Apparatus and method for controlling an automatic transmission

US6622581B2 · kind B2 · utility

Assignee

• Dr. Ing. h.c. F. Porsche AG · DE

Inventors

• Willi Seidel · Lambach, DE
• Josef Petersmann · Wimsheim, DE

Key dates

• Filing date: Oct 19, 2001
• Grant date: Sep 23, 2003
• Expiry date: Oct 19, 2021

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T74/19251
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

An apparatus and method for controlling an automatic transmission having a controller that changes temporarily from the automatic operating mode, position D to a driver-influenced operating mode if a second rocker switch, which is arrange on the steering wheel, is activated. The automatic operating mode is not discontinued permanently, because after a set time has elapsed, the automatic operating mode becomes active again. Returning to the automatic operating mode is only possible if the current transverse acceleration is below a preset limiting value, and traction operation is in effect at the same time. The remaining time before returning to the automatic operating mode is set to a minimum value, after the manual operating mode has briefly been called up, as soon as one of the referenced conditions, which causes a return to the automatic operating mode to be suppressed, is no longer in effect.