Cylinder Head; Crank Case And Cylinder Liner; Unaxial Balancer System - Kubota WSM OC60-E2 Workshop Manual

OC60-E2, OC95-E2, WSM

[1] CYLINDER HEAD

[2] CRANK CASE AND CYLINDER LINER

[3] UNAXIAL BALANCER SYSTEM

As the cylinder head is subjected to high temperature
and high pressure, it is made of special cast iron.
This engine employs Kubota's exclusive TVCS
(Three Vortex Combustion System) system.
system provides three swirls inside a spherical vortex
chamber during the combustion stroke for effective
combustion. Furthermore TVCS has been originally
characterized by low noise, in comparison with direct
injection type.
The combustion chamber is provided with oil
passages around. This way, the injection nozzle is kept
cool to prolong its service life.
explosive sound is suppressed by the oil's viscosity to
keep the engine noise low.
The crank case is made of aluminium die-cast.
The crank case is provided with oil galleries to
lubricate the crankshaft, crank pin metal. Another oil
passage is provided at the side of the cylinder liner.
This passage, also, serves to keep the cylinder liner
cool and to suppress the explosive sound for lower
noise.
The cylinder liner made of special cast iron having
excellent wear resistance, is casted into crank case.
A unaxial balancer is adopted to reduce engine
vibrations. There are two major vibration sources in a
single-cylinder engine. One is the inertia force which is
generated when the piston and the small end of the
connecting rod are reciprocating.
centrifugal force (kind of inertia force) generated when
the large end of the connecting rod is turning. The
resultant force of these two inertial forces can be
directed freely by adjusting the weight, but the force
itself remains unchanged.
provided in order to offset these inertial forces. This
shaft has a weight that turns in the direction opposite to,
but at the same speed as the crankshaft.
M-3
ENGINE
This
What's more, the
0000009116E
0000009118E
The other is the
The balancer shaft is
0000009120E