Invention Grant
- Patent Title: Method for improvement of the shifting quality at the start of the initial operation of a new automatic gearbox or an automatized gearbox of a motor vehicle
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Application No.: US14608349Application Date: 2015-01-29
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Publication No.: US09651148B2Publication Date: 2017-05-16
- Inventor: Christoph Hess , Philipp Koelbl
- Applicant: ZF Friedrichshafen AG
- Applicant Address: DE Friedrichshafen
- Assignee: ZF Friedrichshafen AG
- Current Assignee: ZF Friedrichshafen AG
- Current Assignee Address: DE Friedrichshafen
- Agency: Dority & Manning, P.A.
- Priority: DE102014201603 20140130
- Main IPC: F16H61/18
- IPC: F16H61/18 ; F16H61/06

Abstract:
Within of the method for improving the shifting quality at the start of the commissioning of a new automatic transmission or an automated transmission of a motor vehicle, a filling pressure adaptation is carried out by individual gearshifts. At least one adaptation counter is monitored, which indicates the number of the carried out filling pressure adaptations of at least one shifting element with one individual gearshift from the commissioning of the new automatic transmission or automated transmission. As long as the value of a specified number of monitored adaptation counters falls below a specified threshold value, no D-R and R-D reversing operations are permitted by the transmission control.
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