Process of controlling a drive train of a motor vehicle

• US 8,585,546 B2
• Filed: 06/05/2009
• Issued: 11/19/2013
• Est. Priority Date: 06/12/2008
• Status: Expired due to Fees

• Current Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Original Assignee: Schaeffler Technologies AG & Co.KG (INA-Holding Schaeffler GmbH & Co. KG)
• Inventors: Stehle, Bjoern, Schweizer, Alexander, Kuestler, Gerald
• Primary Examiner(s): LEWIS, TISHA D
• Application Number:
  US12/479,439
• Publication Number:
  US 20090312149A1
• Time in Patent Office: 1,628 Days
• Field of Search: 477/92, 477 94- 96, 477/906, 701/62, 701/71, 192215-226
• US Class Current: 477/92
• CPC Class Codes: B60T 2270/402 Back-up
• CPC Class Codes: B60T 2270/613 ESP features related thereto
• CPC Class Codes: B60T 8/1755 Brake regulation specially adapted to control the stability of the vehicle, e.g. taking into account yaw rate or transverse acceleration in a curve road vehicle drive control systems for control of driving stability otherwise than by controlling a particular sub-unit B60W30/02
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/08 including control of electric propulsion units, e.g. motors or generators
• CPC Class Codes: B60W 10/184 with wheel brakes
• CPC Class Codes: B60W 20/00 Control systems specially adapted for hybrid vehicles hybrid vehicle design, B60K6/00; electric vehicles B60L
• CPC Class Codes: B60W 20/50 Control strategies for responding to system failures, e.g. for fault diagnosis, failsafe operation or limp mode
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2710/0666 Engine torque
• CPC Class Codes: B60W 50/038 Limiting the input power, torque or speed
• CPC Class Codes: F16H 59/70 dependent on the ratio established
• CPC Class Codes: F16H 61/0059 Braking of gear output shaft using simultaneous engagement of friction devices applied for different gear ratios
• CPC Class Codes: F16H 61/12 Detecting malfunction or potential malfunction, e.g. fail safe in control of hydrostatic gearing F16H61/4192; Circumventing or fixing failures
• CPC Class Codes: Y02T 10/62 Hybrid vehicles

Abstract

A process for controlling a drive train with an internal combustion engine, a transmission and an automatically actuated brake system. In the event of a defect of the transmission, retardation is effected by means of the automatically actuated brake system in order to avoid impermissibly high speeds in the drive train.

Claims

1. A process for controlling a drive train of a motor vehicle with an internal combustion engine, an automated parallel shift transmission with first and second partial drive trains, and an automatic brake system, the process comprising:

detecting a blocked gear in the first partial drive train of the automated parallel shift transmission while the vehicle is in motion; and

,

operating the automatic brake system to retard the motor vehicle, wherein;

when the transmission input shaft of the first partial drive train is accelerated when the second partial drive train is operated with a gear with a higher ratio than the blocked gear.