Modular hybrid transmission secondary stator cooling
AssigneeSchaeffler Technologies AG & Co. KG
InventorDrew Hilty
Life of this patent
Estimating the term…
Abstract
A modular hybrid transmission including a valve configured to direct fluid from a torque converter of the modular hybrid transmission to an electric motor of the modular hybrid transmission when pressure inside of the torque converter exceeds a threshold value. The threshold value typically corresponds to an upper range of torque converter operating pressure coincident with peak electric motor operation.
Claims20
A modular hybrid transmission comprising:
- an electric motor;
- a torque converter driven by the electric motor;
- wherein the torque converter includes a pump and a cover defining a housing;
- and
- wherein the housing of the torque converter includes a valve for selectively restricting or allowing a flow of fluid from the housing of the torque converter to the electric motor.
A torque converter for a modular hybrid transmission comprising:
- a housing;
- and
- a pump configured to be driven by an electric motor;
- wherein the housing of the torque converter includes a reed valve for selectively restricting or allowing a flow of fluid from the torque converter to the electric motor;
- wherein the valve includes a reed valve;
- wherein the reed valve is configured to open when a pressure inside the torque converter exceeds a threshold value;
- and
- wherein the threshold value is within 30% of a maximum torque converter pressure.
(canceled)
(canceled)
(canceled)
A method of cooling an electric motor of a modular hybrid transmission comprising:
- providing a modular hybrid transmission comprising:
- an electric motor;
- a torque converter driven by the electric motor;
- the torque converter including a pump and a cover defining a housing;
- and
- wherein the housing of the torque converter includes a valve for selectively restricting or
- allowing a flow of fluid from the housing to the electric motor;
- operating the modular hybrid transmission to generate fluid pressure in the torque converter;
- and
- supplying fluid from the housing of the torque converter to the electric motor via the valve based at least in part on an operational characteristic of the modular hybrid transmission.
Dependencies are inferred from the claim text.