This section is available on request - MAN Diesel & Turbo
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This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W 2.04<br />
Example 1: Normal running c<strong>on</strong>diti<strong>on</strong>s.<br />
Engine coupled to a fixed pitch propeller (FPP) and without a shaft generator<br />
Layout diagram Load diagram<br />
Power, Power, % of % L1 of L1 100% 100% 7 7<br />
5 5<br />
4 4<br />
1 21 62<br />
6<br />
L 3L<br />
3<br />
L 4L<br />
4<br />
M Specified MCR of engine<br />
S C<strong>on</strong>tinuous service rating of engine<br />
O Optim<str<strong>on</strong>g>is</str<strong>on</strong>g>ing point of engine<br />
A Reference point of load diagram<br />
MP Specified MCR for propulsi<strong>on</strong><br />
SP C<strong>on</strong>tinuous service rating of propulsi<strong>on</strong><br />
The specified MCR (M) and optim<str<strong>on</strong>g>is</str<strong>on</strong>g>ing point O and its propeller<br />
curve 1 will normally be selected <strong>on</strong> the engine service<br />
curve 2 (for fouled hull and heavy weather), as shown in the<br />
layout diagram.<br />
Point A <str<strong>on</strong>g>is</str<strong>on</strong>g> then found at the inter<str<strong>on</strong>g>secti<strong>on</strong></str<strong>on</strong>g> between propeller<br />
curve 1 (2) and the c<strong>on</strong>stant power curve through M, line 7. In<br />
th<str<strong>on</strong>g>is</str<strong>on</strong>g> case, point A <str<strong>on</strong>g>is</str<strong>on</strong>g> equal to point M and point O.<br />
<strong>MAN</strong> B&W MC/MC-C-TII engines<br />
A=O=M=MP A=O=M=MP<br />
S=SP S=SP<br />
1 16<br />
2 2<br />
6<br />
Propulsi<strong>on</strong> Propulsi<strong>on</strong> and engine and engine<br />
service service curve curve for fouled for fouled<br />
hull and hull heavy and heavy weather weather<br />
Engine Engine speed, speed, % of % L1of L1 7<br />
7<br />
L1L 1<br />
L2L 2<br />
100% 100%<br />
<strong>MAN</strong> <strong>Diesel</strong><br />
Power, Power, % of % L1of L1 100% 100%<br />
L 3L<br />
3<br />
L 4L<br />
4<br />
3.3%A 3.3%A 5%A 5%A<br />
4 4 1 61<br />
2 2<br />
Propulsi<strong>on</strong> Propulsi<strong>on</strong> and engine and engine<br />
service service curve curve for fouled for fouled<br />
hull and hull heavy and heavy weather weather<br />
Engine Engine speed, speed, % of % L1of L1 A=O=M A=O=M<br />
7<br />
5 5<br />
Page 6 of 10<br />
5%L 5%L 1<br />
1<br />
3 3 3 3<br />
100% 100%<br />
Point A of the load diagram <str<strong>on</strong>g>is</str<strong>on</strong>g> found:<br />
Line 1 Propeller curve through optim<str<strong>on</strong>g>is</str<strong>on</strong>g>ing point (O)<br />
<str<strong>on</strong>g>is</str<strong>on</strong>g> equal to line 2<br />
Line 7 C<strong>on</strong>stant power line through specified MCR (M)<br />
Point A Inter<str<strong>on</strong>g>secti<strong>on</strong></str<strong>on</strong>g> between line 1 and 7<br />
Once point A has been found in the layout diagram, the load<br />
diagram can be drawn, as shown in the above figure, and<br />
hence the actual load limitati<strong>on</strong> lines of the diesel engine may<br />
be found by using the inclinati<strong>on</strong>s from the c<strong>on</strong>structi<strong>on</strong> lines<br />
and the %�figures stated.<br />
178 39 20-6.0<br />
Fig. 2.04.04: Normal running c<strong>on</strong>diti<strong>on</strong>s. Engine coupled to a fixed pitch propeller (FPP) and without a shaft generator<br />
S<br />
6<br />
S<br />
7<br />
L1L 1<br />
L2L 2<br />
198 69 94-7.1
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