AGRITECHNICA DRIVETRAIN
THERMAMAX
77
November 10-16, 2019
Thermamax
Hall 16, Stand D29
INCREASING THE EFFICIENCY OF EXHAUST AFTERTREATMENT SYSTEMS IS
FEASIBLE WITH CORRECT HANDLING OF THE HIGH TEMPERATURES INVOLVED
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iVTInternational.com September 2019
Ever stricter exhaust regulations demand
that the manufacturers t even more e cient
catalytic converters and clean-up systems. What can
be done if these are at their limits?
To reduce the discharge of harmful emissions,
agreements on limits are made at an international level.
For commercial vehicles, these are reduced step by step.
In 2019, EU Stage V emission regulations came into force.
To ful l earlier guidelines various processes and
systems were developed with the target to reduce
individual substances: exhaust gas recirculation (EGR),
diesel particle lters (DPF), SRC-catalytic converters or
multi-functional diesel oxidation catalyzers (DOC).
Meanwhile there has been the use of combined,
modular systems which has again increased the
complexity. More and more components in an
unchanging size of engine room or compartment lead
inevitably to higher temperatures in that space, in which
sensitive components can be thermally a ected. In the
face of further tightening of the guidelines there is
increased pressure on innovation, but the possibilities
seem few.
The Solution
Nevertheless, the e ciency of exhaust aftertreatment
systems can be increased. They are strongly dependent
on the correct handling of high temperatures.
In close cooperation with the leading manufacturers
of agricultural machinery and exhaust aftertreatment
components, we take care that optimum temperatures
are maintained at all points in the exhaust line – thereby
ensuring an exhaust aftertreatment operating at
maximum e ciency.
How it works
Tmax-Integral Insulation comprises two components:
outer shells made of stainless steel foil or thin plate
material are lined with an insulating ber material.
The shell edges are rmly xed together using a
folded joint. The latest embossing tools can then form
the material into every imaginable shape and guarantee
the greatest exibility and secure positioning of the
insulating material. Minimum possible material
thickness keeps the additional weight to a minimum.
However, the most important thing is the thermal
characteristic. The Tmax-Integral Insulation ensures
that optimum temperatures are maintained at all
ABOVE: Tmax V-Band Clamp
Insulation can signifi cantly
reduce heat losses
points on the exhaust line with maximum e ciency
for the exhaust aftertreatment system.
The Benefi ts
• Compliance with stricter emission guidelines by
virtue of more e cient exhaust aftertreatment
• Improved light-o characteristic
• Reduced urea-crystallization
• Reduced carbon dioxide (CO2), soot particles
(PM) and nitrogen oxides (NOx)
• Reduced fuel consumption due to improved
e ciency of turbochargers, catalytic converters,
DPFs, and reduced use of additional burners
• Avoid harmful radiated heat by protecting
temperature-sensitive components
• Suitable for all shapes ensuring a close t
on raw components
• Minimum additional weight
Even greater e ciency can be achieved using the
Tmax-V-Band Clamping Insulation.
This can signi cantly reduce heat loss at connection
points within the exhaust line and allows better operation
of the complete system. Many components in the engine
compartment and exhaust line are interconnected to
make up a complete system – generally using metallic
V-Band Clamps of some description.
The Conclusion
Even an otherwise perfectly insulated system can
have gaps at these interfaces, allowing unwanted and
uncontrolled heat loss into the engine compartment.
Apart from the temperature loss, there is also a risk that
heat-sensitive components in the surrounding space
may be damaged by the radiated heat.
Tmax-V-Band Clamp Insulation solves these
problems in a safe and highly e cient manner. It
consists of an outer shell in stainless steel, insulated
internally with a shaped insulating liner.
Depending on customer requirements, two di erent
types of xing systems are available for the installation
of the insulation to the V-Band Clamp.
Exhaust gas aftertreatment is improved using
Tmax-V-Band Clamp Insulation due to the reduced
heat loss providing better operating parameters
for the exhaust system. iVT
By Ida Mariotti, marketing manager at Thermamax
Handling the heat
/pivt
/iVTInternational.com
