Mitsubishi Motors has been granted a patent for a vehicle control device that includes a motor, transmission unit, temperature sensor, and vehicle speed sensor. The controller switches the transmission unit based on temperature and vehicle speed, improving efficiency as speed increases. GlobalData’s report on Mitsubishi Motors 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 Mitsubishi Motors, HEV energy management was a key innovation area identified from patents. Mitsubishi Motors's grant share as of April 2024 was 51%. Grant share is based on the ratio of number of grants to total number of patents.

Vehicle transmission control based on motor temperature and vehicle speed

Source: United States Patent and Trademark Office (USPTO). Credit: Mitsubishi Motors Corporation

A recently granted patent (Publication Number: US11958470B2) discloses a controller designed to manage a vehicle's motor and transmission system efficiently. The controller includes sensors to detect motor temperature and vehicle speed, along with a transmission controller that switches between connection and disconnection based on these parameters. The controller is programmed to adjust the switching temperature based on vehicle speed, ensuring optimal performance as the vehicle accelerates or decelerates. Additionally, the controller incorporates a brake sensor to detect braking intensity, enabling the system to engage regeneration when necessary, further enhancing energy efficiency.

Moreover, the controller integrates a charge amount sensor to monitor the battery's power supply, allowing for dynamic adjustments in transmission switching temperature based on the battery's charge level. This feature ensures that the transmission operates optimally, balancing performance and energy consumption based on the available power source. By incorporating multiple sensors and intelligent control algorithms, the controller offers a comprehensive solution for managing the vehicle's motor, transmission, and power supply system efficiently, enhancing overall performance and energy efficiency.

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GlobalData, the leading provider of industry intelligence, provided the underlying data, research, and analysis used to produce this article.

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.