Kia‘s patent involves a method for controlling a hybrid electric vehicle’s speed limit by adjusting virtual vehicle speed and accelerator position sensor values. The vehicle operates in different modes based on these values to sustain or deplete the battery charge. Transmission gear position is determined accordingly. GlobalData’s report on Kia gives a 360-degree view of the company including its patenting strategy. Buy the report here.

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According to GlobalData’s company profile on Kia, Battery management systems was a key innovation area identified from patents. Kia's grant share as of February 2024 was 66%. Grant share is based on the ratio of number of grants to total number of patents.

Method for controlling speed limit of hybrid electric vehicle

Source: United States Patent and Trademark Office (USPTO). Credit: Kia Corp

The granted patent (Publication Number: US11926310B2) discloses a method for controlling the speed limit of a hybrid electric vehicle. The method involves determining a virtual vehicle speed and a virtual accelerator position sensor (APS) value based on load conditions and target limit speed. The vehicle operates in different modes based on the APS values, transitioning between modes to either sustain or deplete the battery's state of charge. Additionally, the method determines the transmission gear position based on the virtual vehicle speed and APS value, utilizing different shifting patterns for different modes.

Furthermore, the patent describes a hybrid electric vehicle equipped with an engine, transmission, drive motor, engine clutch with a battery, and a vehicle computer system including a hybrid control unit. The system corrects the virtual vehicle speed and APS value to maintain the target limit speed, operating in different modes to manage the battery's state of charge. The transmission gear position is determined based on the virtual vehicle speed and APS value, with shifting patterns corresponding to the different operating modes. The vehicle computer system also includes a transmission control unit for managing the transmission gear position, working in conjunction with the hybrid control unit to ensure efficient speed limit control in the hybrid electric vehicle.

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GlobalData Patent Analytics tracks bibliographic data, legal events data, point in time patent ownerships, and backward and forward citations from global patenting offices. Textual analysis and official patent classifications are used to group patents into key thematic areas and link them to specific companies across the world’s largest industries.