2.
Controlling process
at
the
lowest governing scope
of
engine.
(Fig.
5)
Once the engine has started, the engine
is
kept at idling condition by maintaining the
control-lever
at
idling position
(2).
In
this case
the
idling position
of
the control-lever (2)
is
slightly before
the
original position
(0).
Under this condition,
the
governor begins its self-governing automatically. When the
control-lever drawn back from the starting position, the governor-spring
is
eased so
that
it
reaches barely the vertical
pOSition
coming about under
the
revolving center of the
tension-lever. Accordingly
the
force of the governor-spring which acts on
the
shifter,
guide-bush and flyweight through the tension lever becomes very weak, and the flyweight
may spread outside even
at
a low-speed r.p.m.
Full
Idling
Cantral-lever
FuII-load-
stopper
Fig.
5 Idling
The
flyweight transfers the guide-bush and the shifter following
the
direction of the
arrow as shown
in
Fig. 5. The guide-lever connected with
the
shifter will move with the
shifter, and revolve the floating-lever, and the lever
will
pull
the
control-rack connected with
it
to
the
idling position.
In
this case
the
tension-lever comes
in
touch with the idling-sub-spring and performes
idling smoothly helped by
the
spring.
When
the
r.p.m.
is
lowered,
the
centrifugal force
will
be
decreased,
the
spring
will
be
-
39-
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