Method, device, and vehicle for idling power generation of a hybrid vehicle

Abstract

The present disclosure relates to an idle power generation method, device and vehicle of a hybrid vehicle. The method includes: when the hybrid vehicle is in the idling power generation state, acquiring the temperature of the power battery of the hybrid vehicle; determining the target torque of the belt drive starter generator BSG of the hybrid vehicle according to the temperature of the power battery; determining the initial torque of the BSG One or more intermediate torques between the torque and the target torque; determine the intake air volume increment of the engine according to the intermediate torque closest to the initial torque; determine the fuel injection volume of the engine according to the determined intake air volume increment; control The engine runs with the determined fuel injection quantity; the air intake quantity increment of the engine is determined according to an intermediate torque closest to the current torque of the BSG until the torque of the BSG reaches the target torque. In this way, when the hybrid vehicle is generating electricity at idle speed, the engine speed fluctuation can be reduced, thereby reducing engine vibration and stabilizing the engine idle speed.

Description

technical field [0001] The present disclosure relates to the field of vehicle control, and in particular, to an idle power generation method, device, and vehicle of a hybrid vehicle. Background technique [0002] Hybrid vehicles are superior to fuel vehicles in many aspects of driving performance. For example, when a hybrid vehicle accelerates and overtakes, it takes significantly less time than a fuel vehicle, and it is easier to accelerate and overtake. However, the manifestation of this performance needs to be based on the electrical balance capability of the vehicle, so it is of great significance to improve the electrical balance capability of the hybrid vehicle. In order to improve the electrical balance capability of the vehicle, it is necessary to improve the driving comfort of the hybrid vehicle. [0003] At present, when a hybrid vehicle based on a belt drive starter generator (Belt Driven Starter Generator, BSG) generates electricity at idle speed, the engine id...

AI Technical Summary

Problems solved by technology

[0003] At present, when a hybrid vehicle based on a belt drive starter generator (Belt Driven Starter Generator, BSG) generates electricity at idle speed, the engine idle speed may be unstable, resulting in severe engine vibration and violent speed fluctuations.

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