| Téléchargement | - Voir la version finale : Investigation of freight railcar air brake performance in cold temperatures (PDF, 714 Kio)
- Voir les données supplémentaires : Investigation of freight railcar air brake performance in cold temperatures (PDF, 2.0 Mio)
|
|---|
| Auteur | Rechercher : Jahagirdar, A.1; Rechercher : Toma, E.1Identifiant ORCID : https://orcid.org/0000-0002-3599-0724; Rechercher : Mackie, S.1 |
|---|
| Affiliation | - Conseil national de recherches Canada. Automobile et les transports de surface
|
|---|
| Format | Texte, Article |
|---|
| Conférence | 13th International Heavy Haul Association Conference (IHHA 2025), November 17-21, 2025, Colorado Springs, Colorado, United States |
|---|
| Résumé | This paper presents results from controlled climatic testing of 29 service-worn and 26 new / refurbished freight railcar air brake systems at temperatures from +5°C to -40°C. These systems were subjected to both service and emergency brake applications, at nominal brake pipe pressures of 90 psi and 75 psi. Service-worn systems were also analysed to observe effects of system age and time since refurbishment on brake per-formance. Findings show that service-worn systems held less force at the end of pre-determined hold times than new / refurbished systems, and this loss of force increased with decreasing temperature. Brake performance was also shown to decline with system age, and this was exacerbated by cold temperatures. Several service-worn systems which pass the industry standard automated single car air brake test failed to operate at colder temperatures, with different failure modes observed. Results demonstrate the loss of brake force at low temperatures, which affects freight train stopping distances, and could have implications for rail operation safety as well as for positive train control (PTC) algorithms in low temperature locations. |
|---|
| Date de publication | 2025-11 |
|---|
| Maison d’édition | International Heavy Haul Association |
|---|
| Déclaration de droit d’auteur | - © 2025 His Majesty the King in right of Canada, as represented by the National Research Council of Canada.
|
|---|
| Langue | anglais |
|---|
| Publications évaluées par des pairs | Oui |
|---|
| Exporter la notice | Exporter en format RIS |
|---|
| Signaler une correction | Signaler une correction (s'ouvre dans un nouvel onglet) |
|---|
| Identificateur de l’enregistrement | 18e3b2ab-7c6f-46ab-96a3-bf8998e34c28 |
|---|
| Enregistrement créé | 2026-05-22 |
|---|
| Enregistrement modifié | 2026-05-22 |
|---|
