The relevant characteristics and working principles of hybrid engines can be summarized as follows:
1. Definition and working principle: A hybrid engine is an engine system that combines two power sources: a fuel engine and an electric motor. Its working principle is to use the complementary effect of the engine and the electric motor to achieve fuel saving. When the engine is in optimal working condition, it will work independently; When the engine is not in optimal working condition, the electric motor will start to assist, which ensures that the engine remains in optimal working condition and reduces fuel consumption.
2. Working mode: Start and low-speed driving: During the start phase or low-speed driving, if the battery is fully charged, the vehicle will prioritize the use of electric motor drive to achieve zero emissions. Acceleration and high-speed driving: When more power is needed, such as uphill or high-speed driving, the fuel engine will automatically start and drive the vehicle, while the electric motor may also assist in providing additional power output. Energy recovery: During deceleration or braking, the vehicle's braking system generates energy recovery, which is used to charge the battery and improve energy utilization efficiency.
3. Electric motor layout and hybrid mode: In the hybrid engine system, the layout of the electric motor determines different hybrid modes, such as P0, P1, P2, P3, P4, etc. These modes are distinguished based on the position of the electric motor in the vehicle power system, and each mode has its unique working principle and advantages and disadvantages. For example, P0 mode places the electric motor in front of the gearbox and drives the BSG motor through a belt, which has the advantages of compact structure and improved fuel efficiency; The P3 mode places the electric motor at the output of the gearbox, sharing the same shaft with the engine, making pure electric drive more direct and efficient.
The hybrid engine achieves the goals of efficient energy utilization, energy conservation, and emission reduction by combining the advantages of fuel engines and electric motors. The design of its working principle and working mode aims to automatically adjust the power output according to the actual driving situation of the vehicle, in order to achieve the best energy utilization efficiency.