Freight wagon steering – insights from wayside condition monitoring measurements

The steering performance of freight wagons is directly related to their whole of life operation and maintenance costs. Wagons that steer well experience lower wheel wear, require less horsepower to haul (hence less fuel use and reduced emissions), impart less wear and tear on the rail infrastructure, and produce less noise than wagons that steer poorly. Properly steering wagons are also less prone to wheel climb derailment and hunting at high speeds. This paper presents an evidence based analysis of freight wagon steering performance based on measurements obtained from wayside condition monitoring equipment. This analysis is used to explain the fundamental characteristics of freight bogie steering. Algorithms for determining bogie warp and rotation from wayside measurements are presented, including verification of these methods using direct on-train measurements of steering performance. We then present an analysis of the steering performance of the various freight bogie designs operating on the Sydney metropolitan rail network, along with a diagnosis of the differences in performance that are observed. This analysis provides insights into the causes of wheel squeal, low rail derailments and other problems that are leading to the development of next generation bogies. The results provide a foundation for an objective standard for bogie steering performance. Finally, the differences in wheel wear and fuel use between wagons that steer properly and those that steer poorly are quantified based on modelling of intermodal operations on the east coast main line.

Media Info

  • Pagination: 6p. ; PDF
  • Monograph Title: Maintaining the momentum: CORE 2016: conference on railway excellence, 16-18 May 2016, Melbourne, Victoria, Australia

Subject/Index Terms

Filing Info

  • Accession Number: 01636844
  • Record Type: Publication
  • Source Agency: ARRB
  • Files: ATRI
  • Created Date: May 30 2017 3:28PM