At
middle/high speed running
The engine speed
is
controlled when the tension of governor springs 1 and
2,
which are
pulled speed control
lever,
and
the centrifugal force of ball weights are balanced. When the
speed
is
reduced
(A
-
B)
with load increased
(a
-
b),
the centrifugal force of ball weights
becomes
smaller than the tension of governor springs 1 and
2.
As
a result, the control rack
is moved rightward and
fuel injection amount
is
increased to produce
an
engine torque
required for the
load.
(a
-
c)
At middle/high speed running
1.
Speed Control Lever
2. Governor Spring 1
3.
Governor Spring 2
4.
Ball Weights
When load
is
increased
(1)
(3)
(2)
t
(5)
(4)
__
1.
Engine Torque Curve
2.
Small Loan Torque Curve
3.
Large Load Torque Curve
4.
Engine
R.P.M.
5.
Torque
68
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