CYLINDER BLOCK
The engine features a high durability tunnel-typed cylinder in which the crank bearing part is
constructed body. Furthermore, dry-type
cylinder liners, being pressure-fitted into cylinders, allow
effective cooling, less distortion, higher wear-resistance qualities and each cylinder having its own
chamber
helps to minimize noise.
Tunnel
cylinder
block
CYLINDER HEAD
The cross-flow type inlet/exhaust ports
in
this engine have their openings at both sides of the
cylinder head. Because overlaps of inlet/exhaust ports are smaller than
in
ports of other types
which have openings one side, the suction air
can
be
protected from being heated and expanded
by heated exhaust
air.
The cool, high density suction air has a higher voluminous efficiency and
raises the power of the engine. Furthermore, distortion of the
cylinder head by heated exhaust air
is reduced because suction ports are arranged
alternately. The combustion chamber is exclusive
spherical
combustion chamber type. Suction air
is
whirled to
be
mixed effectively with fuel,
prompting combustion and reducing fuel consumption.
In
the combustion chamber are installed throttle type injection nozzle and rapid heating sheathed
type
glow plug. This glow plug assures easier than ever engine starts
even
at
-15°C
(15°F).
Cross-flow
type
cylinder
head
Combustion
chamber
(6
(1)
1_
Combustion chamber
2. Suction
3. Exhaust
4. Nozzle assembly
5. Glow plug
6. Cylinder head
26
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