Allison Transmission has been granted a patent for an electric powertrain system with two motors, one with uninterrupted connection and the other with a clutch. The clutch includes a positive clutch with a clutch collar and actuator arm for smooth shifting, controlled by a controller based on resolver information. GlobalData’s report on Allison Transmission 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 Allison Transmission, Hybrid powertrains was a key innovation area identified from patents. Allison Transmission's grant share as of February 2024 was 63%. Grant share is based on the ratio of number of grants to total number of patents.
Electric powertrain system with positive clutch for vehicle shifting
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A recently granted patent (Publication Number: US11906021B2) discloses a powertrain system featuring a first electric motor with a direct connection to an output and a second electric motor connected to the output via a clutch mechanism. The clutch includes a positive clutch with various components such as a clutch collar, clutch actuator arm, shift fork, fork actuator arm, pivot pin, and clutch suspension. A controller is integrated into the system to engage the clutch based on resolver information from both electric motors. Additionally, the system incorporates a planetary gear to adjust torque from the second electric motor based on the clutch position.
Furthermore, the powertrain system described in the patent includes detailed configurations and components such as guide pads, fork arms, leaf springs, and a clutch actuator rod collar. The positive clutch utilized in the system is specified to be a dog clutch, and the integration of resolver information from the electric motors is facilitated through a controller area network (CAN). The absence of a synchromesh in the positive clutch design is highlighted, emphasizing the unique features and functionality of the powertrain system outlined in the patent. Overall, the patent showcases a sophisticated powertrain system with innovative clutch mechanisms and resolver-based control for efficient operation and torque management in electric vehicles.
To know more about GlobalData’s detailed insights on Allison Transmission, buy the report here.
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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.
