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4 - 4
CONNECTING
ROD
Connecting rod is made from forged
aluminum alloy which withstands high
combustion pressure and tension under
heavy load and high speed operation.
Kelmet bearings are provided as large end
bearing, while the material
of connecting
rod itself serves
as small end bearing.
(See Fig.
4.)
4- 5 PISTON
Piston is made from aluminum alloy
casting, and i t has three grooves for piston
rings.
On the piston top, a combustion chamber
is arranged where the injected fuel mixes
with air and ignites.
The piston profile is
so designed as to
minimize piston noise.
(See Fig. 5.)
4 - 6 PISTON
RINGS
Piston rings are made from special cast
iron. The profile of top ring is barrel
face,
and that
of second ring is taper with
under cut. The
oil ring is the
combination
of cutter rings and an expander which
is excellent in gas sealing and reducing
oil consumption. (See Fig.
5.)
4 - 7
CYLINDER
HEAD
Cylinder head
is the most important part
of the diesel engine. It is made from one-
piece aluminum alloy die cast, in which
intake and exhaust ports,
rocker arm room,
and cooling fins are
molded in the most
ideal structure for the highest strength
and the highest cooling efficiency.
High quality heat resistant valve seats
are pressure- fitted considering high
resistance to abration and corrosion at
high temperature.
(See Fig. 6.)
FIG. 4
TOP RING
SECOND RING
OIL RING
CONNECTING ROD
FIG.
5
FIG.
6
,
,
, -
- 6 -
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