TRANSIENT RESPONSE MODEL OF LOW-SPEED DIESEL ENGINE IN ICE- BREAKING CARGO SHIPS

The propulsion system of ice-breaking cargo vessels is briefly discussed. A transient response model of the low-speed engine is presented. The model was developed to simulate low-speed diesel engine driven propulsion systems in ice-breaking cargo vessels during rapid load fluctuations. The low-speed diesel engine model is a thermodynamic quasi-steady model with cylinder processes. The exhaust gas receiver heat capacity was included in the model and an exhaust gas receiver heat transfer model was developed. The simulated transient response is compared to the available measured transient response of a four-cylinder low-speed marine diesel engine. The model is capable of following the measured response with favourable agreement. The exhaust gas receiver heat transfer coefficient was derived indirectly by fitting the simulated transient response to the measured data. The use of the engine model is demonstrated through the propulsion system simulation of an ice-breaking tanker. The main engine of the vessel is an eight- cylinder low-speed diesel engine driving a ducted controllable pitch propeller. The low-speed diesel engine model proved its capability to simulate engine transient response during manoeuvring and during propeller-ice interaction.

• Supplemental Notes:
  • Acta Polytechnica Scandinavica, Mech Engng Series n 111, 1993 [106 p, 203 ref, 6 tab, 38 fig]
• Authors:
  • LARMI, M
• Publication Date: 1993

Language

• English

Subject/Index Terms

• TRT Terms: Cargo ships; Icebreakers; Transient analyzers
• Uncontrolled Terms: Transient response
• Old TRIS Terms: Slow speed diesel
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00708089
• Record Type: Publication
• Source Agency: British Maritime Technology
• Files: TRIS
• Created Date: Aug 14 1995 12:00AM