| 发明名称 |
Torque converter clutch with low back pressure |
| 摘要 |
A torque converter includes an impeller shell and a backing plate defining at least a portion of a first hydraulic chamber, a cover and a piston plate defining at least a portion of a second hydraulic chamber, and a third hydraulic chamber. The third chamber is sealed from the first and second hydraulic chambers such that a hydraulic flow between the third chamber and the other chambers is at least restricted. In an example embodiment, the first chamber is for being pressurized to prevent cavitation in the turbine, stator, or impeller, the second or third chamber is for being pressurized to engage the lockup clutch, and the other of the second or third chamber is for being de-pressurized to reduce a back pressure on the lockup clutch piston plate. |
| 申请公布号 |
US9309956(B2) |
申请公布日期 |
2016.04.12 |
| 申请号 |
US201213595565 |
申请日期 |
2012.08.27 |
| 申请人 |
Schaeffler Technologies AG & Co. KG |
发明人 |
Lindemann Patrick;Avins David |
| 分类号 |
F16D35/00;F16H45/02 |
主分类号 |
F16D35/00 |
| 代理机构 |
|
代理人 |
Warner Kathryn A. |
| 主权项 |
1. A torque converter comprising:
an impeller shell and a backing plate defining at least a portion of a first hydraulic chamber; a cover and a piston plate defining at least a portion of a second hydraulic chamber; the backing plate, sealed to the cover, defining at least a portion of a third hydraulic chamber, sealed from the first and second hydraulic chambers such that a hydraulic flow between the third chamber and the other chambers is at least restricted; and, a lockup clutch including the piston plate, wherein:
the first chamber is for being pressurized to prevent cavitation;the second chamber is for being de-pressurized to reduce the back pressure on the piston plate; and,the third chamber is for being pressurized to engage the lockup clutch. |
| 地址 |
Herzogenaurach DE |
