Comparison of a chain driven vs. gear driven valve train in a commercial vehicle

Autoren

Peter Bachmair, iwis motorsysteme GmbH & Co. KG;
Christoph Biwer, Thomas Saupe, FEV Europe GmbH;
Dr. Thomas Fink, Joh. Winklhofer Beteiligungs GmbH & Co. KG

Jahr

2019

Zusammenfassung

Motivation and target for the concept study
The aim of this study is to show the feasibility of using chain technology in timing drives for heavy duty engines in terms of dynamics, NVH and durability and to point out the advantages of using a chain drive instead of a gear drive. For this purpose a theoretical and hardware study was initiated by iwis motorsysteme and carried out by FEV Europe GmbH.

TRITAN: Innovative Coating for Timing Chain Pins
The TRITAN technology was developed to achieve the highest wear resistance for ti-ming chains, suitable for maintenance free systems even for the very demanding boundary conditions of heavy duty engines. TRITAN is an in-line Physical Vapor Deposition (PVD) process that generates layers which withstand aggressive oil-sootfuel mixtures. At least 50% chain wear reduction is achieved in comparison to established coatings of timing chain pins.

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