First Production MAN 32/44CR Engine Gains Type Approval
MAN Diesel’s type 32/44CR four-stroke, medium speed engine with common rail fuel injection recently passed the final milestone on its way to commercial applications in the marine sector. At the MAN Diesel works in Augsburg, Germany, the first production version of the 32/44CR completed its Type Approval program in the presence of representatives from the shipyard, the ship owner and the Classification Societies American Bureau of Shipping, Bureau Veritas, Det Norske Veritas, Germanischer Lloyd, Lloyd’s Register of Shipping, China Classification Society and Registro Italiano Navale. As a result of the approval, the engine is now certified for use as both a propulsion engine and to drive shipboard generator sets. Of special significance is that the 32/44CR has been cleared for use in propulsion systems based on only a single engine.
The 32/44CR is MAN Diesel’s first all-electronic engine and the first to be offered exclusively with the company’s own, in-house developed version of common rail and no other form of fuel injection. Electronics is the enabling technology of common rail fuel injection and according to MAN, Type Approval evidences the Classification Societies’ confidence in the SaCoSone on-engine safety and control system. SaCoSone features a number of built in redundancy features designed to guarantee that electronically controlled systems continue to function dependably even when individual components malfunction or fail.
As part of the test procedure on the first production engine one complete cylinder unit - i.e. cylinder head, liner, connecting rod and big-end bearing shell – and a crankshaft main bearing shell was removed from the engine and examined.
The engine involved in Type Approval was the first of two inline eight cylinder type 8L32/44CR heavy fuel engines purchased by K/S Combi Lift, a joint venture between ship owners Harren & Partner of Germany and J. Poulsen Shipping of Denmark. The engines are each rated 4480 kW at 750 r/min and will be used in the “Combi Dock III,” a versatile semi-submersible heavy lift vessel built at the Christ steel fabrication works in Danzig, Poland and currently under completion at the Lloyd Werft Bremerhaven shipyard in Germany.
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