Method and device for determining braking negative torque in vehicle cruise, vehicle and storage medium

Abstract

The invention discloses a method and device for determining braking negative torque in vehicle cruise, a vehicle and a storage medium. The method comprises the steps that when a cruise switch is turned on, the cruise target vehicle speed is determined, and according to the current driving mode and the mapping relation between the driving mode and the negative torque target vehicle speed deviation, the negative torque target vehicle speed is determined; the negative torque target vehicle speed deviation corresponding to the current driving mode is determined according to the cruise target vehicle speed, the initial negative torque control target vehicle speed corresponding to the current driving mode is determined according to the cruise target vehicle speed and the negative torque target vehicle speed deviation corresponding to the current driving mode, and in the cruise working condition, under the condition that the accelerator operation condition is not changed, first operation is executed, the target vehicle speed can be controlled by determining the matched initial negative torque according to the current driving mode, so that the subsequently determined first braking negative torque is the braking negative torque which meets the driver requirement and is matched with the current driving mode of the vehicle, the accuracy of the braking negative torque is improved, and therefore the driving speed of the vehicle is improved. And the comfort and the economical efficiency in the driving process are improved.

Description

technical field [0001] Embodiments of the present invention relate to the technical field of automotive electronic vehicle control, and in particular to a method, device, vehicle and storage medium for determining negative braking torque during vehicle cruise. Background technique [0002] At present, the cruise control of commercial vehicles (hereinafter referred to as cruise) is relatively mature and has been put into the market on a large scale. In cruise control, there are two control methods: positive torque control and negative torque braking. Positive torque control refers to the control of engine fuel injection. Negative torque braking refers to the output of braking negative torque to the controller of auxiliary braking devices such as engines and retarders, so that these auxiliary braking devices can generate braking torque for the vehicle according to the braking negative torque. In a vehicle with positive torque control and negative torque braking, there are tw...

AI Technical Summary

Problems solved by technology

[0005] The present invention provides a method, device, vehicle and storage medium for determining the braking negative torque during vehicle cruising, in order to solve the technical problem of poor driving comfort and economic efficiency caused by the inaccurate braking negative torque determined in the current method

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