Stratus DPF Overview - Spinner II® Products

Transcription

Stratus DPF Overview - Spinner II® Products
STRATUS
DIESEL PARTICULATE FILTERS
Exhaust Gas Aftertreatment Technologies
Part 1
Diesel Emissions and Their Hazardous Pollutants
1
Diesel emissions and their
hazardous pollutants
Diesel Emissions and Their
Hazardous Pollutants Carbon Dioxide
• colourless
• odourless
• greenhouse gas
Water
Environmental
Hazard
Nitrogen Oxides
• colourless
• odourless
• harmless
Very Toxic
CO2
H 2O
NOx
DIESEL
Carbon Monoxide
•
•
•
•
colourless
Toxic
odourless
greenhouse gas
danger of suffocation
Hydrocarbon
HC
CO
• colourless Î brown
• acrid-smelling
• greenhouse gas, acid rain
PM
•
•
•
•
colourless
fuel-smelling
greenhouse gas
carcinogen
Particulate Matter (PM)
•
•
•
•
gray or black cloud
burnt-smelling
greenhouse effect
carcinogenic
Very Toxic
Toxic
Diesel Exhaust Gas Aftertreatment Technologies – Overview
Diesel
Emissions
Diesel-Oxidation-Catalyst
Exhaust
Technology
(DOC)
c
Diesel Particulate Filter Selective Catalytic Reduction
(SCR)
Stage 1
c > 95 % Reduction of HC and CO
d > 99 % Reduction of PM
e up to 90% Reduction of NOx
e
d
c
CRT System
Nitrogen Oxides
(NOx)
Particulate Matter
(PM)
Hydrocarbon (HC)
Carbon Monoxide (CO)
d
SCR System
CRT + SCR = SCRT®
Stage 1Stufe 1
d c
e
Stage 2
Stage 2
What is Particulate Matter (PM)?
ƒ
Particles
from
combustion
ƒ
Gey area
diesel soot:
The term particulate matter (PM) is used to
describe airborne solid particles and/or droplets.
The particles vary in size, composition & origin.
The definition was established by the US
Environmental Protection Agency (EPA) in 1987:
“National Air Quality”-Standard for PM.
Minerals
1st scope: PM10 (coarse & fine particles)
Salt
Minerals
Electron micrograph of PM sampled on a filter near a
street; diesel soot (small grey spheres) dominates the
sample
ƒ PM10 => Basis for EC limit values (since 01.01.05)
ƒ Used for description of particles with aerodynamic
diameter < 10 䃛m
ƒ PM10-sized particles may reach the upper part of the
airways and lung
2nd scope: PM2.5 (fine particles)
ƒ Smaller particles penetrate more deeply into the lung
ƒ Alveolar
Source: World Health Organization (WHO): “Health Aspects of Air Pollution – Results from the WHO
Project “Systematic Review of Health Aspects of Air Pollution in Europe” / Federal Environment
Agency (C. Trimbacher), Vienna
Chemical Composition of Diesel Particles
Typical Soot Composition:
Sulfates
12%
Ash
10%
Oil, unburned
23%
Fuel, unburned
6%
The composition depends on:
- Operating conditions
- Fuel (S)
- Lubricating oil
Other
5%
Carbon
44%
Effects of Particulate Matters on Climate and Health
• Diesel particulate matter is one
contributor to global warming
• Diesel exhaust gases are carcinogenic
(WHO 06/12)
Consequences:
• Regulations to limit emissions
• Europe: Low emission zones
• Activities to improve working
conditions
Irritation of mucous membrandes
Constriction of bronchial tubes
Ultrafine particles
Enter the
circulatory system
Lungs‘ capacity for
(Higher risk of
cancer)
Damage to
alveoli
self-cleaning is
impaired
Parts of the body attacked
Particle size
Nose and pharynx
5 – 10
䃛m
Airways
3– 5
䃛m
Bronchial tubes
2– 3
䃛m
Bronchioles
1– 2
䃛m
Alveoli
0,1 – 1
䃛m
Negative Health Effects Caused By The Pollutant - PM
Effects related to short-term exposure
Effects related to long-term exposure
Lung inflammatory reactions
Increase in lower respiratory symptoms
Respiratory symptoms
Reduction in lung function in children
Adverse effects on the cardiovascular system
Increase in chronic obstructive pulmonary
disease
Increase in medication usage
Reduction in lung function in adults
Increase in hospital admissions
ÎReduction in life expectancy, owing mainly to
cardiopulmonary mortality and probably to lung
cancer (2 % caused by air polution)
Î Increase in mortality
Î Increase in mortality
WHO: 2,4 Mio. death rate / year)
Source: World Health Organization (WHO): “Health Aspects of Air Pollution “ – Results from the WHO Project “Systematic Review of Health Aspects of Air Pollution in Europe” / Federal
Environment Agency (C. Trimbacher), Vienna
Publication in June 2012
Diesel exhaust gases are definitely
carcinogenic.
