Engine Expo 2018

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5., 6.,7. Juni 2018
Halle 9, Messe Stuttgart, Deutschland


Heat and pressure resistant ta-C coatings developed for high durability piston pins
HEF Group

HEF Group will showcase its latest developments in surface coatings to ensure higher durability of piston pins in new efficient engines.

The new environmental standards and the latest investigations for better engine efficiency lead to new concepts and designs for moving parts in internal combustion engines. This entails higher thermal and mechanical constraints on different engine components and especially on piston pins, where behavior and lifetime prediction is a great challenge. In fact higher engine efficiencies are possible thanks to higher cylinder pressures during the combustion.

To keep at least the same durability, new concepts of pistons with new materials and new geometries have been designed, tested and validated or are today under development. Most of the time those concepts lead to higher temperatures and mechanical pressures on piston pins.

For those reasons HEF Group, world leader in surface engineering, decided to enlarge its knowledge and skills on that engine component. Different aspects, from coating process technologies to testing tool panels have been investigated and validated. By the way new coatings based on higher temperature resistance such as ta-C coatings have been developed.

The new surface properties offered by the solutions from HEF Group enlarge the range of usage and secure the durability of piston pins. In addition, new in-house testing tools such as piston pins test rigs are today available for more representative and reliable investigations at lower costs.

Engine Expo 2017 stand number: 3616

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Zukünftige Messe: Engine Expo 2019, 21-23 Mai 2019, Halls 7, 8, 9, 10, Stuttgart Messe, Deutschland