In his paper, Per Arne Haug will focus on their development of a 2-step mechanical transmission, KN 2E4D6C-2500, for main propulsion. The gear solution is specially designed for AHT, tugs and workboats, with significantly varying operational modes and three power take-offs. Due to the prototype character of the new innovation, FAT break-testing was defined for the new development.
–The aim for lower fuel consumption and reduced emissions of greenhouse gasses pushes the marine industry for new innovations. Utilizing our know-how from main propulsion technology and auxiliary PTO gear technology, Kumera Norgear has defined the Kumera Norgear Hybrid Concept, says Per Arne Haug.
For a tug, the low power modes are dominant. Significantly increased fuel efficiency and reduced emissions can be achieved by optimizing engine operations:
- By varying engine speed,
- By utilizing a 2-step main propulsion mechanical transmission,
- By split main propulsion mechanical transmission for DP and propulsion,
The Kumera Norgear Hybrid Concept in principle replaces one of the ship’s diesel prime motors, with a PTI/PTO electrical motor/generator.
The project is executed by Kumera Norgear, in close cooperation with Buksér og Berging, as partner in the development of the gear solution.
This is the fifth Tugnology event, since it began in 2007. The two-day conference focuses solely on tugs, with papers, forum sessions and valuable interaction within the network. The event has shown that it can drive both business relationships and key elements in the development of the tug industry.