- Patent Title: Method and control apparatus for operating a vehicle drive train
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Application No.: US16700548Application Date: 2019-12-02
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Publication No.: US10969007B2Publication Date: 2021-04-06
- Inventor: Tobias Brand , Markus Maurer
- 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: DE102018220872.7 20181203
- Main IPC: F16H61/02
- IPC: F16H61/02 ; F16H61/16

Abstract:
A method for operating a vehicle drive train (1) comprising a prime mover (2), transmission (3), and comprising a driven end (4) may include limiting, during a demand for engaging a form-locking shift element (A, F) of the transmission (3) when a rotational speed of the driven end (4) is close to zero, a rate of change of a transmission input torque present at the form-locking shift element (A, F) to a value. Below the value, forces present at the form-locking shift element (A, F) during an engagement process are less than a load limit. Above the value, irreversible damage to the form-locking shift element (A, F) occurs.
Public/Granted literature
- US20200173550A1 Method and Control Apparatus for Operating a Vehicle Drive Train Public/Granted day:2020-06-04
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