What kind of engine does a bullet train have?

A bullet train, also called a high-speed train, does not have an engine in the traditional sense. Instead, it uses a distributed traction system, where multiple electric motors are mounted throughout the train. These electric motors receive power from an external source, such as an overhead catenary or a third rail, and propel the train forward by driving the wheels.

Each motor is directly connected to an axle of one or more wheels, allowing for independent control of each axle and improved traction. This distributed traction system provides several advantages, including better acceleration and deceleration, reduced weight, and the elimination of the need for a dedicated locomotive.

Furthermore, regenerative braking systems are often incorporated into bullet trains, allowing the electric motors to act as generators during braking and generate electricity that can be fed back into the power grid, thus achieving energy efficiency and reducing operational costs.

In summary, a bullet train utilizes multiple electric motors distributed along the train's length instead of a single locomotive, providing efficient propulsion, increased traction, and energy-saving features.