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Topas Blow-By Measurement Hardware
BA, Topas GmbH
Crankcase Ventilation
In-line Measurement of Oil Aerosols
Measurement Hardware for
Blow-By Oil Separation
Colin Jenkins – General Manager - Adaptive Instruments Ltd
Cambridge Particle Meeting 18th May 2012
Topas Blow-By Measurement Hardware
BA, Topas GmbH
Absolute Filter GMS141 (for Gravimetric Analysis)
Photometer PAP 610 / 612 (for Optical Measurement)
Content
Topas Blow-By Measurement Hardware
BA, Topas GmbH
State of the Art of Benchmarking
Oil Mist Separators
Laboratory
Disadvantages
- Low Time Resolution
- Expensive Cost to Value Ratio
- Possibility of Particle Changes during Storing
- High Filtration Efficiency -> Long Period of Measurement Time -> High Operational Expense
- Gravimetric Measurement
- Fractional Efficiency Measurement
Engine
- Gravimetric Measurement
- Accompanying Measures in Laboratory
Topas Blow-By Measurement Hardware
BA, Topas GmbH
Gravimetric Analysis
Optical Measurement
System
Advancement / Improvement
Combination of Extinction Measurement and
Gravimetric Analysis
Influence
Basic
Conditio
ns
Topas Blow-By Measurement Hardware
BA, Topas GmbH
measurement
equipment
GMS141
PAP610
PAP612
SPT140
Product Development
Gravimetric 0 Optical Test Stand
Topas Blow-By Measurement Hardware
BA, Topas GmbH
GMS141 (Gravimetric Measurement System)
- 2 Types of Test Filter useable
- Filter Cartridge
- Blank Filter (d=110mm)
- heatable Test Filter Box
- Two independent Sections: Bypass / Measuring
- Differential Pressure Measurement Test Filter
- Temperature, pressure and volume flow
Measurement of blow-by
- Manually or automatic operated Valve Controlling
- Automatic: Controlling by Time / Differential
Pressure
- Device Control with SPS by Web Browser
Topas Blow-By Measurement Hardware
BA, Topas GmbH
GMS 141
Process Diagram
T
Heatable Bypass
Section
Measurement
Section
Valve
Filter
dp p
Topas Blow-By Measurement Hardware
BA, Topas GmbH
VolllastTeillast
Nulllast
n = 4000 min-1
n = 3000 min-1
n = 2000 min-1
0
0,5
1
1,5
2
2,5
3
mp
[g
/h]
Engine
Frequency
Engine Load
GMS 141
Example Measurement Static Nodes
source: DA, BA, Mahle GmbH
Oil
Ma
ss
Flo
w
Dynamic Range
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 610 (Process Aerosol Photometer)
Measurement
Range of
Concentration
Approx. 0.1 ... 3 g/m³
Droplet Size
Range
Approx. 0.1 ... 1.5 µm
Extinction length 300
Temperature 110°C (adjustable)
Wave Length 470 to 875 nm
Specifications
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 610
Measurement Data (Photometer Signal) – adjustable Nozzle Pre-Pressure
(gravimetric)
R² = 0,9994
R² = 0,9997
0
0,2
0,4
0,6
0,8
1
1,2
0,000 0,100 0,200 0,300 0,400 0,500 0,600
Ex
tin
kti
on
Konzentration [g/m³]
Red
Ir
Linear (Red)
Linear (Ir)
1,2 g/h 1,49 g/h
1,75 g/h 2,02 g/h
2,31 g/h 2,89 g/h
3,24 g/h
Concentration [g/m³]
Ex
tin
cti
on
[1
]
Topas Blow-By Measurement Hardware
BA, Topas GmbH
Engine Measurement
0
10
20
30
40
50
60
70
0 100 200 300 400 500 600 700
Trü
bu
ng
[T
E/F
]
Zeit t [s]
n = 2000 min-1
n = 4000 min-1
(MB4/5; 0-40/20 TE/F; n = 2000 / 4000 min-1; Md = Volllast (350 / 270 Nm)) n1 [rpm]
n2 [rpm]
Dynamic Test, switching between two Engine Frequency
oil
co
nc
en
tra
tio
n
Time Source: DA, BA, Mahle GmbH
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 610
Extinction Ratio of 4 Wave Length for Spherical Oil Particle (calculated)
source: Fa. Mahle Gmbh, Dr. Sauter,
Aachener Motorenkolloquium
Droplet Size Distributions of
Reciprocating Engines
0
1
2
3
4
5
6
100 1000 10000
Ex
-Ve
rhä
ltn
is
Partiklegröße [nm]
mp=1.46, monodispers
670 nm / 830 nm
470 nm / 875 nm
Particle Size [nm]
Ex
tin
cti
on
Ra
tio
[1
]
polysemy
relevant range of particle
size
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 610
Example Filter Measurement on Engine Test Stand
Measurement Period Filter
Time Source: Fa. Mahle Gmbh, Dr. Sauter,
Test Report
Tra
nsm
issio
n / G
ravim
etr
ic
Ma
ss C
on
ce
ntr
ati
on
Topas Blow-By Measurement Hardware
BA, Topas GmbH
Copyright © 2010 Topas GmbH
PAP 612 (Process Aerosol Photometer)
- Scattered Light Arrangement
(Measurement Angle 90°)
- Extinction Measurement
- Wall Film Detection
-2 Wave Length
(estimate of Particle Size)
- Compact Dimensions
Topas Blow-By Measurement Hardware
BA, Topas GmbH
Assembly
Detector 3
LED1
LED3
Detector 1
Detector 3
LED2
LED4
Detector 1
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 612
R² = 0,9983
R² = 0,9926
0
0,2
0,4
0,6
0,8
1
0
0,05
0,1
0,15
0,2
0,25
0 1 2 3 4 5
Gravimetric Concentration
[g/m³]
Ex
tin
cti
on
[1
]
Scatt
eri
ng
[1
]
Topas Blow-By Measurement Hardware
BA, Topas GmbH
PAP 612
0
0,1
0,2
0,3
0,4
0,5
0,6
0,7
0,8
0,9
1
0
0,5
1
1,5
2
2,5
11:52 11:54 11:55 11:57 11:58 12:00 12:01 12:02 12:04 12:05
Scattering
Sc-1
Sc-2
Extinction
Ex-1
Ex-2
WF