Jedyne co znalazlam to dysza rury piaskujacej w ukladzie hamowania, czy to o to chodzi?
pozdrawiam

4 podgrzewane dysze na wózek na zewnątrz każdego koła. - https://isn.page.link/gHFp

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Note added at 1 hr (2019-05-08 22:50:10 GMT)
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Piasecznica to urządzenie w pojeździe szynowym (lokomotywa, tramwaj), którego zadaniem jest podawanie piasku pod koła napędowe, zapobiegając ich poślizgowi, zwłaszcza podczas ruszania i przy hamowaniu. - https://pl.wikipedia.org/wiki/Piasecznica_(technika)#

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A sandbox is a container on most locomotives, multiple units and trams that holds sand, which is dropped on the rail in front of the driving wheels in wet and slippery conditions and on steep grades to improve traction. - https://en.wikipedia.org/wiki/Sandbox_(locomotive)

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Locomotives used multiple sandboxes, so that their delivery pipes could be short and nearly vertical. Engine sheds in the UK were equipped with sand drying stoves, so that sandboxes could be refilled each morning with dry sand. Steam locomotives in the US had a single sandbox, called a sand dome atop the boiler where the rising heat helped to dry the sand. Even with this arrangement, sand pipes tended to clog, and by the 1880s, pneumatic sanding systems were being proposed

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19 Sand pipe — Deposits sand directly in front of the driving wheels to aid traction. - https://en.wikipedia.org/wiki/Steam_locomotive_components