Diesel-electric refers to a type of propulsion system that combines a diesel engine with an electric generator. In this setup, the diesel engine generates electricity, which then powers electric motors that drive the vehicle or machinery. This system is commonly used in large vehicles like trains and ships, where efficiency and power are essential. One of the main advantages of diesel-electric systems is their ability to provide high torque at low speeds, making them ideal for heavy-duty applications. Additionally, they can be more fuel-efficient and produce lower emissions compared to traditional diesel-only systems, contributing to a cleaner environment.