Torque converter with charge pressure compansation
AssigneeSchaeffler Technologies AG & Co. KG
InventorVictor NORWICH
Life of this patent
Estimating the term…
Abstract
A torque converter includes a front cover configured to receive an input torque, and an impeller having an outer shell coupled to the front cover. A clutch is selectively engageable by a piston. A cover compensator is located axially between the front cover and the piston. The cover compensator is configured to reduce deflection of the front cover in the event of high pressures when changing gears in the transmission. The cover compensator has a radially-innermost sealing surface configured to engage and seal with a transmission input shaft. The cover compensator may also has an aperture to fluidly couple fluid chambers located on either axial side of the cover compensator. This can allow fluid to be forced through the clutch to continuously lubricate the clutch.
Claims20
A torque converter comprising:
- a front cover configured to receive an input torque;
- an impeller having an outer shell non-rotatably connected to the front cover;
- and
- a cover compensator disposed axially between the front cover and the impeller, the cover compensator having an inner portion configured to seal against a transmission input shaft, and an outer portion directly connected to and between the front cover and the outer shell of the impeller.
A torque converter comprising:
- a front cover configured to receive an input torque;
- an impeller having an outer shell coupled to the front cover;
- a clutch selectively engageable by a piston;
- and
- a cover compensator located axially between the front cover and the piston, the cover compensator having a radially-innermost sealing surface configured to engage and seal with a transmission input shaft, the cover compensator further including an aperture to fluidly couple fluid chambers located on either axial side of the cover compensator.
A torque converter comprising:
- a front cover rotatable about an axis;
- a cover compensator non-rotatably fixed to the front cover, the cover compensator having an inner surface configured to seal against an input shaft of a transmission;
- a first fluid chamber defined axially between the front cover and the cover compensator;
- a piston configured to slide axially to engage a clutch;
- and
- a second fluid chamber defined axially between the cover compensator and the piston.
Dependencies are inferred from the claim text.