They are as hazardous as arsenic,
asbestos and mustard gas.
Now it is clear that exhaust gases from diesel engines
causes cancer.
(Scientists from the WHO in June 2012)
Diesel Pollutants and Exhaust Technologies
Diesel
Emissions
Exhaust
Technology
Particulate Matter
Hydrocarbon /
Carbon Monoxide
(PM)
(HC / CO)
Diesel Particulate
Filter
Diesel-OxidationCatalyst
(DPF)
(DOC)
Reduction of Soot Particles
Nitrogen Oxides
(NOx)
Selective Catalytic
Reduction
(SCR)
Diesel Exhaust Gas Aftertreatment Technologies – Overview
Diesel
Emissions
Exhaust
Technology
Particulate Matter
(PM)
Hydrocarbon (HC)
Carbon Monoxide (CO)
Nitrogen Oxides
(NOx)
Diesel Particulate Filter
Diesel-Oxidation-Catalyst
Selective Catalytic Reduction
(DOC)
c
(SCR)
e
d
CRT
CRT System
Stage 1
c > 99 % Reduction of PM
d > 95 % Reduction of HC + CO
e Up to 90% Reduction of NOx
d
SCR
c
SCR System
CRT + SCR = SCRT®
c d
Stage 1
e
Stage 2
Stufe 2
Stage 2
Diesel Particulate Filters – Applications
City-Filter®
CRT-System
Diesel Particulate Filters
Description
Filtration Efficiency
Regeneration
Wall flow filter
(closed system)
Partial flow filter
(open system)
Efficiency: 90 - 99,9 %
Efficiency: Ø 50 %
Active RegenerationSupporting measures:
• post-injection
(engine modifications)
• Fuel-borne catalyst
(Addition of additive)
• Heating elements
• Catalytic coating
• Diesel oxidation catalyst (DOC)
• Continuously Regeneration
Technology = CRT
• Continuously Regeneration
Technology = CRT
• Catalytic Regeneration
• No intervention in
engine management system
• No sensors
Wall Flow Filters and Their
Phenomenoly of Soot Loading
• Ceramic
• SMF® - Sintered Metal Filter
Phenomenology of Soot Loading – Ceramic versus SMF®
The porous medium works as a surface filter
Sieving effect 1: Filter cake is still porous. This effect
can especially be detected with ash loading. Less
back pressure drop for ash accumulation .
Sieving effect 2: Filter cake tends to clueing and
blocking. This may lead to back pressure. Therefore
regeneration is strictly required (Burn-off soot).
Capability to deep filtration increases filter performance – especially in case of “clean filters”
Sieving effect 3: Larger particles stick to narrow
parts of pore channels. Larger soot agglomerates
may be filtered this way. Regeneration also burns
those off.
Adsorption: Particles that are not kept back by the
sieving effects, adhere to the surfaces of the pore
channels. This mechanism mostly affects particles < 1
µm. This causes high efficiency - even for new filters!
Phenomenology of Soot Loading – Ceramic versus SMF®
60 Min
10 Min
5 Min
First areas are covered within 5 min. Mostly found on the surface (䂴p Ï).
After 10 min a nearly complete closed soot cake can be detected (䂴p Ï).
Filter efficiency reaches final value. Pores in soot layer are very small.
Examples of Closed Systems
Emission Technology
Range of Application:
LDV, Bus, Non-road Machinery
Regeneration:
- AR
- FBC
- CRT
Type of Filter:
Sintered Metal
SCRT® System
General System Description of Sintered Metal Filter Open Design
Porous Sintered Metal
Bypass: Adjustable
between 30 - 80%
filtration efficiency at
constant backpressure
Engine exhaust gas
Cleaned exhaust gas
The exhaust from the engine passes the porous sintered metal and soot particles are
retained by the filter media. By installing an overflow area (bypass) the filter efficiency
can be adjusted between 30 and 80 %.
