A map information extraction method applied to predictive cruise of heavy commercial vehicle

By storing main road map information in heavy commercial vehicles and combining it with GPS and time threshold control to dynamically update map information, the problems of wasting high-precision map resources and high vehicle costs are solved, and fuel economy is improved, especially with significant fuel savings in mountainous conditions.

CN122306037APending Publication Date: 2026-06-30SHAANXI HEAVY DUTY AUTOMOBILE CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI HEAVY DUTY AUTOMOBILE CO LTD
Filing Date
2024-12-27
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The current use of high-precision map information for heavy commercial vehicles results in high vehicle costs and waste of resources, low map information utilization, and poor fuel economy, especially in mountainous conditions.

Method used

By storing main road map information in the vehicle by default, three main road maps are selected using data clustering. Combined with GPS information and time thresholds, the vehicle is dynamically controlled to enter predictive cruise and predictive control states. Remote upgrade technology is used to update map information, reducing unnecessary demand for high-precision map resources.

Benefits of technology

It improves the utilization rate of map information, reduces the overall vehicle cost, and enhances fuel economy, especially in mountainous conditions. It dynamically plans vehicle speed and gear to maintain efficient engine operation and reduce fuel consumption.

✦ Generated by Eureka AI based on patent content.

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Abstract

This invention relates to the field of commercial vehicle control technology, specifically to a map information extraction method for predictive cruise control in heavy-duty commercial vehicles. The method selects main road map information and chooses three trunk roads from the vehicle's latitude and longitude data. Map information updates are allowed when the interval between two map information updates is greater than or equal to one month; otherwise, the update is maintained. The vehicle enters cruise control mode when it meets the following conditions: vehicle speed ≥ 40 km / h, no braking signal, and transmission in forward gear. Predictive control mode is entered when the vehicle's GPS information effectively matches the pre-stored map information for a period greater than or equal to a time threshold T1. Predictive control is performed on roads matching the map information by updating the pre-stored map information in the vehicle controller. This includes predictive cruise control, predictive gear shifting, and predictive thermal management functions, enabling effective switching between constant speed cruise and predictive cruise control functions, improving fuel economy during vehicle cruise operation, especially in mountainous highway conditions.
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