What are the models of dual-fuel electric vehicles?

[VonBrianna]

Currently, they are mainly used in buses or some city buses, known as gas-electric vehicles. Dual-fuel electric vehicles are a new type of eco-friendly cars that use natural gas as the engine's energy source, combined with an electric motor to jointly drive the vehicle. It serves as an alternative energy source to gasoline and is now widely used worldwide. According to relevant test data, compared to equivalent conventional buses, new energy gas-electric hybrid buses can reduce pollutant emissions by over 60%, save about 15%-20% in energy consumption per 100 kilometers, reduce fuel consumption by more than 30%, and lower total carbon emissions by over 30%. However, the mainstream development currently is not focused on gas-electric hybrid vehicles but primarily on oil-electric hybrids and pure electric vehicles. After combustion, natural gas in electric vehicles turns into water vapor, causing less air pollution, but with lower power output. The calorific value of natural gas-air mixture is lower than that of gasoline (natural gas/air mixture has a calorific value of 3.36MJ/m3, while gasoline/air mixture has 3.82MJ/m3). With less intake (air) volume and a smaller molecular change coefficient, the power performance is reduced by about 20%.