MAN 175D Webinar, Propulsion System

What are the specific features and technologies of the MAN propulsion train?

Which advantages does the standardization of our MAN propulsion train solution offer? And between which different applications can you as our customer choose compounding the propulsion train individually, fitted to your own specific needs? These and other questions are answered during our third high speed webinar, which took place at the SMM in Hamburg. Here, Dr. Matthias Schlipf, Project Manager of the MAN 175D, Mr. Karsten Borneman Sørensen, Head of Sales Department, and Mr. Michael Muff Jensen, Sales Manager for aft ship propulsion solutions, explained what is behind the MAN propulsion train solution and its technology.

We hope you are enjoying watching our third high speed webinar and we can provide the right answers to your questions and requirements.


Summary of Q&A Session

Is the Alphatronic 3000 supporting variable frequency drive on PTO?

This is a good question. Definitely, we are able to interface with variable frequency drives, making it possible to utilize the shaft generator, not only in constant speed-mode, but actually in combinator-mode. This is assuring the absolute minimum fuel oil consumption of the power train. More specifically, this means focusing on the optimum pitch in combination with the optimum rpm, while looking at the optimum specific fuel oil consumption of the engine and utilizing the shaft generator at the same time. So yes, definitely, we are able to handle this as well.


Can I also get other propeller diameters and speeds, than those listed in your standard scope?

Yes, this is one of our strengths actually. We do tailor-made solutions all the time. We are suggesting a standardized program, but of course if the customer comes to us with specific needs. One example could be an ice classed vessel design, where you need to strengthen the gearbox, the propeller, the hub, everything for the ice demands - then this is definitely also feasible. So we will taylormade our solution, and customize it to the specific customer needs.


What are the savings in fuel consumption for an optimized plant with Kappel propeller blades?

With a Kappel propeller and its extended tips, we can increase the propeller efficiency by three to five percent, compared to a conventional propeller design. Some people think they have to multiply with efficiency - but no, three to five percent improved efficiency on the propeller is directly transferable into a three to five percent saving in fuel costs on the ship.

Also the Kappel design goes very well hand in hand with other efficiency devices. Very often, we see combinations like fixed pitched propellers with boss cap fins or controllable pitch propellers with rudder bulbs, adding further two to four percent to the efficiency. So when we are talking about total figures, we have a combined improvement of efficiency in the range of five to nine percent. So it really brings something into the equation, in comparison to conventional traditional designs.