Patent · US Active

Method and device for controlling a motor vehicle drive train

US8366588B2 · kind B2 · utility

2Cited by

21References

16Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Marcus Gansohr · Salem, DE
Florian Schneider · Obernzenn, DE
Thomas Jager · Meckenbeuren, DE

Key dates

Filing date	Mar 15, 2006
Grant date	Feb 5, 2013
Priority date	—
Expiry date	Jan 22, 2030

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16D2500/511
WIPO fieldTransport
WIPO sectorMechanical engineering

Abstract

A method for controlling a drivetrain including an automatically shifted starting clutch and gear-shift clutch and a transmission, with a non self-locking clutch actuator, a gear actuator for engaging and disengaging transmission gears and a control unit which generates control commands for the clutch actuator and gear actuator and transmits such commands to the actuators such that, when the vehicle is at rest and a gear is engaged and if the clutch actuator fails, the clutch does not inadvertently engage. When a transmission gear is engaged, a control command is generated and sent for the clutch actuator to disengage the clutch. Thereafter, the vehicle speed is determined and if the speed is essentially zero and the clutch begins to engage, a control command is sent to the gear actuator to shift the transmission to its neutral position.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.