What are the types of locomotives?
1 Answers
Locomotives are divided into thermal locomotives and electric locomotives. The following is an introduction to these two types of locomotives: 1. Thermal locomotives: The installed prime mover belongs to a heat engine, such as steam locomotives, diesel locomotives, and gas turbine locomotives. These locomotives carry fuel and water, making them self-powered and capable of independent operation. As long as there are suitable tracks and facilities for refueling and water supply, they can operate. However, the weight and dimensions of the locomotive are constrained by axle load and railway clearance limits, preventing them from being too heavy or large. Consequently, the weight and size of the power unit installed in the locomotive are also constrained. 2. Electric locomotives: This type of locomotive receives power from an external power station, which is transmitted to substations along the railway, and then supplied via overhead contact lines or a third rail installed beside the tracks. The power supply capacity is not limited by rated power, giving it advantages such as high power, strong short-term overload capability, high operating speed, rapid acceleration, strong traction force, and no smoke or exhaust pollution. It is suitable for busy transportation routes or railways with steep gradients and long tunnels, especially for suburban transport in large cities and underground railway transport.
