发明名称 |
HYDRAULIC EMERGENCY CONTROL FOR TRANSMISSION RATIO-DEPENDENT VARIATION OF THE HYDRAULIC OIL PRESSURE IN THE HYDRAULIC CONICAL PULLEY AXIAL ADJUSTMENT MECHANISMS OF A CONTINUOUSLY VARIABLE TRANSMISSION |
摘要 |
PCT No. PCT/EP96/01947 Sec. 371 Date Nov. 4, 1997 Sec. 102(e) Date Nov. 4, 1997 PCT Filed May 9, 1996 PCT Pub. No. WO96/37717 PCT Pub. Date Nov. 28, 1996A hydraulic emergency control system for a continuous looped gear type continuously variable transmission (10) includes first and second hydraulic beveled conical pulley axial actuators controlling a gear ratio. A pump supplies a first piston chamber (13) of said first axial actuator via a sensor valve (20), wherein the sensor valve (20) is controlled by a flow control valve (73) connected downstream of the pump (80). The pump (80) supplies a second piston chamber (17) of the second axial actuator, with a pressure relief valve (40) limiting fluid pressure in said second piston chamber. Fluid in the second piston chamber (17) is controlled as a function of the fluid pressure in the first piston chamber (13) via a control line (52, 113). |
申请公布号 |
EP0828956(A1) |
申请公布日期 |
1998.03.18 |
申请号 |
EP19960919728 |
申请日期 |
1996.05.09 |
申请人 |
ROBERT BOSCH GMBH;VAN DOORNE'S TRANSMISSIE B.V. |
发明人 |
SPIESS, EWALD;HAECKER, HANS;LUH, JOACHIM;BAUERLE, PETER;PELDERS, HENDRIKUS, A., A., W.;VAN WIJK, WILHELMUS, J., M. |
分类号 |
F16H9/00;F16H61/00;F16H61/12;F16H61/662;(IPC1-7):F16H61/00 |
主分类号 |
F16H9/00 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|