Controller for an automatic transmission in a motor vehicle

US6006151A · kind A · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventor

• Friedrich Graf · Eggenfelden, DE

Key dates

• Filing date: Jul 13, 1998
• Grant date: Dec 21, 1999
• Expiry date: Jul 13, 2018

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F16H2061/0087
• WIPO field: Mechanical elements
• WIPO sector: Mechanical engineering

Abstract

The controller is used, in particular, for controlling an automatic transmission in a motor vehicle. An actuation signal is defined and used to determine the gear speed which is to be selected or the transmission ratio which is to be set. The actuation signal is a function of the position of the accelerator pedal, of the vehicle speed or, possibly, of further measured of variables. The controller includes a classification system which receives the measured variables and parameters derived therefrom as input variables and which generates output variables with reference to an evaluation of the measured variables and parameters. The output variables take into account certain assignments of the driving behavior of the driver, the respective driving state or the respective load state of the motor vehicle. The controller contains an evaluation circuit in which an intervention signal, which is generated by manual intervention by the driver, is evaluated and, subsequent thereto, one of the prescribed assignments is modified by emitting an evaluation signal. In this context, subfunctions of the controller can be switched off or important stored parameters of subfunctions can be modified wit…