Westerbeke Universal M-50 - Page 47

Injection Control
1. Injection "zero":
The feed hole meets the control groove before it is closed by the plunger top. Therefore,
fuel is not pressurized, and is not injected even if the plunger moves up.
2. Injection "medium":
When the plunger is rotated a certain amount in the direction of the arrow by the control
rack, stroke A is effective
until the feed hole meets the control groove and fuel is injected
as the stroke amount.
3. Injection "maximum":
When the plunger is rotated by the control rack to the maximum amount (in the direction
of the arrow), effective stroke reaches maximum and maximum injection is provided.
Injection Control
t 1
1)
2)
+
(1)
31
1. Effective Stroke
44