IP Library Granted Patent US 8,712,655
Granted Patent B2
US 8,712,655 · App. 13/624,031 · Granted Apr 29, 2014

Control system for shifting an automatic transmission

View Patent ↗
Loading inventors, assignments & file history…
Monitor This Case
Get email alerts when status or documents change.
Order Certified Copies
Most orders are placed with the USPTO same day — all within 24 business hours.
Order via The Patent Place →
Pre-filled with this patent's details
Quick Facts
Patent No.
US 8,712,655
App. No.
13/624,031
Granted
Apr 29, 2014
Kind
B2
Abstract

A control system is provided for shifting an automatic transmission of a motor vehicle, which includes, but is not limited to a speed controller, and an electronic control device. Through the electronic control device the parameters vehicle speed, position of the speed controller and acceleration of the speed controller can be captured. Through the electronic control device and through comparison of the captured values of the parameters with predetermined reference values a shifting time is determined for shifting the automatic transmission.

Claims (19)

1. A control system for shifting an automatic transmission of a motor vehicle, comprising:

a speed controller; and

an electronic control device that is configured to:

capture a vehicle speed, a position of the speed controller, and an accelerator of the speed controller;

compare the vehicle speed, the position of the speed controller, and the accelerator of the speed controller with predetermined reference values a shifting time; and

determine the shifting time for downshifting the automatic transmission from the compare of the vehicle speed, the position of the speed controller, and the accelerator of the speed controller with the predetermined reference values.

2. The control system according to claim 1 , wherein the electronic control device is further configured to determine an acceleration of the speed controller as a function of a change of the position of the speed controller.

3. The control system according to claim 1 , wherein the shifting is a downshifting.

4. A method for controlling a shifting of an automatic transmission of a motor vehicle, comprising:

capturing a speed of the motor vehicle with speed sensor;

capturing a position of a speed controller;

capturing an acceleration of the speed controller;

comparing by a processor the speed, the position, and the acceleration with predetermined reference values in an electronic control device;

determining by a processor a shifting time for the automatic transmission based on the comparing; and

shifting corresponding to the shifting time.

5. The method according to claim 4 , wherein the shifting is a downshifting.

6. The method according to claim 4 , wherein the speed sensor is an angle sensor.

7. The method according to claim 4 , wherein the capturing the acceleration of the speed controller is captured via at least one acceleration sensor.

8. The method according to claim 4 , further comprising determining the acceleration of the speed controller as a function of a change of the position of the speed controller.

Assignments (2)
RELEASE OF SECURITY INTEREST Recorded Nov 7, 2014
From: WILMINGTON TRUST COMPANY
To: GM GLOBAL TECHNOLOGY OPERATIONS LLC
Reel/Frame 034287/0601 →
SECURITY AGREEMENT Recorded Jun 26, 2013
From: GM GLOBAL TECHNOLOGY OPERATIONS LLC
To: WILMINGTON TRUST COMPANY
Reel/Frame 030694/0591 →