Materials for Filtration:
- Ceramic
Î Cordierite for Example
Materials for Soot Filtration
SiC:
Wall flow filter silicon carbide
Ceramic filter
Cor.:
Wall flow Cordierite
SMF®: Sintered metal filter
SMF®
SiC
Cor.
Application Advantages
Comparing Material Properties:
%
μm
SMF®
48
15
Cordierite
50
20
SiC
50
12
Density, porous
g/cm³
4.2
1.3
1.5
Thermal Expansion
Thermal Conductivity, dense
ppm/K
W/m/K
17
15
1
1.8
4
100
Heat Capacity, dense, 500 °C J/cm³/K
Heat Capacity, porous, 500 °C J/cm³/K
Heat Capacity, system, 500 °C J/l/K
4.2
2.2
2,8
1.4
3.6
1.8
550
540
630
Porosity
Mean Pore Size (Mercury)
Application Advantages
Micrograph, SMF
Micrograph, SiC
Micrograph, Cordierite
0,5 mm
Application Advantages
Different Porous Structures:
Cordierite, Flow in / Flow out side
Cordierite, Flow in side on top
STRATUS
DIESEL PARTICULATE FILTERS
Exhaust Gas Aftertreatment Technologies
Part 2
Diesel Emissions a Hazardous Pollutant
Application Advantages and Range of Applications
Different Porous Structures:
SiC, Flow in / Flow outside
SiC, Flow inside on top
CRT System with ceramic filter Î Cordierite
Particle reduced exhaust gas
Engine exhaust gas
Particle reduced exhaust gas
Particulate filter
Engine exhaust gas
Cleaned exhaust gas
Cordierite Filter Construction
1
Engine exhaust gas
2
Cleaned exhaust gas
3
Filter plug
4
Retained particles + ash
5
Filter wall
Blockage of Cordierite Channels / SiC-Monoliths by Ash Accumulation
• High increase of back
pressure due to narrowed
ducts by ash accumulation.
• Duct diameter works with
power of 4 for the partly
pressure drop.
• Reduced filtration area.
Materials for Filtration:
– Sintered Metal Filter SMF®
SMF® – Sintered Metal Filter
Step 1: For further processing the high
alloy metal powder is mixed with a
binder
Step 2: The pourable powder mix is
applied to reinforcing expanded metal
Step 3: After the sintering process the powder
particles are bonded with each other and the
expanded metal
Step 4: Sheets are punched out of the porose
metal foil and reinforced with a hem band
Step 5: A spacer is inserted into the filter
pocket for stabilization purposes
Step 6: After welding the individual filter pockets to a filter module, the module is inserted into the a housing and complemented with further components to a particulate filter system (e.g. pipes, conuses)
SMF® Sintered Metal Filter - Various Designs
Filter box
Original-DPF
City-Filter®
Satellite-filter
Filter element
Filter Material: Process Steps
Expanded Metal
Filter Pocket
Additives
Mixing
Coating
Sintering
Binder
Metal Powder
Due to heat and presure the metal powder is strongly fixed on the Expanded Metal
Assembly
Product
Surface of Sintered Metal SMF®
SEM-Picture, Detail
SEM-Picture, Surface - Flow inside
Materials for Filtration:
– Coated Sintered Metal Filter CSMF®
Application Areas and Regeneration Technologies
Application Areas
and Regeneration
Technologies
Arbeitsbereiche
verschiedener
Regenerationstechnologien
Passive
Regeneration
Ruß
ohne Regenerationshilfe
Without DOC and NO2
Î O2-Reg.
Additive-System
Additiv-Systeme
Without DOC
Î NO2-+ O2-Reg.
Catalytic
coated SMF®
Katalytisch
beschichteter
Filter
With DOC Î NO2-Reg.
