Sunday, April 19, 2020

Under piston pressure

  • Is a type of constant pressure charging system  
  • Air charged by T/C is passed through CAC into first stage manifold, and then through non return valves into second stage and under piston space  
  • In down stroke, piston under side compress further the scavenge air  
  • Differential pressure shuts the inlet non-return valves as scavenge ports are uncovered, and a pulse effect is given to cylinder  

  • Assist tangential swirl and ensure complete evacuation of remaining exhaust gas  
  • No auxiliary blower may be required, during manoeuvring

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