Method, device, equipment and storage medium for controlling engine shutdown

Abstract

The invention discloses an engine shutdown control method, device, equipment and storage medium. The method includes: when the vehicle is working in a series working mode and a pure electric working mode request is received, reducing the engine torque from the current torque to the first torque, and maintaining the engine through the generator during the engine torque reduction period running at the current rotational speed; when the current torque of the engine is less than the first torque, control the engine to switch to the fuel-cut state; after the engine is in the fuel-cut state, control the generator to output a negative torque to The engine speed is lower than the speed threshold, and through the technical solution of the present invention, it is possible to ensure fast engine shutdown and improve the NVH level of the vehicle during shutdown.

Description

technical field [0001] Embodiments of the present invention relate to vehicle technology, and in particular to an engine stop control method, device, equipment and storage medium. Background technique [0002] With the advent of the world's energy revolution, oil resources are increasingly scarce, and in the face of increasingly stringent fuel consumption regulations, traditional pure internal combustion engine-driven vehicles are becoming more and more expensive and difficult to reduce fuel consumption; hybrid vehicles are due to With the assistance of electric motors, it has great potential in reducing fuel consumption. The P2 configuration represented by European manufacturers, and the dual-motor planetary gear power split configuration represented by Toyota have all been mass-produced and achieved good results. Fuel consumption performance has won the favor of mass consumers; however, the structure of the three-clutch module including the C0 motor in the P2 configuration...

AI Technical Summary

Problems solved by technology

[0002] With the advent of the world's energy revolution, oil resources are increasingly scarce, and in the face of increasingly stringent fuel consumption regulations, traditional pure internal combustion engine-driven vehicles are becoming more and more expensive and difficult to reduce fuel consumption; hybrid vehicles are due to With the assistance of electric motors, it has great potential in reducing fuel consumption. The P2 configuration represented by European manufacturers, and the dual-motor planetary gear power split configuration represented by Toyota have all been mass-produced and achieved good results. Fuel consumption performance has won the favor of mass consumers; however, the structure of the three-clutch module including the C0 motor in the P2 configuration is complex and requires high clutch control; the patent of the dual-motor planetary gear power split configuration is firmly grasped by Toyota, and the three-motor control It is relatively complicated, and there is almost no description of its configuration control method in the existing documents;

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