Additional emission restrictions require engine manufacturers to comply with Euro 6 and Tier IV regulations to reduce exhaust leakage by 80 percent or more. To achieve these new standards, motors at extreme temperatures, coupled with a high amount of vibrational motion, must have highly engineered sealing solutions. It is not always possible to change applications with predefined mating components, so a sealing solution with a similar coefficient of thermal expansion is required.
What is the problem in existing discharge applications?
Most exhaust gases from heavy diesel engines can reach temperatures of up to 700°C while being subjected to constant vibration. These engine vibrations can cause havoc when a gasket must be maintained on the exhaust line. In fact, they cause rotation, displacement, and abnormal movements that are difficult to seal. Both pressure and thermal movements and cycles require an engineered solution to maintain a seal under extreme application conditions. Using tailored engineering techniques and advanced analytics, Parker is able to create customized solutions for our customers’ most difficult requirements.
Parker’s solution to address these challenges
Parker’s Heavy Duty Engine Air Duct Gaskets.
are one-piece, easy-to-install, metal design with lower leakage rates than traditional labyrinth ring seals. The one-piece metal gasket design is improved with the use of TriCom-HT™, Parker’s patented high-temperature, wear-resistant coating.
Tricom-HT™ offers superior wear resistance by protecting the air duct seal from the damaging effects of engine vibration and thermal cycling, resulting in 80% less leakage and longer seal life.
The design of our gasket fits the mating hardware perfectly, greatly reducing leakage. Grooves are not required in mating hardware, thus lowering the manufacturing cost.
Some key applications where this technology can be used:
- Assembly of multiple components where vibration causes leakage, of gas or other fluids. It is also a problem in high-temperature seal assemblies due to expansion/contraction of mating hardware with higher temperatures.
Gas turbines: where static elastomer or metal seals cause leakage problems at high temperatures - Vibration isolation applications: where isolation seals fail to stop vibration losses.
Discharge connection between
:- EGR
- EGR Cooler
- Exhaust pipes
- Turbocharger
- Exhaust manifold
Key advantages over competitive technology:
Parker was able to incorporate his design experience and knowledge of metal sealing technology with materials technology and science to create this solution. Parker’s air duct seal, was designed with cost savings in mind, and the patented design allows for the installation of a single piece already assembled, virtually eliminating complex sealing requirements. Some key benefits are:
- Easy to install: the seal is designed for pressure installation using a simple hand press. Its curved characteristics allow it to move in cavities while maintaining contact with mating flanges. These special features are also designed to consider offset or misalignment problems.
- Option of single piece already assembled at a low price-metal design: this product, of the rigid sealing solution, provides a value-added function to the supply chain by reducing the number of parts in the Materials Invoice. But not only that, they also decrease installation time and effort, acquisition and assembly costs.
Wear-resistant coating:
Parker’s proprietary coating, TriCom HT
™
, is composed of a single cobalt-nickel alloy matrix co-deposited with chromium carbide and MCrAIY particles to provide a wear- and oxidation-resistant system for long-term use. This coating is vital to ensure that the air duct seal works until the end of the product’s life. For more information, see pages D-64 and D-65 of the CSS 5129.- Lower leakage rates than existing sealing technology: Parker’s air duct seal has been tested both in laboratories and in the field. As can be seen from the graph, it has a better fit than those of its competitors. This is also necessary to meet future emission standards and exceptional anti-leakage requirements that only Parker’s product can give
- High temperature and vibration resistance: the solution can operate up to 760°C continuously and up to a maximum temperature of 843°C. The design also allows it to resist vibration in the engine or machine.
- High long-term corrosion resistance: the air duct seal uses our TriCom™ coating, which helps it resist corrosion, oxidation and wear. It guarantees a lifetime of the application.
For more information about this technology, available sizes, or further questions, please contact our application team at the
Prädifa Technology Division / Business Unit Composite Sealing Systems: praedifa@parker.com and/or at +49 7142 351-0
This article was written with contributions from.
Vivek Sarasam, heavy duty mobile senior applications engineer, Engineered Materials Group.
