Vehicle braking parking and starting control method and device, vehicle and readable storage medium

Abstract

A control method and device for braking, stopping and starting of a vehicle, the vehicle and a readable storage medium are characterized in that a brake master cylinder pressure threshold value in a servicing state is preset on different ramps, timely correction is carried out in the parking process, a user can enter an idle neutral gear with a braking force as low as possible in different ramp scenes, and the user can stop the vehicle at the idle neutral gear at the braking force as low as possible. The condition that the vehicle cannot enter the idle neutral position after braking and parking under the working conditions of flat roads, small ramps and the like is avoided; by actively adjusting the pressure of the brake master cylinder after entering the idle neutral position, the purposes of improving the driving comfort, improving the acceleration response and enhancing the use experience of a user are achieved.

Description

technical field [0001] The invention relates to the field of automobiles, in particular to a control technology for braking, parking and parking and starting of a vehicle. Background technique [0002] At present, almost all cars have a neutral function. After some automatic transmission vehicles are parked in D gear, the vehicle can enter the idling neutral position to save fuel. However, there are some problems in the noise, vibration and user experience of this working condition: ① In the most widely used working conditions - braking and parking on flat roads and slopes, for example, when waiting for traffic lights, the user normally lightly steps on the brake pedal , although the vehicle is completely stationary, the vehicle has not entered the idle neutral gear (because the braking force threshold for entering the idle neutral gear is generally set higher in order to ensure that some slopes can enter the idle speed neutral gear), the vibration and NVH noise are very lou...

AI Technical Summary

Problems solved by technology

However, there are some problems in the noise, vibration and user experience of this working condition: ① In the most widely used working conditions - braking and parking on flat roads and slopes, for example, when waiting for traffic lights, the user normally lightly steps on the brake pedal , although the vehicle is completely stationary, the vehicle has not entered the idle neutral gear (because the braking force threshold for entering the idle neutral gear is generally set higher in order to ensure that some slopes can enter the idle speed neutral gear), the vibration and NVH noise are very loud at this time. Large, some vehicles still have obvious low-frequency ear pressure during this process

②In scenarios such as flat roads, small slopes, and large slopes, it is necessary to step on the brake pedal deeply to enter idling neutral. It is very heavy, causing the brake pedal to be hard to step on, and it is not friendly to female users

③When the brake is applied deeply to stop and enter the idling neutral position to start, and the brake is released to start, the response lag is obvious, and the dynamic driving experience is not good

[0003] However, in the related technologies known so far, there is no effective measure to significantly improve the user experience of the vehicle's idling and neutral position. The user's satisfaction with the idling and neutral position is not high enough, and the utilization rate is not wide enough. The utilization rate in the process is low, and the original intention of saving fuel and enhancing the user experience has not been achieved, and there is a deviation from the user's expectations, so it needs to be improved

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