Patent application number | Description | Published |
20080202882 | Multi-function torque converter with a sealed impeller clutch apply chamber and method of forming and operating a multi-function torque converter - A torque converter including: a sealed liquid-tight fluid-containing chamber; an impeller clutch; and at least one piston for the clutch forming a part of the chamber. A torque converter including: first and second fluid-containing chambers; a torque converter clutch; a piston plate for the clutch having a one-way opening and forming part of the first chamber. The first chamber is liquid-tight for pressure levels greater than in the second chamber. During torque converter mode, fluid flows from a torus through the second chamber and one-way opening into the first chamber. A multi-function torque converter including: an impeller clutch; at least one impeller piston plate; a plate; and a fluid-containing chamber. The chamber is at least partially formed by a combination of one or more of the impeller plates and the plate and the combination is at least indirectly connected to balance axial forces generated by pressurization of the chamber. | 08-28-2008 |
20080257678 | Driver unit for a clutch assembly, in particular a wet-running double clutch assembly - A driver module for clutches, in particular wet-running double clutch assemblies, including a clutch housing and a cover which are connected with each other, enclosing an interior space. The cover is rotationally fixed in relation to the clutch housing in the axial direction and in the circumferential direction by a connecting ring. | 10-23-2008 |
20090014269 | Two pass multi-function torque converter - A multi-function torque converter including: an apply pressure chamber for a torque converter clutch; a first pressure chamber including a torus; and a resilient flow control element in fluid communication with the apply chamber and the first pressure chamber and arranged to control fluid flow to the apply pressure chamber. The resilient flow element is displaceable to block fluid flow to the apply pressure chamber in torque converter mode for the torque converter and to enable fluid flow to the apply chamber in lock-up mode. The torque converter includes a second pressure chamber and the clutch includes a piston plate at least partially bounding the apply pressure chamber and the second pressure chamber. | 01-15-2009 |
20090127050 | Normally closed three pass multi-function torque converter - A multi-function torque converter, including a pump clutch, and a resilient element arranged to close the pump clutch during operation of the torque converter in a torque converter mode. In one embodiment, the resilient element is arranged to close the pump clutch during operation of the torque converter in lock-up mode. In one embodiment, the torque converter includes a torque converter clutch. In one embodiment, the pump clutch and the torque converter clutch are closed during operation of the torque converter in a lock-up mode. | 05-21-2009 |
20110088992 | PISTON PLATE CONNECTION WITH BLIND RIVETING - A clutch assembly for a torque converter, including: a cover; a piston plate including a hole; and a rivet in the hole. The rivet includes a rivet head. Prior to applying pressure to the rivet to fix the rivet to the piston plate, the rivet head is clamped between the piston plate and the cover. A clutch assembly for a torque converter, including: a cover; a piston plate with a hole; a leaf spring with a first end fixedly attached to the cover and a second end; and a rivet connecting the second end of the leaf spring to the piston plate. The rivet includes: a head disposed between the leaf spring second end and the cover; and a shaft in the piston plate hole. The piston plate or the cover is deflectable to clamp the rivet head between the cover and the piston plate before the shaft is expanded. | 04-21-2011 |
20110315503 | SELECTABLE VALVE ASSEMBLY FOR A VEHICLE TRANSMISSION - A hydraulic valve assembly for controlling a clutch in a vehicle transmission. The valve assembly includes a housing with a first port for connection to a source of pressurized hydraulic fluid, a displaceable sealing piston disposed within the housing, a valve spring for displacing the sealing piston, a snap-spring having first and second equilibrium positions, and an overstroke spring. In the first equilibrium position a spring force displaces the sealing piston to uncover the first port to enable fluid flow through the valve, and in the second equilibrium position the valve spring displaces the sealing piston to block the first port to block fluid flow through the valve. Moving from the first equilibrium position to the second equilibrium position includes displacing the overstroke spring. | 12-29-2011 |
20120217114 | TRANSMISSION WITH A COMMON ACTUATOR FOR TWO CLUTCHES - A clutch assembly for a transmission, including: first and second clutches; and an actuation assembly including an actuator for engaging the first and second clutches. The first clutch is arranged to be connected to a planet carrier for a planetary gear set for the transmission so that the planet carrier and a first portion of the first clutch rotate in unison. The first clutch is arranged to be connected to an output shaft for the transmission so that a second portion of the first clutch and the output shaft rotate in unison. The second clutch is arranged to be connected to a ring gear for the planetary gear set so that the ring gear and a portion of the second clutch rotate in unison. | 08-30-2012 |
20130075222 | PRESSURE HOLDING TRANSMISSION CLUTCH WITH BALL CHECK VALVE - A check valve assembly for a clutch, including: an annular-shaped ring element including a first portion with: a first channel wholly enclosed by the first portion; a first through-bore between a radially inner surface of the first portion and the first channel; and a second through-bore between a radially outer surface of the first portion and the first channel. The assembly includes a first pressure regulating assembly at least partially disposed within the first channel and including: a spool axially displaceable within the first channel and including a space enclosed by the spool; a first ball disposed within the space and the first channel; and a first spring engaged with the spool. The spool is arranged to axially displace in response to hydraulic pressure at the first through-bore and axial force applied by the first spring to displace the first ball to block or unblock flow between the first and second through-bores. | 03-28-2013 |
20130233396 | LATCHING CLUTCH VALVE - A hydraulic valve for a vehicle transmission includes a housing, a valve piston, an actuating piston, and a bi-stable spring. The housing is connectable with an inlet passage and an outlet passage for the transmission. The valve piston is sealed to the housing and selectively blocks a fluid flow between the inlet passage and the outlet passage. The actuating piston is sealed to the housing and is arranged to be displaceable by a hydraulic pressure in the inlet passage. The bi-stable spring is engaged with the valve piston and the actuating piston. In some example embodiments, the bi-stable spring is axially fixed with regards to the valve piston and displaceable by the actuating piston. | 09-12-2013 |