Patent · US Active

Method for controlling a manual transmission in the event of a disorderly engine behavior

US7699750B2 · kind B2 · utility

0Cited by

4References

7Claims

0Family size

Assignee

ZF FRIEDRICHSHAFEN AG · DE

Inventors

Reinhard Mertinkat · Mittelbiberach, DE
Rainer Petzold · Friedrichshafen, DE
Andreas Wolf · Munich, DE
Gerd Sauermann · Markdorf, DE
Klaus Hensinger · Friedrichshafen, DE
Wolfgang Groner · Friedrichshafen, DE
Ulrich Reith · Schlier, DE

Key dates

Filing date	Dec 2, 2005
Grant date	Apr 20, 2010
Priority date	—
Expiry date	Jan 2, 2027

Classification

Technology area (CPC F)Mechanical Engineering; Lighting; Heating
CPC primaryF16H2306/48
WIPO fieldMechanical elements
WIPO sectorMechanical engineering

Abstract

A method for controlling a partially unsynchronized manual transmission, which realizes the increase of a rotational speed of a transmission part to be synchronized during a gear change procedure by connecting one element of the transmission, via a shiftable clutch, to a drive motor and by making available to this drive motor the required rotational speed as well as the necessary torque at its output shaft. It is also provided that when the rotational speed and/or the torque made available by the drive motor is not sufficient to ensure the synchronization of the manual transmission within a fixed time period, a shifting strategy is pursued, which prevents an unintentional holding of the manual transmission in its neutral position or idle position.

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