Controlling the heat release in HCCI combustion of DME with methanol and EGR

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Controlling the heat release in HCCI combustion of DME with methanol and EGR

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Keywords
  • 25
  • The Effects Of Methanol And Egr On Hcci Combustion Of Dimethyl Ether Have Been Tested Separately In
  • The Engine Was Equipped With A Common Rail Injection System Which Allowed For Random Injection Of Dm
  • The Engine Could Therefore Be Operated Either As A Normal Di Ci Engine Or
  • By Advancing The Injection Timing 360 Cad
  • As An Hcci Engine
  • The Compression Ratio Of The Engine Was Reduced To 14
  • 5 By Enlarging The Piston Bowls
  • The Engine Was Operated In Hcci Mode With Dme At An Equivalence Ratio Of 0
  • To Retard The Combustion Timing
  • Methanol Was Port Fuel Injected And The Optimum Quantity Required Was Determined
  • The Added Methanol Increased The Bmep By Increasing The Total Heat Release And Retarding The Combust
  • Engine Knock Was Reduced With Increasing Quantities Of Methanol
  • The Highest Bmep Was Achieved When The Equivalence Ratio Of Methanol Was Around 0
  • 12 At 1000 Rpm
  • And Around 0
  • 76 At 1800 Rpm
  • Egr Was Also Used To Retarding The Timing
  • With A Moderate Amount Of Egr Theeffect On The Combustion Was Not Notable
  • But As The Equivalence Ratio Approached Unity The Combustion Was Increasingly Delayed And The Rate O
  • Engine Knock Seized Entirely As The Egr Ratio Was Increased Above 60 %
  • The Bmep Gain Was However Moderate
  • Since Lower Cylinder Pressures At Higher Egr Quantities Counteracted The Positive Effects Of Combust

Abstract

Combustion and radiation modeling of laminar premixed flames using OpenFOAM: A numerical investigation of radiative heat transfer in the RADIADE project - DTU Orbit (02/06/14) Combustion and radiation modeling of laminar premixed flames using OpenFOAM: A numerical investigation of radiative heat transfer in the RADIADE project - DTU Orbit (02/06/14) Haider, S, Pang, KM, Ivarsson, A & Schramm, J 2013, 'Combustion and radiation modeling of laminar premixed flames using OpenFOAM: A numerical investigation of radiative heat transfer in the RADIADE project'. in Papers, CIMAC Congress 2013. Conseil International des Machines a Combustion. CIMAC Paper, no. 274

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