An optimal tire pressure prompting method for pure electric vehicles

Abstract

The invention provides an optimal tire pressure prompting method for a pure electric vehicle, comprising the following steps: 1) collecting signals: the vehicle controller collects the steering angle signal and the wheel speed of each wheel; 2) data filtering: the vehicle controller collects the The collected steering angle signal judges whether the current driving condition of the vehicle is suitable for manual intervention, and stores the wheel speed in the manual intervention condition, and goes to step 3) Roll radius comparison: the vehicle controller is based on the stored wheel speed Through the setting algorithm, it is determined whether the tire pressure of each wheel is within the preset tire pressure range, and the tire pressure range is determined according to the rolling resistance; 4) Manual intervention prompt: when the tire pressure is within the set tire pressure When the pressure is outside the pressure range, the warning unit will prompt the driver to adjust the tire pressure through manual intervention. The optimal tire pressure prompting method of the present invention avoids the tire pressure change caused by the working conditions and the environment. economic reduction and safety hazards.

Description

technical field [0001] The invention relates to energy-saving technologies for new energy vehicles, in particular to a method for prompting optimal tire pressure of pure electric vehicles. Background technique [0002] New energy vehicles represented by pure electric vehicles are undoubtedly one of the important directions for the future development of the automobile industry because of their obvious advantages of environmental protection and energy saving. And with the inclination of relevant national policies, many automakers have launched or focused on research and development of pure electric vehicles. However, currently limited by the bottleneck of battery technology that is difficult to break through, and the construction of basic supporting equipment such as charging facilities has yet to be further improved, so for the development of pure electric vehicles at the current stage, the driving range is one of the key points affecting its promotion. How to optimize the e...

AI Technical Summary

Problems solved by technology

[0003] When the vehicle is running between regions with temperature differences such as winter and summer, weather changes or regional differences, the air pressure in the tire will be different, and the different tire pressure will directly affect the rolling resistance of the tire. When it reaches a certain To a certain extent, it will even obviously affect the working economy of the whole vehicle

However, the current tire pressure monitoring device will only give a warning or reminder signal when there is a large difference in the tire pressure of a certain tire, and this method can only avoid some relatively large accidents caused by the tire pressure. There will be no corresponding feedback when the overall tire pressure rises or falls slightly due to temperature changes

[0004] In addition, at present, for pure electric vehicles with tire pressure monitoring devices, additional hardware such as sensors, transmitters and receivers, chips, etc. are often introduced, which not only increases the cost of the vehicle, but also has the problem of difficulty in installation; in addition, wireless The transceiver device is prone to failure, and the system needs to be equipped with an additional power supply, and it is inconvenient to replace the power supply

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