Daedong CK22, Workshop Manual

Page: 76 / 372

2-24 DS35-W00 May. 2007
CLUTCHCLUTCHCLUTCHCLUTCHCLUTCH
TRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSIONTRANSMISSION
ENGINEENGINEENGINEENGINEENGINE
HSTHSTHSTHSTHST
FRONT AXLEFRONT AXLEFRONT AXLEFRONT AXLEFRONT AXLE
STEERINGSTEERINGSTEERINGSTEERINGSTEERING
BARKEBARKEBARKEBARKEBARKE
ELECTRICELECTRICELECTRICELECTRICELECTRIC
INDEXINDEXINDEXINDEXINDEX
HYDRAULICHYDRAULICHYDRAULICHYDRAULICHYDRAULIC
GENERALGENERALGENERALGENERALGENERAL
REAR AXLEREAR AXLEREAR AXLEREAR AXLEREAR AXLE
CK22/CK22H
A. PUMP ELEMENT
The pump element (1) consists of a plunger (3) and
cylinder (2) which their sliding surfaces are finely ma-
chined to maintain the fuel tightness. The plunger (3)
is installed in the control sleeve (5) and the sleeve is
engaged with the control rack that rotates the plunger
in the cylinder to control the amount of fuel delivered.
(1) Pump element (5) Control sleeve
(2) Cylinder (6) Control groove
(3) Plunger (7) Sliding surface
(4) Feed hole
T46W237A
(1) Delivery chamber (4) Feed hole
(2) Plunger (5) Fuel chamber
(3) Delivery valve (6) Control
B. OPERATION OF PUMP ELEMENT
a . Before delivery
As the plunger (2) lowers, fuel is drawn into the delivery
chamber (1) through the feed hole (4) from the fuel cham-
ber (5).
b. Beginning of delivery
When the plunger is pushed up by the cam and the
head of the plunger closes the feed hole (4), the pres-
sure in the delivery chamber (1) rises to push the deliv-
ery valve (3) open.
c. Delivery
While the plunger (2) is rising, delivery of fuel continues.
d. End of delivery
When the plunger rises further and the control groove
(6) on its periphery meets the feed hole, the injection
stops because the pressure in the delivery chamber
(1) is reduced to the opening pressure.
T46W238A
4
5
6
7
2
3
1
3
6
5
1
2
4
ENGINE - OPERATING PRINCIPLE