SELECTION OF REDUCTION GEAR RATIOS FOR MARINE DIESELS. A FEW OBSERVATIONS ON A NEGLECTED SUBJECT

Owing to the economics of production most small marine Diesels, say up to 1,000 bhp, are based on engines designed for crankshaft speeds of about 1,200 to 2,500 rpm. These speeds are usually too high for good propulsive efficiency and it becomes necessary to reduce the crankshaft speed by means of gearing. In the days when the requirement consisted of a simple 2:1 or 3:1 reduction, the selection of gearing was an easy matter, but today there is more choice and the selection of appropriate gearing is more difficult. The Author outlines the problems involved and discusses methods of solving them.

• Corporate Authors:

  Reed (Thomas) Industrial Press Limited

  36/37 Cock Lane, Saracen's Head Building
  London EC1A 9BY,   England 
• Authors:
  • BRUNTON, P J
• Publication Date: 1976-5

Media Info

• Features: References;
• Pagination: 3 p.
• Serial:
  • Ship and Boat International
  • Volume: 29
  • Publisher: Reed (Thomas) Industrial Press Limited

Subject/Index Terms

• TRT Terms: Diesel engines; Engine efficiency; Gears; Propulsion; Reduction gears
• Old TRIS Terms: Geared diesel engines; Propulsive efficiency
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00153038
• Record Type: Publication
• Source Agency: British Ship Research Association
• Files: TRIS
• Created Date: May 11 1977 12:00AM