Invention Grant
- Patent Title: Method for implementing shifts from a source gear to a target gear of an automatic shift transmission, in particular downshifts of an automatic shift transmission
- Patent Title (中): 实现从自动换挡变速器的源齿轮到目标齿轮的换档的方法,特别是自动换档变速器的降档
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Application No.: US11805322Application Date: 2007-05-23
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Publication No.: US07678018B2Publication Date: 2010-03-16
- Inventor: Stephan Schaefer
- Applicant: Stephan Schaefer
- Applicant Address: DE Wolfsburg
- Assignee: Volkswagen AG
- Current Assignee: Volkswagen AG
- Current Assignee Address: DE Wolfsburg
- Agency: Manfred Beck, P.A.
- Priority: DE102006024884 20060524
- Main IPC: F16H59/00
- IPC: F16H59/00

Abstract:
A method for implementing shifts from a source gear to a target gear of an automatic shift transmission includes storing a respective upshift threshold and a respective downshift threshold for each possible sequential gear shift. The respective upshift threshold and the respective downshift threshold are defined in dependence of an accelerator pedal position, such that a limit value that is valid for a respective upshift or downshift is stored as a vehicle speed value in a control device. The vehicle speed that changes while the motor vehicle is driving and a changing accelerator pedal position are measured. Downshifts are simplified for a driver by configuring at least two downshift thresholds to be substantially horizontally extending in a first region of a possible accelerator pedal position and at least partly step-shaped in a second region of the possible accelerator pedal position.
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