Patent ID: 8121762
Filing Date: 2012-02-21
Classification: F16H,Y10T

Abstract:
1. A method for automatically engaging a parking lock of one of an automatic and an automated transmission of a motor vehicle that is engaged depending on a drive position (P, R, N, D) selected by a driver of the motor vehicle by way of a selector device, and depending on other operating parameters of the motor vehicle, the method comprising the steps of: one of retaining the selector device in a drive position of “Neutral” (N) and automatically engaging the selector device in the drive position of “Neutral” (N) in the transmission, IF simultaneously a detected current speed (v_Fzg) of the motor vehicle is lower than a predefined low threshold value, AND an ignition circuit of the motor vehicle that acts on a drive motor of the motor vehicle is electrically interrupted, AND the drive position “Neutral” (N) is selected by the selector device; engaging the parking lock of the transmission IF simultaneously the current speed (v_Fzg) of the motor vehicle is lower than the predefined low threshold value, AND the ignition circuit is electrically interrupted, AND one of a drive position “Drive” (D) and a drive position “Reverse” (R) is selected with the selector device; one of engaging the parking lock of the transmission and retaining engagement of the parking lock of the transmission IF simultaneously the current speed (v_Fzg) of the motor vehicle is lower than the predefined low threshold value, AND the ignition circuit is electrically interrupted, AND a drive position “Park” (P) is selected by the selector device, and automatically engaging the parking lock of the transmission IF simultaneously the current speed (v_Fzg) of the motor vehicle is lower than the predefined low threshold value, AND an ignition key in one of a mechanical and an electro-mechanical ignition switch is one of removed and taken outside a defined zone around an electronic ignition switch of the motor vehicle.