Man L23/30DF, Руководство по проекту

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with ø3 mm hole. This is for the internal connections
of the engine to improve preheating of the engine at
stand-by.
High temperature circuit
The built-on engine-driven HT-circulating pump of
the centrifugal type pumps water through the first
stage of the charge air cooler and then through the
distributing bore to the bottom of the cooling water
guide jacket. The water is led out through bores at
the top of the cooling water guide jacket to the bore
cooled cylinder head for cooling of this, the exhaust
valve seats and the injector valve.
From the cylinder heads the water is led through an
integrated collector to the thermostatic valve, and
depending on the engine load, a smaller or larger
amount of the water will be led to the external sys-
tem or will be re-circulated.
Data
For heat dissipation and pump capacities, see D 10
05 0, "List of Capacities".
Set points and operating levels for temperature and
pressure are stated in
B 19 00 0, "Operating Data
and Set Points".
Other design data are stated in
B 13 00 0, "Design
Data for the External Cooling Water System".
MAN Diesel & Turbo
B 13 00 3
Internal cooling water system
3700201-8.0
Page 2 (2)
L27/38S, L27/38
2015.04.23 - Tier II - one string