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Kompetenscentrum
Förbränningsprocesser, KCFP
Prof. Bengt Johansson
Div. of Combustion Engines,
Dept. of Energy Sciences
Kompetenscentrum
Förbränningsprocesser, KCFP
• 1995-2005 ett centrum för grundläggande studier
av förbränning, både stationär och instationär
• 1/3 STEM, 1/3 Industri, 1/3 Lund Universitet, totalt
minst 18 Mkr/år dvs. ca. 200 mkr omsatt
• Från 1/1 2006 ett centrum för motorförbränning
• Nu ca. 22 Mkr/år varav STEM 7 Mkr.
• Alla typer av förbränning skall studeras men
fokus på den nya generationen med låg NOx,
HCCI
HCCI research in the world
The first conference dedicated
to HCCI
From keynote talk by Pierre Duret
at IFP International Congress Nov. 26-27 2001.
More
recent
Papers on HCCI the last 3.5 years
From keynote talk by Pierre Duret
at IFP International Congress Sept. 22-23 2004.
HCCI in Lund
Combustion activities in
KCFP
1. Basic engine studies
2. Laser diagnostics
3. Combustion modeling - Chemical
kinetics
4. Closed loop combustion control
5. Fuel effects
HCCI in Lund 1997
Per Amnéus
Magnus Christensen
Mattias Richter
HCCI-Projects 1999
Per Amnéus
Magnus Christensen
Mattias Richter
Jan-Ola Olsson
Anders Hultqvist
Olof
Erlandsson
HCCI-Projects 2000
Göran Haraldsson
Jari Hyvönen
Per Amnéus Magnus Christensen
Per Tunestål Jan-Ola Olsson
Mattias Richter
Anders Hultqvist
Olof
Erlandsson
HCCI-Projects 2001
Henrik Nordgren
Leif Hildingsson
Petter Strand
Göran Haraldsson
Jari Hyvönen
Per Amnéus Magnus Christensen
Per Tunestål Jan-Ola Olsson
Mattias Richter
Anders Hultqvist
Olof
Erlandsson
HCCI-Projects 2003
Henrik Nordgren
Leif Hildingsson
Petter Strand
Göran Haraldsson
Jari Hyvönen
Per Amnéus Magnus Christensen
Per Tunestål Jan-Ola Olsson
Mattias Richter
(Olof
Erlandsson)
HCCI-Projects 2005
Henrik Nordgren
Leif Hildingsson
Petter Strand
Göran Haraldsson
Jari Hyvönen
Per Amnéus Andreas Vressner
Per Tunestål Roland Pfieffer
Mattias Richter
Ryo Hasegawa
HCCI?
HCCI
=
Homogeneous Charge
Compression Ignition

Kompressionsantändning
av en förblandad
bränsle/luft-blandning
Why HCCI?
HCCI Emissions vs. diesel
AutoTechnology
Oct. 2002, p 54
HCCI
USA 2007
PM
0,01
*
0,00
0
0,05
NOx
0,5
Brake fuel efficiency for 1.6
liter four cylinder VW engine
Clean locally or globally?
Local emissions:
NOx
HC
CO
PM
Global emission
(Greenhouse
effect):
CO2 i.e. fuel
consumption
Environmentally friendly ≡ no
CO2?
A CO2 neutral alternative
Local Emissions ?
Some emission statistics from
New York by the turn of the
century…
• 200 m3 liquid emissions per day
• 1000 ton solid emissions per day
• An army of tenths of thousands
worked with transporting the
emissions out from the city
Now time for the next step
Otto
Diesel
HCCI
SACI=
Spark Assisted
Compression Ignition
SACI
PPC
PPC=
Partially Premixed
Combustion
Partially premixed combustion,
PPC
5000
1000
4000
800
3000
600
2000
400
1000
200
-180
-160
-140
-120
-100
-80
SOI [ATDC]
-60
-40
-20
NOx [ppm]
HC [ppm]
Spridare 8x0.12x90 & 8x0.12x150, Iso-oktan, CR-tryck 750 bar, Duration 0,6 ms = 3.6 CAD
6000
1200
• Def: region between truly
homogeneous
combustion, HCCI, and
diffusion controlled
combustion, diesel
• Trade-off between NOx
and HC, soot typical
• Combustion process not
well known
• Soot the key feature
PPC potential
Thank you