Dana. has been granted a patent for a powertrain method that involves adjusting couplings between a synchronization shaft and both input and output shafts in response to clutch drag torque, based on the relative speeds of these shafts. GlobalData’s report on Dana 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 Dana, Differential gear shafts was a key innovation area identified from patents. Dana's grant share as of July 2024 was 56%. Grant share is based on the ratio of number of grants to total number of patents.
Powertrain coupling adjustment based on clutch drag torque
The patent US12072022B2 outlines a method and system for optimizing powertrain performance during gear changes by addressing clutch drag torque. The method involves adjusting the positions of couplings between a synchronization shaft, input shaft, and output shaft based on the relative speeds of these shafts. Specifically, it details how to position the first and second couplings to a closed state when the synchronization shaft's speed deviates from that of the input and output shafts. Additionally, the method includes a stepwise adjustment of synchronization pressure, which is influenced by feed-forward compensation for clutch drag torque, ensuring smoother transitions during gear changes.
The system described in the patent comprises a controller that executes computer-readable instructions to manage the adjustments of the couplings in response to clutch drag torque. This system is designed to enhance the efficiency of gear changes by monitoring the speeds of the input, synchronization, and output shafts. The controller can also implement closed-loop control to gradually increase synchronization pressure to a desired level, further refining the gear change process. The arrangement of the couplings and shafts within a transmission casing is also specified, indicating a comprehensive approach to improving powertrain dynamics and performance.
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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.
