This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
This section is available on request - MAN Diesel & Turbo
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<strong>MAN</strong> B&W <strong>Diesel</strong> A/S 6.04<br />
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∆m M% = 14 x ln (P M /P L1 ) – 24 x ln (n M /n L1 )<br />
Fig. 6.04.07: Change of specific exhaust gas amount,<br />
∆m M% in % of L 1 value and independent of P O<br />
∆m M%<br />
∆T M<br />
∆T O<br />
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: change of specific exhaust gas amount,<br />
in % of specific gas amount at nominal<br />
MCR (L 1 ), see Fig. 6.04.07.<br />
: change in exhaust gas temperature after<br />
turbocharger relative to the L1 value, in °C,<br />
see Fig. 6.04.08. (P O = P M )<br />
: extra change in exhaust gas temperature<br />
when matching point O lower than 100% M:<br />
P O% = (P O /P M ) x 100%.<br />
∆T O = - 0.3 x (100 - P O% ) [6]<br />
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178 51 11-7.1<br />
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∆T M = 15 x ln (P M /P L1 ) + 45 x ln (n M /n L1 )<br />
Page 9 of 12<br />
Fig. 6.04.08: Change of exhaust gas temperature, ∆T M in<br />
point M, in °C after turbocharger relative to L 1 value and<br />
valid for P O = P M<br />
b) Correcti<strong>on</strong> for actual ambient c<strong>on</strong>diti<strong>on</strong>s and<br />
back-pressure<br />
For ambient c<strong>on</strong>diti<strong>on</strong>s other than ISO 3046/1<br />
1995 (E), and back-pressure other than 300 mm<br />
WC at specified MCR point (M), the correcti<strong>on</strong><br />
factors stated in the table in Fig. 6.04.09 may be<br />
used as a guide, and the corresp<strong>on</strong>ding relative<br />
change in the exhaust gas data may be found<br />
from equati<strong>on</strong>s [7] and [8], shown in Fig. 6.04.10.<br />
Parameter Change Change of Change of<br />
exhaust gas exhaust gas<br />
temperature amount<br />
Blower inlet temperature + 10° C + 16.0° C - 4.1 %<br />
Blower inlet pressure (barometric pressure) + 10 mbar - 0.1° C + 0.3 %<br />
Charge air coolant temperature<br />
(seawater temperature)<br />
+ 10° C + 1.0° C + 1.9 %<br />
Exhaust gas back pressure at the specified MCR point + 100 mm WC + 5.0° C -1.1 %<br />
Fig. 6.04.09: Correcti<strong>on</strong> of exhaust gas data for ambient c<strong>on</strong>diti<strong>on</strong>s and exhaust gas back pressure<br />
178 51 13-0.1<br />
K90ME-C, K80ME-C, L70ME-C, S65ME-C/ME-GI, L60ME-C 198 44 20-9.1<br />
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