The conditions of normal operation for reciprocating internal combustion engines with which this paper is concerned are those specified in ISO Standard No. 3046 issued in February 1975. The conditions to be taken into account for the establishment of service power are stated and a further definition of normal operation is derived. The idealised operating limits for continuous and intermittent operation are shown graphically. The causes and effects of deviations from these limits are discussed in two main sections of the paper, (1) deviations from the rated conditions and (2) deviations from trouble-free running. In (1) are considered problems of thermal loading of the combustion chamber components arising from operation at reduced revolutions. In (2) a typical arrangement of a 12-cylinder medium-speed engine, elastic coupling, gearbox, thrust bearing and a variable-pitch propeller is taken as an example and problems of vibration and torsional stresses arising from irregularities in the combustion process, e.g. failure of a cylinder, are discussed. The paper concludes with some design guidelines for the engine manufacturer and the operator.

  • Corporate Authors:

    Springer Verlag

    175 5th Avenue
    New York, NY  United States  10010
  • Authors:
    • Gutschow, G
  • Publication Date: 1975


  • German

Media Info

Subject/Index Terms

Filing Info

  • Accession Number: 00149291
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Mar 30 1977 12:00AM