Page 47 - Introduction to Marine Engineering
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34  Diesel engines

                                       REMOTE  AIR  STARTING  VALVE
                     STARTING  AIR
                      SUPPLY
                                                               FLAME  TRAP











































                           EMERGENCY  CONTROL                   CONSOLE  CONTROL
                                BOX                                 BOX
                 Figure  2.21 Starting air  system

                 cylinder air start  valve  will admit compressed  air into the cylinder. The
                 opening  of  the  cylinder  valve  and  the  remote  operating  valve  is
                 controlled  by a  pilot  air  system.  The  pilot air  is drawn from  the  large
                 pipe  and  passes  to  a  pilot  air  control  valve  which  is operated  by  the
                 engine air start lever.
                   When  the  air start lever is operated, a supply of  pilot air enables  the
                 remote valve to open. Pilot air for the appropriate direction of operation
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