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AssigneeZF Friedrichshafen AG
InventorsAndreas Schmidt, Georg Mihatsch, Ruben Cueppers, Max Trautwein, Thorsten Schaetzle
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A method for operating an automatic transmission is provided. The method includes initiating a synchronization of a positive shifting element of the automatic transmission while the automatic transmission is operating at less than a threshold output speed. The method also includes closing a first non-positive shifting element of the automatic transmission and positioning a second non-positive shifting element of the automatic transmission at an engaged configuration of the second non-positive shifting element during the synchronization of the first positive shifting element in order to synchronize the first positive shifting element.
A method for operating an automatic transmission, the automatic transmission having a plurality of non-positive shifting elements and at least one positive shifting element, the method comprising:
A method for operating a nine-speed automatic transmission, the nine-speed automatic transmission including a friction shifting element C, a friction shifting element D, a friction shifting element E, and a dog clutch F, the method comprising:
Dependencies are inferred from the claim text.