Related content:
Why it always pays to install coalescing filters in pairs
Metallurgy may or may not determine the success of pipe fittings
A new, faster pipe connection technology for medium-pressure applications
Additional emission restrictions require engine manufacturers to comply with Euro 6 and Tier IV regulations to reduce exhaust leakage by 80 percent or more. To achieve these new standards, motors at extreme temperatures, coupled with a high amount of vibrational motion, must have highly engineered sealing solutions. It is not always possible to change applications with predefined mating components, so a sealing solution with a similar coefficient of thermal expansion is required.
What is the problem in existing discharge applications?
Most exhaust gases from heavy diesel engines can reach temperatures of up to 700°C while being subjected to constant vibration. These engine vibrations can cause havoc when a gasket must be maintained on the exhaust line. In fact, they cause rotation, displacement, and abnormal movements that are difficult to seal. Both pressure and thermal movements and cycles require an engineered solution to maintain a seal under extreme application conditions. Using tailored engineering techniques and advanced analytics, Parker is able to create customized solutions for our customers’ most difficult requirements.
Parker’s solution to address these challenges
Parker’s Heavy Duty Engine Air Duct Gaskets.
are one-piece, easy-to-install, metal design with lower leakage rates than conventional labyrinth ring seals. The one-piece metal gasket design is improved with the use of TriCom-HT™, Parker’s patented high-temperature, wear-resistant coating.
Tricom-HT™ offers superior wear resistance by protecting the air duct seal from the damaging effects of engine vibration and thermal cycling, resulting in 80% less leakage and longer seal life.
The design of our gasket fits the mating hardware perfectly, greatly reducing leakage. Grooves are not required in mating hardware, thus lowering the manufacturing cost.
Some key applications where this technology can be used:
Assembly of multiple components where vibration causes leakage, of gas or other fluids. It is also a problem in high-temperature seal assemblies due to expansion/contraction of mating hardware with higher temperatures.
Gas turbines: where static elastomer or metal seals cause leakage problems at high temperatures
Vibration isolation applications: where isolation seals fail to stop vibration losses.
Discharge connection between:
EGR
EGR Cooler
Exhaust pipes
Turbocharger
Exhaust manifold
Key advantages over competitive technology:
Parker has been able to incorporate his design experience and knowledge of metal sealing technology with materials technology and science to create this solution. Parker’s air duct seal, was designed with cost savings in mind, and the patented design allows for the installation of a single piece already assembled, virtually eliminating complex sealing requirements. Some key benefits are:
Easy to install: the seal is designed for pressure installation using a simple hand press. Its curved characteristics allow it to move in cavities while maintaining contact with mating flanges. These special features are also designed to consider offset or misalignment problems.
Option of single piece already assembled at a low price-metal design: this product, of the rigid seal solution, provides a value-added function to the supply chain by reducing the number of parts in the Materials Invoice. But not only that, they also decrease installation time and effort, acquisition and assembly costs.
Wear-resistant coating: Parker’s proprietary coating, TriCom HT™, is composed of a unique cobalt-nickel alloy matrix co-deposited with chromium carbide and MCrAIY particles to provide a wear- and oxidation-resistant system for prolonged use. This coating is vital to ensure that the air duct seal works until the end of the product’s life. For more information, see pages D-64 and D-65 of CSS 5129.
Lower leakage rates than existing sealing technology-Parker’s air duct seal has been proven both in laboratories and in the field. As can be seen from the graph, it has a better fit than those of its competitors. This is also necessary to meet future emission standards and exceptional anti-leakage requirements that only Parker’s product can give
High temperature and vibration resistance: the solution can operate up to 760°C continuously and up to a maximum temperature of 843°C. The design also allows it to resist vibration in the engine or machine.
High long-term corrosion resistance: the air duct seal uses our TriCom™ coating, which helps it resist corrosion, oxidation and wear. It ensures durability for the life of the application.
For more information about this technology, available sizes, or further questions, please contact our application team at Prädifa Technology Division / Business Unit Composite Sealing Systems: praedifa@parker.com and/or at +49 7142 351-0
This article was contributed by Vivek Sarasam, heavy duty mobile senior applications engineer, Engineered Materials Group.
Related content:
Why it always pays to install coalescing filters in pairs
Metallurgy may or may not determine the success of pipe fittings
A new, faster pipe connection technology for medium-pressure applications
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