The Effect of Back Pressure on the Operation of a Disel Engine

Abstract

The Ricardo Wave engine modelling software has been used to examine the effect of increased back pressure on a turbocharged diesel engine. Steady state and varying back pressure are considered. The results show that high back pressure has a significant adverse effect on the operation and reliability of the engine. The response to fluctuating back pressure is strongly non-linear, and depends on the amplitude and period of the fluctuations. For a constant output load, the exhaust gas temperature increases significantly with increasing back pressure, leading to reduced engine reliability. Due to the speed control strategy used on this engine, speed fluctuations are an unavoidable consequence of imposed back pressure fluctuations.

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Document Details

Document Type
Technical Report
Publication Date
Feb 01, 2011
Accession Number
ADA542137

Entities

People

  • Peter Hield

Tags

Communities of Interest

  • Ground and Sea Platforms
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Air Flow
  • Back Pressure
  • Compressors
  • Control Systems
  • Energy Systems
  • Engines
  • Exhaust Gases
  • Exhaust Systems
  • Flow
  • Fuel Consumption
  • Gas Flow
  • Mass Flow
  • Propulsion Systems
  • Specific Heat
  • Speed Regulators
  • Steady State
  • Turbochargers

Fields of Study

  • Engineering

Readers

  • Fluid Dynamics.
  • Internal Combustion Engine (ICE) Technology.
  • Theoretical Analysis.