CRT®-System
CRTThermoelektrische
Regeneration
SMF® -AR
System
Nacheinspritzung
(OE-Systeme)
Post-Injection (OE-Systems)
0
100
200
300
400
500
600
Exhaust gas temperature
(oC)
Abgastemperatur
[°C]
Additional value
CSMF® CSF Application
area
Zusatznutzen
Arbeitsbereich
700
Catalytic Coated SMF® Filter
Benefits:
• Coating was a special development for HJS‘s sintered metal filters
• Coating based on new nano-technologies
• Coating is done with complete filter after welding with a dip-coating
• No increasing of pressure drop after coating – coating is <1 µm thin
• Pressure drop improvement in CCRT® application due to soot free pores
• Further improvement of corrosion behavior after coating
• 20 g/cft Pt for optimum CCRT® functionality
• Thermal durability equal to other coatings
• Short delivery time, due to in-house coating
Catalytic Coated SMF® - Sintered Metal
Nearly no
blocking
of pores
after nanocoating
SEM-Picture, Surface – flow inside
Materials for Filtration – Benchmark:
- Ceramic Î Cordierite
- Sintered Metal Filter SMF®
SMF® – ash storage capacity is three to four times higher than
ceramic wall flow
SMF® Filter
Ceramic Filter
Î Cordierite
Ceramic filter with ash loading
SMF®-Filter: Lower Risk of Blockage
Higher ash storage capacity Î low-maintenance Î Cost savings
Application Advantages and Range of Applications
Ash Distribution Model:
Ash
parallel
(soot)
bottom
to top
parallel
(soot)
Ash
bottom
to top
Access for Ash Storage and Cleaning
SMF®
100 cpsi
6 mm
2 mm
Water
Cleaning from ash side
and from clean side
Ash
Ash
Filter
Filter
Cleaning from clean side – losing
pressure due to filter media
Diesel Pollutants and Exhaust Gas Aftertreatment Technologies
Diesel
Emissions
Exhaust
Technology
Particulate Matter
(PM)
Hydrocarbon /
Carbon Monoxide
Nitrogen Oxides
(NOx)
(HC / CO)
Diesel Particulate
Filter
Diesel-OxidationCatalyst
(DPF)
(DOC)
Selective Catalytic
Reduction
Reduction of HC + CO
(SCR)
Diesel Exhaust Gas Aftertreatment Technologies – Overview
Diesel
Emissions
Particulate Matter
(PM)
Diesel Particulate Filter
Exhaust
Technology
Nitrogen Oxides
(NOx)
Hydrocarbon (HC)
Carbon Monoxide (CO)
Diesel-Oxidation-Catalyst Selective Catalytic Reduction
(DOC)
c
(SCR)
e
d
CRT
CRT System
SCR
Stufe 2
Stage 1
c > 99 % Reduction of PM
d > 95 % Reduction of HC + CO
e up to 90% Reduction of NOx
d
c
SCR
SCR -System
System
CRT + SCR = SCRT®
c d
Stage 1
e
Stage 2
Stage
Stage 22
Diesel-Oxidation-Catalyst (DOC)
Î Construction
Cordierit substrate
Wash coat
Catalytic active
precious metal
(Platinum Pt)
Cordierite substrate:
- Porous material with a huge surface
Wash coat:
- For increasing the surface 1 Gramm = 100 m2
- Carrier of precious metal
Diesel-Oxidation-Catalyst (DOC)
Transformation of:
ƒ Cabon monoxide (CO) in carbon dioxide (CO2)
ƒ Hydrocarbon (HC) in water (H2O)
Additional functions:
ƒ Transformation of nitrogen monoxide (NO) in
Nitrogen dioxide (NO2)
ƒ Nitrogen dioxide (NO2) is needed for the
continuously soot oxidation Î CRT Principle
2 CO + O2
Æ
2 CO2
2 NO + O2
Æ
2 NO2
4 HC + 5 O2
Æ
4 CO2 + 2 H2O
Diesel Emissions and Their
Hazardous Pollutants Carbon Dioxide
• colourless
• odourless
• greenhouse gas
Î The Results of
the DOC
Environmental
Hazard
Nitrogen oxides
Water
Very Toxic
CO2
• colourless
• odourless
• harmless
H2O
NOx
DIESEL
Carbon Monoxide
•
•
•
•
X
colourless
Toxic
odourless
greenhouse gas
danger of suffocation
Hydrocarbon
HC
CO
• colourless Î brown
• acrid-smelling
• greenhouse gas, acid rain
PM
•
•
•
•
Particulate Matter (PM)
•
•
•
•
gray or black cloud
burnt-smelling
greenhouse effect
carcinogen Î ?
