tågväxellåda
A tågväxellåda, often translated as a train gearbox or transmission, is a crucial component in many diesel-electric and diesel-hydraulic locomotives. Its primary function is to transmit power from the diesel engine to the driving wheels, allowing the locomotive to start moving and achieve varying speeds. The need for a tågväxellåda arises because diesel engines operate most efficiently within a relatively narrow range of revolutions per minute (RPM), while a train's operational requirements necessitate a wide range of speeds and tractive forces.
In diesel-electric locomotives, the diesel engine drives a generator, producing electricity. This electricity then powers electric
However, in diesel-hydraulic locomotives, a mechanical or hydraulic tågväxellåda is used. These transmissions employ complex gear