"MINI-BORE" LOW SPEED CROSSHEAD ENGINES LAUNCHED BY MITSUBISHI

The latest introduction to the Mitsubishi revised UEC-H range of low-speed two-stroke crosshead engines is a 370 and 450 mm bore series. The development of the UE-H long- stroke series of constant-pressure turbocharged uniflow scavenged engines has already been described. The new engines share the essential characteristics and operational aims of the 520 and 600 mm bore designs in the Mitsubishi programme, while achieving compactness, greater accessibility and ease of maintenance reduced number of components, and more simplified operation. The main technical features of the design are detailed in diagrams. Of particular interest is Mitsubishi's departure from its traditional three-valve system to employ only one exhaust valve per cylinder. This "Univalve" arrangement simplifies cylinder-cover construction and reduces maintenance. The water-cooled valve seat ensures a longer life and the mechanical cooled valve seat ensures a longer life and the mechanical drive mechanism for the valve incorporates an oil cushion to absorb the heavy impact of the tappet and thermal expansion of the valve spindle, making for quieter operation.

  • Availability:
  • Corporate Authors:

    IPC Industrial Press Limited

    Quadrant House, The Quadrant
    Sutton, Surrey,   England 
  • Publication Date: 1980-7

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Filing Info

  • Accession Number: 00323269
  • Record Type: Publication
  • Source Agency: British Ship Research Association
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM