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Jan Gåsste, AVL MTCHua Lu-Karlsson, ScaniaLondon, 2009-03-30
PMP Heavy-Duty Inter‑Laboratory Exercise Validation Exercise at AVL MTC
2Jan Gåsste, AVL MTC, 2008.08.20
Background
Test Setup
Results
Summary
Validation Exercise at AVL MTC
3Jan Gåsste, AVL MTC, 2008.08.20
This study is a part of the PMP Validation Program and it is financed by the Swedish Road Administration.
The validation program stipulated the use of both full flow and partial flow systems.
Three different PMP-systems were used for PN measurements at our location.
Background
4Jan Gåsste, AVL MTC, 2008.08.20
Test Setup
APC 489 AVL MTC’s
Extra Instrument 4m
he
ate
d li
ne
47
°C
263 cm
301cm
791cm
dilution tunnel
HEPALEPAact. carbon
Dilution air
PM47±5°C
50 lpm
25 lpm
72m3/min
HEPA
Primary dilution tunnel
TX40 47mm
CRT
ENGINE
500 cm (50 c m)
SPCS-19 Golden Instrument 1
30
cm
(8
cm
)
AVL SPC 472 Partial Flow System
SPCS-20 Golden Instrument 2
6Jan Gåsste, AVL MTC, 2008.08.20
ResultsPM Emission Measurement
0
0.001
0.002
0.003
0.004
0.005
0.006
0.007
0.008
WHTC cold WHTC warm WHSC ETC ESC
PM
em
issi
on
s (g
/kW
h)
PM-CVS PM-Partial Flow
y = 0,3283x + 0,0008
R2 = 0,2633
0,000
0,001
0,002
0,003
0,004
0,005
0,000 0,001 0,002 0,003 0,004 0,005 0,006 0,007 0,008
CVS PM emissions (g/kWh)
Pa
rtia
l flo
w s
yste
m P
M e
mis
sio
ns
(g/k
Wh
)
7Jan Gåsste, AVL MTC, 2008.08.20
1,E+03
1,E+05
1,E+07
1,E+09
1,E+11
1,E+13
WHTC cold WHTC warm WHSC ETC ESC
Fu
ll flo
w a
nd
pa
rtia
l flo
w s
yste
m P
N e
mis
sio
ns
(#/k
Wh
)
Full flow Partial flow system
21 %
-43 %
-46 % -52 %
-13 %
ResultsPN Emission Measurement with the Golden Instruments
y = 1,2121x - 6E+09
R2 = 0,9993
0
2E+11
4E+11
6E+11
8E+11
0 2E+11 4E+11 6E+11 8E+11
CVS PN emissions (#/kWh)
Pa
rtia
l flo
w s
ys
tem
PN
em
iss
ion
s (
#/k
Wh
)
8Jan Gåsste, AVL MTC, 2008.08.20
1,E+03
1,E+05
1,E+07
1,E+09
1,E+11
1,E+13
WHTC cold WHTC warm WHSC ETC ESC
PN
em
issi
on
s (#
/kW
h)
Golden APC
40%
33%
27%28%31%
Results: PN Emission Measurement with SPCS 19 & APC489 from CVS
y = 1,3967x - 9E+08
R2 = 0,9998
0
2E+11
4E+11
6E+11
8E+11
1E+12
0 1E+11 2E+11 3E+11 4E+11 5E+11 6E+11 7E+11
CVS Golden instrument PN emissions (#/kWh)
CV
S A
PC
PN
em
issi
on
s (#
/kW
h)
9Jan Gåsste, AVL MTC, 2008.08.20
Results: On Line PN Emission Measurements in cold WHTC test with all instruments
1.E+00
1.E+01
1.E+02
1.E+03
1.E+04
1.E+05
1.E+06
0 200 400 600 800 1000 1200 1400 1600 1800
Time (s)
Par
tical
num
ber
emis
sion
s fr
om a
col
d W
HT
C t
est
(#/c
m3)
SPCS-19 SPCS-20 APC
10Jan Gåsste, AVL MTC, 2008.08.20
Results: On Line PN Emission Measurements in the ESC test with all instruments
1,E+00
1,E+01
1,E+02
1,E+03
1,E+04
1,E+05
0 200 400 600 800 1000 1200 1400 1600
Time (s)
Pa
rtic
le n
umb
er e
mis
sion
s fr
om a
ES
C t
est
(#/c
m3)
SPCS-19 SPCS-20 APC
Idle
11Jan Gåsste, AVL MTC, 2008.08.20
• WHSC showed lower PN-emissions compared to ESC and the ETC showed lower emissions than both the warm and the cold WHTC
• The Full Flow System showed higher PM-emissions compared to the partial flow system and poor correlation between the two sampling systems at this low PM levels.
• The Full Flow System showed higher PN-emissions compared to the partial flow system for all cycles except the cold WHTC and good correlation between the two sampling systems.
• Good correlation was shown between the Golden Instrument and our extra APC489 system.
• The online data had a similar trace independent of the manufacturer of the PMP-system. This indicates that the PMP method is robust.
Summary / Conclusions
• PM emissions generally very low with the tested engine.
12Jan Gåsste, AVL MTC, 2008.08.20
Questions?
Don’t hesitate to contact…
Jan GåssteCOOAVL MTCP.O. Box 223, SE-136 23 HaningeSweden
Phone: +46 8 500 656 00Direct: +46 8 500 656 90Fax: +46 8 500 283 28E-mail: [email protected] page: www.avl.com/mtc
