A Partially Premixed Combustion Application for Power Improvement in Military Diesel Engines

Abstract

Due to increasing weight in military platforms, engine power needs to be increased in order to maintain performance. Diesel engine power is limited by soot formation, which is an indicator of incomplete fuel combustion due to lack of oxygen and poor mixing of the fuel and air. Once the soot limit is reached in a conventional diesel engine, further fuel increases will not result in more engine power since both the time for combustion (i.e. engine RPM)and oxygen are limited. An alternative approach is needed to both deliver and convert fuel energy in a diesel engines combustion chamber. Partially Premixed Combustion (PPC) allows for better mixing of the air and fuel in the combustion chamber, leading to lower combustion temperatures and higher flame speed (shorter burn duration) as compared to conventional diesel combustion. PPC delivers additional fuel to the combustion chamber in internal combustion engines through the air intake system in addition to the in-cylinder (i.e. combustion chamber) injection event, allowing for increased power opportunities.

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Document Details

Document Type
Technical Report
Publication Date
May 21, 2018
Accession Number
AD1054420

Entities

People

  • Michael D. Walker

Organizations

  • United States Naval Academy

Tags

Communities of Interest

  • Energy and Power Technologies
  • Weapons Technologies

DTIC Thesaurus Topics

  • Air Intakes
  • Alkanes
  • Burning Rate
  • Chemical Synthesis
  • Chemistry
  • Combustion
  • Combustion Chambers
  • Compression Ignition
  • Compression Ignition Engines
  • Detectors
  • Diesel Engines
  • Flash Point
  • Heat Transfer
  • Ignition
  • Ignition Lag
  • Internal Combustion Engines
  • United States Naval Academy

Readers

  • Internal Combustion Engine (ICE) Technology.
  • Systems Analysis and Design