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
it
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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