L&L Thermal
Made for Heat

Optimized thermal insulation with tailor-made products

Most countries around the world are continuously tightening their emissions and fuel efficiency legislation. This is driven by a need to reduce pollution in urban areas or generally intended to reduce the use of fossil fuel resources, thereby limiting the effect of transportation on global warming.

For an internal combustion engine-powered vehicle to be able to reduce emissions and fuel consumption, there is a need to run the engine at significantly higher temperatures. The higher temperatures allow the selective catalytic reduction (or SCR) unit to more effectively convert nitrogen oxides into nitrogen, water, and carbon dioxide. Additionally, higher inlet temperatures for particulate filters allow these to burn off soot more efficiently.

L&L’s thermal technologies offer thermal management solutions in five ways:

  • Ensuring the exhaust gas temperature from the engine remains high during the flow to the SCR
  • Shielding and protecting devices in the engine bay from the heat emitted by the engine and exhaust systems
  • Enabling higher comfort for the driver and passenger by preventing heat from the engine moving into the passenger cell
  • Providing heat shielding of the battery and enabling low energy usage of the active thermal management of the battery, thus enlarging the range of the battery-powered vehicle
  • Reducing noise produced by transportation vehicles, preferably at its source (i.e. in the engine bay compartment)

Heat shield

L&L’s heat shield is a non-stretchable, high-temperature resistant insulation solution for exhaust thermal management applications. Our technology comprises of three to eight layers depending on the application and functional requirements (from 350°C to as high as 900°C), L&L’s heat shield demonstrates excellent heat-strength resistance, improved heat / temperature retention, and is non-burning.

These solutions are available in both rigid (metallic solution) and flexible casings and can be wrapped around any exhaust shape.

L&L’s heat shield allows OEMs to achieve Euro IV or VI compliance (depending on region) and are non-toxic with excellent chemical resistance against grease, water, and mud.

Heat shield

Heat shield for tankers designed to transport flammable substances

We offer our heat shield technologies for POL (petrochemical vehicles), which supports our customers in meeting the increased emission norms and safety regulations for POL applications. In addition to our standard series, our high-temperature resistant insulation solution covers emission management systems like the EGP/EATS (DOC + DPF + SCR) system to reduce heat emitted by this system to a surface temperature below 180°C.

POL products are non-stretchable and comprises of three to five layers, based on customers’ functional requirements: emission management systems can have surface temperatures ranging from 250°C to as high as 550°C. They are available in both flexible casings (which can be wrapped around EGP/EATS), and rigid casings "metallic solution" (which are installed at a distance to EGP/EATS for sufficient air circulation).

L&L Thermal heat shields offer excellent heat-strength resistance and are non-burning as well as non-toxic with superior chemical resistance against grease, water, and mud.

Heat shield for tankers
Heat shield for tankers

Under-hood and under-floor thermal insulation

As EURO-VI engines generally run at higher temperatures compared to e.g. EURO-IV engines, L&L Products engineers a custom insulation solution that works well for under-hood and under-floor applications, by maintaining more of a steady temperature within ambient +2°C in the driver’s cabin for best possible driver and passenger comfort.

Our solutions are non-stretchable and comprises of four to six layers, based on customers’ application and functional requirements, temperatures from the engine bay / EATS system ranges from 150°C to as high as 400°C when entering the cab. Parts are available as flat-cut and/or as 3D thermoformed to enable any shape. They can be installed using the customer’s current installation process, i.e. with pressure adhesives and mechanical studs.

Like all L&L Thermal products, L&L’s under-hood and under-floor thermal insulation solutions offer optimal heat-strength resistance, are non-burning as well as non-toxic, and demonstrate excellent chemical resistance against grease, water, and mud.

Under-hood and under-floor thermal insulation
Under-hood and under-floor TI
Under-hood and under-floor thermal insulation
Under-hood and under-floor TI

Battery thermal insulation

Both battery efficiency and life of the battery system can be enhanced with our passive battery insulation, while also maintaining a stable temperature. Outside influences like adverse exterior temperatures mean that active thermal management systems must consume a lot of energy to ensure optimal battery temperatures. Our battery thermal insulation solution, e.g. installed on city buses, protect the battery from such a harsh environment and improve the range of the battery-powered vehicle.

Our products are non-stretchable, available as flat-cut and 3D thermoformed parts and comprise three to six layers, based on customers’ application and flammability requirements (UL94 V0/Non-Combustible). Battery thermal insulation solutions can be set up using current installation processes, i.e. with pressure adhesives and mechanical studs. They offer excellent specifications, such as heat-strength resistance, are non-burning and non-toxic, and demonstrate superior chemical resistance against grease, water, and mud.

Battery thermal insulation
Battery thermal insulation

Engine bay heat and noise shields

The regulations for noise emissions from the engine towards its surroundings are becoming tighter each year. The target is to reduce noise emitted by transportation, as noise pollution is becoming an increasing concern, especially in towns and cities. Reducing engine bay noise at the source also means a cost reduction for cities, as they no longer need to install noise management walls.

Coping with both heat and noise is a specialty of L&L Products. Our products are non-stretchable, available as flat-cut and 3D thermoformed parts and comprise three to six layers, based on customers’ application needs in terms of noise reduction, heat and flammability requirements (e.g. UL94 V0/Non-Combustible). Parts can be assembled using current installation processes used at customers: clips can be pre-installed, but also pressure adhesives and mechanical studs can be used. Outside of the target performance, parts offer excellent resistance against chemicals, cleaning agents, grease, water, stone chip, and mud and can be cleaned by a power wash.

Engine bay heat and noise shields

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