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This is a record of a document published elsewhere, first published by the United States Patent and Trademark Office, as US-12607258-B2, on 21 April 2026. OpenTechnical did not first disclose it. The identifier, hashes and timestamps below record what this library served and when, not when the material became public. View the original.

OT-2026-000000280

Method for adapting a pressure characteristic line of a friction-locking shifting element of a transmission, and controller

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Industrial Motion & Power Transmission › Rotary Motion
Original source
US-12607258-B2, the United States Patent and Trademark Office, 21 April 2026
Document SHA-256
d4d9e453b5d5ec188a214c7ace7ffffaca3e34d50157eec72a3a38247588f11c

Abstract

A method for adapting a pressure characteristic curve of a friction-locking shift element of a transmission of a motor vehicle includes actuating the shift element using a rapid filling pressure for a first time, shorter than an adapted rapid filling time by a defined period of time. The method further includes subsequently actuating the shift element using a waiting pressure for a waiting time, the waiting pressure being lower than the rapid filling pressure. The method further includes subsequently actuating the shift element using the rapid filling pressure during a second time, equal to the defined period of time, and ascertaining a reaction of the transmission to adaptation. Additionally, the method includes determining, when the reaction of the transmission to the adaptation corresponds to a reaction to the rapid filling time adaptation, a pressure at a characteristic point on the curve being adapted as the waiting pressure.

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OpenTechnical Publication OT-2026-000000280, “Method for adapting a pressure characteristic line of a friction-locking shifting element of a transmission, and controller,” published September 15, 2026 at 19:02:41 UTC, https://opentechnical.org/p/OT-2026-000000280.

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