Invention Grant
- Patent Title: Method for operating an automatic transmission
- Patent Title (中): 自动变速器的运行方法
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Application No.: US14512716Application Date: 2014-10-13
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Publication No.: US09228656B1Publication Date: 2016-01-05
- Inventor: Andreas Schmidt , Ruben Cueppers , Max Trautwein
- Applicant: ZF Friedrichshafen AG
- Applicant Address: DE Friedshafen
- Assignee: ZF FRIEDRICHSHAFEN AG
- Current Assignee: ZF FRIEDRICHSHAFEN AG
- Current Assignee Address: DE Friedshafen
- Agency: Dority & Manning, P.A.
- Main IPC: F16H3/44
- IPC: F16H3/44 ; F16H61/04 ; F16H61/14

Abstract:
A method for operating an automatic transmission is provided. The method includes synchronizing a first positive shifting element of the at least one positive shifting element with a first process, a second process or a third process depending upon an input speed and/or an output speed of the automatic transmission. The first process, the second process and the third process can provide smooth and/or satisfactory shifting of the first positive shifting element at various input speeds and output speeds of the automatic transmission.
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