Fuel saving modification with payback in days

26 Apr 2014
MAN Diesel & Turbo is working on optimised fuel atomisers, starting with the two-stroke S50MC engine family

MAN Diesel & Turbo is working on optimised fuel atomisers, starting with the two-stroke S50MC engine family

MAN Diesel & Turbo in Denmark has told 'The Motorship' that it has been working on optimising the design of its fuel atomisers, starting with those for some designs of S50MC/MC-C engines.

The company says that it is important to ensure that, having modified the atomiser, the engine’s NOx compliance is not compromised, and it is about to begin test bed trials with a view to NOx approval by class, on an S50MC-C engine. This will be followed by in-service trials, and MAN’s Christian Ludwig, head of retrofit and upgrade, says that, if all goes to plan, the optimised atomisers for S50MC and MC-C engines will be ready for delivery in the third quarter of this year. Optimised atomisers for other engine types are expected to be available for delivery from the fourth quarter of 2014 onwards.

The fuel atomisers can be optimised for the full load range, which Mr Ludwig says will offer potential savings of 3-4g/kWh, or, given current slow steaming practices, low load optimised atomisers will be offered, with potential fuel savings of 2-3g/kWh.

Mr Ludwig adds that because atomisers are normal wear parts, this is a very simple and low cost retrofit offering very attractive savings in fuel costs. They can be installed onboard ship by the ship’s own crew. And rather than normal payback periods extending into months or years, the optimised atomisers can pay for themselves in a matter of a few weeks, or even a few days.

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