Torque reduction amount determination method and device, vehicle and storage medium

Abstract

The embodiment of the invention discloses a torque reduction amount determination method and device, a vehicle and a storage medium. The method comprises the steps of: detgermining the torque reduction coefficient corresponding to the current upshift process of the vehicle and the target rotating speed of an engine; determining a target torque reduction amount of the engine in the current upshift process according to the rotational inertia, the torque reduction coefficient and the target rotation speed of the engine; and sending the target torque reduction amount to an engine controller, so that the engine controller adjusts the rotating speed of the engine in the current upshift process according to the target torque reduction amount, and the difference value between the adjusted rotating speed of the engine and the target rotating speed meets the preset condition. According to the scheme, the target torque reduction amount of the engine in the current upshift process can be determined according to the torque reduction coefficient of the vehicle in the current upshift process, the target rotating speed of the engine and the rotational inertia of the engine, automatic determination of the torque reduction amount is achieved, a large number of real vehicle tests and calibration are not needed, and a large number of manpower and material resources are saved; and the determination efficiency and accuracy of the torque reduction amount are improved.

Description

technical field

[0001] Embodiments of the present invention relate to the technical field of vehicle control, and in particular, to a method and device for determining torque reduction, a vehicle and a storage medium. Background technique

[0002] Shift quality is the core of automatic transmission control and is directly related to the comfort of the vehicle. With the upgrading of consumption, users have higher and higher requirements for shift quality. The shift quality of a power upshift is related to the amount of torque down on the engine.

[0003] The traditional method is to pre-set calibration parameters in multiple dimensions, including speed regulation time, engine speed, engine torque, separation clutch speed and combined clutch speed, etc., and then determine a reasonable amount of torque reduction through a large number of actual vehicle tests and calibrations , not only consumes a lot of manpower and material resources, but also has low efficiency and poor acc...

Images