HYBRID GEARBOX
Operating modes for hybrid drive concepts
The operating modes for the tug or the workboat decide the fuel and emission reductions which can be expected. A harbor tug is used for a large variety of tasks with various speeds and bollard pull. Depending on the vessels operating pattern considerable fuel savings can be achieved. In some cases fuel savings up to a level of 40-50 % can be obtained with hybrid drives.
The classic operating modes for harbor tugs are; stop-harbor, idle/standby, transit, with loads from low, medium and up to full load. A study of operations over time will indicate the vessels operating profile.
Assist 1 - Low power Assist 2 - Medium power Idle/Stand-by Transit Assist 3 - Full power Stop-harbor
www.kumera.no Kumera Ann Tug
190x130mm.indd 1
Kumera AS – Sandefjord – Norway. +47 33 48 54 54 17.02.12 11.29
Unique advanced technology
lNTEGRATED GEAR BOX - MULTI DISC HYDRAULIC CLUTCH - HYDRODINAMICALLY PROFILED DEBRIS SCREEN GRID WITH DOUBLE MOVEMENT - DUPLEX MICRO-CASTED 3 BLADES AXIAL FLOW IMPELLER - TITANIUM LlNER ON IMPELLER HOUSING - HARD ANODIZING TREATMENT OF ALUMINUM PARTS - ALL OIL LUBRICATED BEARINGS - REMOTE OIL LEVEL CONTROL. FOR THE HIGHEST EFFICIENCY AT SPEED, LlGHTEST WEIGHT AND MORE COMPACT INSTALLATION.
SINCE 1962 LEAPS AHEAD IN MARINE PRODUCTS 72 I Marine Propulsion I February/March 2012
www.castoldijet.com
www.mpropulsion.com
BK Grafisk 02-2012
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