Energy management method for hybrid electric vehicle based on HCCI engine

Abstract

The invention provides a hybrid power energy management method based on an HCCI engine, and relates to the field of new energy vehicles. According to the hybrid power energy management method based on the HCCI engine, the HCCI engine is utilized as a power source of a hybrid electric vehicle; considering that ignition timing of the HCCI engine cannot be predicted, opening and closing timing of an inlet and exhaust valve, the engine speed, the temperature of an intake manifold and fuel injecting quantity are taken as input, a neural network is set up to predict the ignition timing of the HCCI engine; the opening and closing time of the inlet and exhaust valve of the engine is controlled by utilizing a variable valve timing technology, so that exhaust gas recompression of the HCCI engine is achieved, and compression ignition of a gas mixture is realized; and then exhaust gas of the HCCI engine is introduced into a Stirling engine, the Stirling engine is utilized for working and charging for a power battery as well, and energy of fuel is comprehensively utilize to achieve energy saving and environmental protection requirements.

Description

Technical field [0001] The invention is in the field of new energy vehicles, particularly a hybrid vehicle. Background technique [0002] With the continuous depletion of oil and the increasing awareness of people's environmental protection, people have put forward more requirements for energy-saving and environmentally-friendly new energy vehicles. Under such circumstances, alternative products to traditional vehicles such as hybrid vehicles and electric vehicles continue to emerge. Before the battery life and charging problems of pure electric vehicles are not completely solved, hybrid vehicles are a good choice. Hybrid vehicles are equipped with both engine and power motor. When the power battery is insufficient, the engine drives the generator to charge the power battery. The power battery provides energy for the power motor to drive the car. When the car needs high power output, the engine can be combined with the power motor. Work together to drive the car together. At p...

AI Technical Summary

Problems solved by technology

[0005] Aiming at the shortcomings of low thermal efficiency and high emissions of hybrid engines in the prior art, the present invention designs an energy management method for hybrid vehicles based on HCCI engines, uses the HCCI engine as the power source of the power battery of the hybrid vehicle, and utilizes the exhaust gas of the HCCI engine Drive the Stirling engine to charge the power battery to realize the energy management of hybrid electric vehicles

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