EP 2545303 A1 20130116 - METHOD FOR CONTROLLING A GEARBOX BRAKE
Title (en)
METHOD FOR CONTROLLING A GEARBOX BRAKE
Title (de)
VERFAHREN ZUR STEUERUNG EINER GETRIEBEBREMSE
Title (fr)
PROCÉDÉ DE COMMANDE D'UN FREIN D'ENGRENAGE
Publication
Application
Priority
- DE 102010002763 A 20100311
- EP 2011052087 W 20110214
Abstract (en)
[origin: WO2011110399A1] The invention relates to a method for controlling a gearbox brake (1) of an automated transmission which is of a layshaft design and is provided with dog clutches, which gearbox brake (1) is operatively connected to an input-side transmission shaft and can be activated hydraulically or pneumatically by means of an inlet valve (13) and an outlet valve (15), which are each embodied as a 2/2-way solenoid proportional valve, wherein, when shifting up from a load gearspeed into a target gearspeed, after the load gearspeed has been disengaged in order to synchronize the target gearspeed the inlet valve (13) is initially opened, and after a shifting rotational speed (nu) has been reached the inlet valve (13) is closed, and the outlet valve (15) is opened in order to switch off the gearbox brake (1) in such a way that the input rotational speed (nE) reaches a predefined synchronizing rotational speed (nSync) at the end of the switching process (nE = nSync). According to the invention, the control properties of the solenoid proportional valves (13, 15) which are provided are utilized and the duration of the synchronizing processes are harmonized and their quality improved with relatively little expenditure by virtue of the fact that at least the outlet valve (15) is opened in a controlled fashion as a function of the difference in rotational speed (?n = nA - nE) between the input rotational speed (nE) and an output rotational speed (nA).
IPC 8 full level
F16H 3/12 (2006.01); F16H 59/40 (2006.01); F16H 59/42 (2006.01); F16H 59/46 (2006.01); F16H 61/00 (2006.01); F16H 61/04 (2006.01)
CPC (source: EP US)
F16H 61/0403 (2013.01 - EP US); B60Y 2400/406 (2013.01 - EP US); F16H 59/40 (2013.01 - EP US); F16H 59/42 (2013.01 - EP US); F16H 59/46 (2013.01 - EP US); F16H 61/682 (2013.01 - EP US); F16H 2003/123 (2013.01 - EP US); F16H 2061/0078 (2013.01 - EP US); F16H 2061/0411 (2013.01 - EP US); F16H 2061/0474 (2013.01 - EP US)
Citation (search report)
See references of WO 2011110399A1
Designated contracting state (EPC)
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
DOCDB simple family (publication)
DE 102010002763 A1 20110915; CN 102792066 A 20121121; EP 2545303 A1 20130116; US 2012330520 A1 20121227; WO 2011110399 A1 20110915
DOCDB simple family (application)
DE 102010002763 A 20100311; CN 201180013494 A 20110214; EP 11703667 A 20110214; EP 2011052087 W 20110214; US 201113581332 A 20110214