Patent · US Active

Method for controlling a rolling or coasting function of a vehicle

US8641579B2 · kind B2 · utility

0Cited by

4References

8Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Rainer Petzold · Friedrichshafen, DE
Peter Herter · Ravensburg, DE
Mario Steinborn · Friedrichshafen, DE
Franz Bitzer · Friedrichshafen, DE

Key dates

Filing date	Oct 13, 2010
Grant date	Feb 4, 2014
Priority date	—
Expiry date	Jan 3, 2031

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2306/44
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method is proposed for controlling a through-connection clutch of a vehicle, in which an interlocking portion of the clutch is opened when the drive-train is virtually free from torque, a shifting operation is then carried out, and after the shifting operation the clutch is closed again. According to the invention, the torque transmitted by the interlocked connection in the clutch is influenced by controlling the motor in order to produce a torque-free condition at the interlocked connection in the clutch, in such manner that the interlocked connection is pre-stressed before the torque-free condition has been reached and separated immediately only when the torque-free condition is reached.

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