The Generic Diesel GenDies research program'

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The Generic Diesel (GenDies) research program.

• Initiated February 2001
• Started January 2002
• Purpose The main purpose of the Generic Diesel
  engine research program is to create an
  experimental environment for validation of
  advanced CFD-models, for studying basic phenomena
  and futuristic concepts of common interest and
  for generation of data sets.

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The phases of diesel combustion
Fuel injection
Heat release rate
Ignition
delay
Premixed
comb.
Mixing-controlled
comb.
Late combustion phase
Self ignition
Time
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Extended Ignition Delay Period - PPC
Heat release rate
Premixed Combustion
Fuel injection
Diffusive combustion
Ignition Delay Period
Mixture formation
Time
LTR
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Proposed projects for GenDies III
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1
2
5
Project 1Research on the left side of the soot
bump

• Systematic analysis of the factors and mechanisms
  that are responsible for the sudden increase in
  soot emissions when the EGR rate is increased.
• What is dimensioning for the engine out soot
  emissions soot formation or soot oxidation?
• Variables are IMEP, injection pressure, timing
  and rate, charge oxygen concentration, swirl,
  ignition delay, etc.

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Project 2Research on the right side of the soot
bump

• Systematic analysis of the factors and mechanisms
  that are responsible for the sudden decrease in
  soot emissions when the EGR rate is increased.
• What is dimensioning for the engine out soot
  emissions at low temperature combustion soot
  formation or soot oxidation?
• Is premixed combustion a prerequisite for soot
  reduction at high EGR rates?
• Variables are injection pressure, timing and
  rate, charge oxygen concentration, swirl,
  ignition delay, etc.

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Project 3Research on the right side of the soot
bump

• Theoretical analysis of the factors and
  mechanisms that are responsible for the increase
  in CO an HC emissions when the EGR rate is
  increased.
• Is it possible to limit CO and HC emissions at
  the same time as soot emissions are reduced?
• How is the CO and HC emissions at high EGR rates
  related to the degree of pre-mixed combustion?

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Project 4Detailed heat release analysis

• Platshållare för Ulf Aronssons projekt