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GOVERNMENT REQUIREMENTS
Legislators are setting clear targets for the reduction
of pollutant gases and particulate matter from diesel
engine exhaust emissions. Despite significant
advances in engine design, developments in catalytic
converter and particulate filter systems appear to
provide the most promising solution in meeting the
tighter requirements.
Currently, most of the available systems are
temperature dependant and research shows that
heat loss from wide bore exhaust pipes can reduce
the efficiency of the equipment used in exhaust gas
conversion and particulate removal.
Insulation is already used around converters and
filter traps to enhance performance though the
exhaust pipe from the engine manifold to the catalyst
can is largely ignored. The new regulations also apply
to existing vehicles and will necessitate a
programme of retrofits, where the diversity of
vehicle operating conditions will have to be taken into
account, often when the vehicle is situated on
another continent.
Legislators are setting clear targets for the reduction
of pollutant gases and particulate matter from diesel
engine exhaust emissions. Despite significant
advances in engine design, developments in catalytic
converter and particulate filter systems appear to
provide the most promising solution in meeting the
tighter requirements.
Currently, most of the available systems are
temperature dependant and research shows that
heat loss from wide bore exhaust pipes can reduce
the efficiency of the equipment used in exhaust gas
conversion and particulate removal.
Insulation is already used around converters and
filter traps to enhance performance though the
exhaust pipe from the engine manifold to the catalyst
can is largely ignored. The new regulations also apply
to existing vehicles and will necessitate a
programme of retrofits, where the diversity of
vehicle operating conditions will have to be taken into
account, often when the vehicle is situated on
another continent.
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Retrofits will require an easy to fit, insulation kit.
Variable engine load and frequent stops and starts,
typically found on city buses, adversely effect the gas
temperature cycles hence the catalyst equipment can
become inefficient.
In retrofit applications exhaust pipe configurations
vary from vehicle to vehicle and it is unlikely that
drawings will always be available, therefore on these
occasions, bespoke insulation jacketing will not be an
option. The wrap system comprises of two main
components, an insulating layer tape and an outer
protective layer tape.
The inner layer consists of high temperature
insulation material bonded to a reflective film, in a
unique format that allows the tape to stretch, thereby
accommodating bends and avoiding slippage when
wrapped.
The outer layer consists of a self bonding, high
temperature resistant elastomer that provides extra
protection to the insulation layers. Flame Retardant to
UL 94 V-0 . Insulation wrap is applied in layers
according to the temperatures involved in the
application, normally 3 layers. For higher
temperatures it is recommended that at least one
plain insulation layer is applied against the hot face
with the reflective layers applied later
Variable engine load and frequent stops and starts,
typically found on city buses, adversely effect the gas
temperature cycles hence the catalyst equipment can
become inefficient.
In retrofit applications exhaust pipe configurations
vary from vehicle to vehicle and it is unlikely that
drawings will always be available, therefore on these
occasions, bespoke insulation jacketing will not be an
option. The wrap system comprises of two main
components, an insulating layer tape and an outer
protective layer tape.
The inner layer consists of high temperature
insulation material bonded to a reflective film, in a
unique format that allows the tape to stretch, thereby
accommodating bends and avoiding slippage when
wrapped.
The outer layer consists of a self bonding, high
temperature resistant elastomer that provides extra
protection to the insulation layers. Flame Retardant to
UL 94 V-0 . Insulation wrap is applied in layers
according to the temperatures involved in the
application, normally 3 layers. For higher
temperatures it is recommended that at least one
plain insulation layer is applied against the hot face
with the reflective layers applied later
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Neptech manufactures quality heated / insulating blankets, jackets and a full line of electrically heated products for a wide variety of industrial applications.
Key features include: Flexible insulation covers, Integral Heating elements, Efficient Heat Transfer.
Key features include: Flexible insulation covers, Integral Heating elements, Efficient Heat Transfer.