X
colourless
fuel-smelling
greenhouse gas
carcinogen
Very Toxic
Toxic
STRATUS
DIESEL PARTICULATE FILTERS
Exhaust Gas Aftertreatment Technologies
Part 3
Diesel emissions and their hazardous pollutants
CRT System
Î Continuously Regeneration Technology
Reduction of:
- Carbon monoxide
- Hydrocarbon
- Particulate matter
Î Passive Regeneration
Diesel Pollutants and Exhaust Technologies
Diesel
Emissions
Exhaust
Technology
Particulate Matter
(PM)
Hydrocarbon /
Carbon Monoxide
Nitrogen Oxides
(NOx)
(HC / CO)
Diesel Particulate
Filter
Diesel-OxidationCatalyst
(DPF)
(DOC)
Selective Catalytic
Reduction
Reduction of Soot Particles + HC + CO
(SCR)
Diesel Exhaust Technologies – Overview
Diesel
Emissions
Exhaust
Technology
Diesel-OxidationCatalyst (DOC)
c
Diesel Particulate Filter Selective Catalytic Reduction
(SCR)
Stage 1
c > 95 % Reduction of HC and CO
d > 99 % Reduction of PM
e up to 90% Reduction of NOx
e
d
c
CRT System
Nitrogen Oxides
(NOx)
Particulate Matter
(PM)
Hydrocarbon (HC)
Carbon Monoxide (CO)
d
SCR System
CRT + SCR = SCRT®
Stage 1Stufe 1
d c
e
Stage 2
Stage 2
Design and Operating Principle
CRT® Continuously Regenerating Technology
CRT® System
SMF® particulate filter
Oxidation cat
Inlet
Outlet
PM reduction
Oxidation
•
•
of carbon monoxide (CO) and
uncombusted hydrocarbons (HC)
to form water (H2O)
and carbon dioxide (CO2)
of nitrogen monoxide (NO)
to form nitrogen dioxide (NO2)
•
•
Particulate matter (PM) is
trapped by the filter material
Nitrogen dioxide (NO2) generated in the
oxi-cat continuously oxidizes the
accumulated PM = CRT® Principle
The Modular CRT System Î (Continuously Regeneration Technology)
Particulate Filter
Output Module
Silencer
Oxidation-Catalyst
Input Module
SMF® CRT System (Continuously Regeneration Technology)
Filter System for
Oxi-Cat
HDV & Bus Applications
Input Module
1
2
CRT System
11.
22.
> 95% Reduction of HC + CO
> 99% Reduction of PM (In number)
Passive Regeneration
ÎContinuously Regeneration > 260 㼻 C
Output Module
SMF® Particulate Filter
CRT Description of Function (Continuously Regeneration Technology)
Diesel Oxidation Catalyst
SMF® Sintered Metal Filter
Engine exhaust gas
Cleaned exhaust gas
4HC + 5O2
Î
4CO2+2H2O
2CO + O2
Î
2CO2
2NO + O2
Î
2NO2
2NO2 + C
Î
2NO + CO2
Diesel Emissions and Their
Hazardous Pollutants Carbon Dioxide
• colourless
Î The Results of
• odourless
the CRT System
• greenhouse gas
Environmental
Hazard
Nitrogen Oxides
Water
Very Toxic
CO2
• colourless
• odourless
• harmless
H2O
NOx
DIESEL
Carbon Monoxide
•
•
•
•
X
colourless
Toxic
odourless
greenhouse gas
danger of suffocation
Hydrocarbon
HC
CO
• colourless Î brown
• acrid smelling
• greenhouse gas, acid rain
PM
•
•
•
•
Particulate Matter (PM)
•
•
•
•
X
gray or black cloud
burnt-smelling
greenhouse effect
carcinogen Î ?
X
colourless
fuel-smelling
greenhouse gas
carcinogen
Very Toxic
Toxic
Fuel Borne Catalyst (FBC)
Fuel additive assisted regeneration
Î Passive Regeneration
Fuel Borne Catalyst
(fuel additive assisted regeneration)
Fuel-borne catalyst (FBC) – Fuel Additive Assisted Regeneration
How It Works
- A dosing system is used to add an additive to the diesel fuel combusted in the engine.
The combusted additive is deposited on the particulate filter together with the particulate
matter (PM).
- This reduces the ignition temperature of the PM on the filter from normally 600 – 650㼻C
to 380 – 400㼻C and the system is able to regenerate itself periodically or intermittently
by means of the exhaust gas temperature of the engine.
- The sintered metal particulate filter, SMF®, traps approx. 99% of the particulate matter.
