Marine Installation Manual 2022-03 2-17
2 Engine Power and Speed
2.7 Prohibited operation area
X62DF-S2.0
Power / speed range for
CMCR [Rx] =
R3 — R4 speed
In Figure 2-10, the engine’s CMCR speed is rated at the R3— R4 speed. At this
speed, a minimum engine power (point F) of 7.4 % is required. Below this is the
prohibited area of operation for a disconnected propeller.
Figure 2-10 The prohibited operation area (CMCR speed = R3 — R4)
40 50 60 70 80 90 100
[rpm]
110
100
90
80
70
60
50
40
30
20
10
0
5
7
8
CMCR [Rx]
Field A
Engine speed
Engine power [% Rx]
[% Rx]
E
F
11
12
Prohibited
operation area
7.4 [% Rx]
4132.8 49.2 57.4 65.6 73.8 82
X62DF-S2.0
SM-0803
To Next Page
Loading...