gasoline-electric bus

A gasoline-electric bus, also known as a hybrid bus, combines an internal-combustion engine that runs on gasoline with an electric motor. This dual-power system is designed to improve fuel efficiency and reduce emissions compared to traditional buses.

In a gasoline-electric bus, the gasoline engine and electric motor work together. The electric motor is often used for lower speeds or gentle acceleration, providing quiet and efficient operation, particularly in city traffic. When more power is needed, such as for climbing hills or accelerating on highways, the gasoline engine engages. An onboard computer manages the power sources to optimize performance and minimize fuel consumption.

A key feature is regenerative braking, where energy typically lost as heat during braking is captured and stored in a battery to power the electric motor. This system allows the bus to travel further on less fuel. While standard hybrids recharge their batteries through regenerative braking and the engine, plug-in hybrid buses have larger batteries that can be charged from an external power source for extended electric-only driving. This technology represents a practical step toward cleaner transportation for buses.123