- Advantages:
NO2 neutral, suitable for low exhaust gas temperatures
- Disadvantages:
FBC ash deposited in filter in addition to oil ash also has to be
cleaned out
- Applications:
commercial vehicles, buses, construction machinery, mining equipment
SCRT® System
ÎSelective Catalytic Reduction Technology
Reduction of:
- Carbon monoxide
- Hydrocarbon
- Particulate matters
- Nitrogen oxides
Î Passive Regeneration
Diesel Pollutants and Exhaust Technologies
Diesel
Emissions
Exhaust
Technology
Hydrocarbon /
Carbon Monoxide
Nitrogen Oxides
(HC / CO)
(NOx)
Diesel Particulate
Filter
Diesel-OxidationCatalyst
Selective Catalytic
Reduction
(DPF)
(DOC)
(SCR)
Particulate Matter
(PM)
Reduction of NOx
Diesel Exhaust Technologies – Overview
Diesel
Emissions
Hydrocarbon (HC)
Carbon Monoxide (CO)
Nitrogen Oxides
(NOx)
Particulate Matter
(PM)
Diesel-Oxidation-Catalyst Diesel Particulate Filter Selective Catalytic Reduction
Exhaust
Technology
CRT System
(DOC)
c
d
c
Stage 1
c > 95 % Reduction of HC and CO
d > 99 % Reduction of PM
e up to 90% Reduction of NOx
(SCR)
e
d
SCR System
CRT + SCR = SCRT®
Stage 1Stufe 1
d c
e
Stage 2
Stage 2
SCRT® System (= SCR + CRT®)
SMF® Sintered Metal Filter
Oxi-Cat
CRT System
Stage 1
SCRT® System
SCR System
Stage 2
Soot
Urea (AdBlue®) Doser
SCR Catalyst
Ammonia
Slip Catalyst
free
&
Nitrogen Oxides
free
SCR – Selective Catalytic Reduction
SCR System
Urea Dosing
Stage 2
Hydrolysis of Urea
SCR Catalyst
In
Out
AdBlue® Drops
SCR Transformations:
Ammonia Production
4 NO + 4 NH3 + O2
2 NH3 + NO + NO2
6 NO2 + 8 NH3
NOx Reduction
4 N2 + 6 H2O
2 N2 + 3 H2O
7 N2 + 12 H2O
NOX Reduction by ammonia (NH3) under oxidizing conditions
Engineering – SCRT® (Technology for PC and CV Applications)
Engineering – SCRT® (Technology for PC and CV Applications)
Diesel Emissions and Their
Hazardous Pollutants Carbon Dioxide
• colourless
Î The Results of
• odourless
the SCRT® System • greenhouse gas
Environmental
Hazard
Nitrogen Oxides
Water
CO2
• colourless
• odourless
• harmless
H2O
NOx
DIESEL
Carbon Monoxide
•
•
•
•
X
colourless
Toxic
odourless
greenhouse gas
danger of suffocation
Hydrocarbon
HC
CO
X
PM
•
•
•
•
X
gray or black cloud
burnt-smelling
greenhouse effect
carcinogen Î ?
X
colourless
fuel-smelling
greenhouse gas
carcinogen
Particulate Matter (PM)
•
•
•
•
Very Toxic
• colourless Î brown
• acrid-smelling
• greenhouse gas, acid rain
Very Toxic
Toxic
Active Regeneration
The SMF®-AR
SMF®-AR 100% Diesel Particulate Filter
(SMF®– Technology for Light CV and Non-Road Applications, e.g.)
General Description of Function
- The SMF®-AR system is comprised of a sintered metal filter with a fully automatic
regeneration unit (AR).
- This is capable of regenerating the soot accumulated in the filter, in any engine operating
states, without any support from the engine and without intervention by the driver. For
regeneration a upstream catalyst is not necessary.
- The sintered metal filter retains particles produced while the engine is running with an
efficiency factor of almost 100%.
- The sensors mounted on the filter constantly monitor the exhaust temperature and
exhaust back pressure in the filter. This determines the increasing quantity of soot in the
filter as the engine time lengthens.
- When sufficient soot has accumulated in the filter, the control unit automatically triggers a
regeneration.
- In this case, the electrical heater elements are switched on for approximately two minutes.
- In order for all the soot to burn-off in a short time leaving practically no residue, an
additive is added automatically to the diesel fuel by the dosing system which lowers the
ignition temperature of the soot and increases the burn-off speed.
SMF®-AR 100% Sintered Metal Filter – Active Regeneration
Filter System for
LDV + Non-Road
Applications
SMF®-AR
ƒ
Suitable for OE applications and retrofitting
ƒ
> 99% reduction of soot particles incl. fine particles
ƒ
Suitable for urban traffic („Stop-and-go“)
ƒ
Automatic Î active regeneration
ƒ
Modular system
ƒ
Reliable system and low maintenance
Thank You
T.F. Hudgins, Incorporated
Phone
Fax
713-682-3651
713-682-1109
Email: cbeery@tfhudgins.com
Internet: www.spinnerii.com
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