee
view
s
of
the
plunge
r,
cylinder, contlol
pinion
and
rack
:
,
A'
De-llvery stroili' "T
; {
Doh\o'tfV
5"troki!
EH
e-c-l
i
ve
m~l
T
[1
1
Non
oir.jeClion
(21
Half
in
iectlon
Injection Quantity control
13)
Fun
IniEI!Cllon
(4) DeIivety valve
The
seat
of
the delivery valve tak
..
its position
right
.bove
the barr.1 and
is
held down tight
by
the
screw
-in
pipe connection.
The
valve
has
its
guide
portion fined into
the
bore
of
the
seat
,
and
is
capable
of
moving
\'e:rticaily.
A
coil
s
prinS
urges
the
ruve
downw:ud
lo
ke
ep
the
valve
in
contact
with the
sea,
face by ils conical f.ce ,
It
should be
noted
that
a land
is
formed
of
the
valve,
a little
above
its
guide
porl
i
an,
forming
an
annu
l
ar
reces.s
be-tween
it
and
the
con
e.
This
rec
ess
assume
s
importance
in
regard
to
Usxtraction
vo
l·
ume
,"
ment
ioned previously.
CD~
CV"'----ijID
V,
've 1
~
D
el;"",
y,l",
,
~a
1
1..s'.lU"Ig fare 2-l,.and
Dslivary
v.alve
27
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