Specifications

The Patent Office Journal 17/12/2010
4579
(12) PATENT APPLICATION PUBLICATION (21) Application No.3967/CHENP/2010 A
(19) INDIA
(22) Date of filing of Application :25/06/2010 (43) Publication Date : 17/12/2010
(54) Title of the invention : AUTOMATIC TRANSMISSION PROVIDED WITH A HYDRAULICALLY ASSISTED CLUTCH
AND METHOD FOR OPERATING THE SAME
(51) International classification :F16H61/662
(31) Priority Document No :1034876
(32) Priority Date :28/12/2007
(33) Name of priority country :Netherlands
(86) International Application No
Filing Date
:PCT/NL08/050745
:25/11/2008
(87) International Publication No
:WO 2009/084952
A1
(61) Patent of Addition to Application
Number
Filing Date
:NA
:NA
(62) Divisional to Application Number
Filing Date
:NA
:NA
(71)Name of Applicant :
1)ROBERT BOSCH GMBH
Address of Applicant :POSTFACH 30 02 20, 70442
STUTTGART Germany
(72)Name of Inventor :
1)VAN WIJK, WILHELMUS JOHANNES MARIA
2)VAN DER SLUIS, FRANCIS MARIA ANTONIUS
(57) Abstract :
Method for operating an automatic transmission comprising a hydraulically assisted clutch (10) having an input shaft (8) and an output
shaft (6), which can be connected to one another and/or disconnected, and a hydraulic control system which comprises at least a
medium reservoir (100), a pump (101) and a hydraulic passage (110) for supplying a flow of hydraulic medium to the clutch (10) in
order to cool the latter. According to the invention, the coolant stream to the clutch (10) is interrupted if the clutch (10) is closed
completely, that is when the input shaft (8) and the output shaft (6) thereof are securely drive-connected to one another.
No. of Pages : 17 No. of Claims : 10