Petrol-electric hybrid vehicles use a hybrid technology of fuel (gasoline) and electric energy. With an electric motor acting as an auxiliary power to the engine, such vehicles are more energy efficient.
Its working principle is based on the complementarity of engine and generator. When the engine is in the best working condition, the engine drives the car; When the engine is not in optimal working condition, the generator begins to assist in working to keep the engine in optimal working condition and obtain the lowest fuel consumption.
Compared with pure fuel vehicles, gasoline-electric hybrid vehicles can better adapt to different driving conditions, because the engine speed will change with the change of gear and speed, and gasoline-electric hybrid vehicles can maintain the best working condition in these changes.
After optimum working condition is reached, the car is automatically converted to an engine-driven vehicle. The rest of the time, it's driven by a generator. This collaborative approach reduces fuel consumption and improves overall driving efficiency.
According to the different structure, petrol-electric hybrid vehicles can be divided into series hybrid, parallel hybrid and hybrid hybrid three categories. These different types differ slightly in design and use, but the common denominator is that they all improve energy efficiency.
It should be noted that petrol-electric hybrid vehicles are not new energy vehicles, but are considered energy-saving vehicles. Therefore, they still have blue logos to distinguish them from new energy vehicles.