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US 10,948,062 B2Granted
Torque converter for modular hybrid transmission including coast engagement structure
AssigneeSchaeffler Technologies AG & Co. KG
InventorsAyyalraju Satyaseelan, John Ramsey
Life of this patent
Estimating the term…
Abstract
A torque converter includes a cover, an impeller including an impeller engagement section, an axially movable turbine piston including a turbine engagement section configured for engaging the impeller engagement section to form a lockup clutch and a coast engagement structure configured for contacting the cover to limit axial movement of the turbine piston away from the impeller in a coast condition.
Claims15
A torque converter comprising:
- a cover;
- an impeller including an impeller engagement section;
- an axially movable turbine piston including a turbine engagement section configured for engaging the impeller engagement section to form a lockup clutch;
- a spring configured for contacting the cover to limit axial movement of the turbine piston away from the impeller in a coast condition in which the turbine piston is rotating at a greater angular velocity than the impeller and the cover;
- and
- at least one further part stacked in an axial direction between the spring and the turbine piston, the at least one further part configured for contacting the turbine piston in the coast condition,
- wherein the spring contacts an axially extending section of the cover,
- wherein the turbine piston includes a turbine shell supporting a plurality of turbine blades, the turbine shell including an outer radial extension radially outside of the turbine blades, the outer radial extension forming the engagement section of the turbine piston, the least one further part including a bushing fixed to the spring, the bushing arranged for contacting the outer radial extension during the coast condition.
5 more elements
A torque converter comprising:
- a cover;
- an impeller including an impeller engagement section;
- an axially movable turbine piston including a turbine engagement section configured for engaging the impeller engagement section to form a lockup clutch;
- and
- a coast engagement structure configured for contacting the cover to limit axial movement of the turbine piston away from the impeller in a coast condition in which the turbine piston is rotating at a greater angular velocity than the impeller and the cover,
- wherein the cover includes a front cover and a rear cover forming a shell of the impeller, the front cover including an axially extending section welded to the rear cover and a radially extending section radially inward from the axially extending section, the coast engagement structure including a spring plate configured to contact the radially extending section of the front cover to limit axial movement of the turbine piston away from the impeller in the coast condition, the radially extending section of the front cover intersecting a center axis of the torque converter which the turbine piston is designed to rotate around.
3 more elements
A method of constructing a torque converter comprising:
- providing a cover, an impeller including an impeller engagement section and an axially movable turbine piston including a turbine engagement section configured for engaging the impeller engagement section to form a lockup clutch;
- and
- arranging a spring in contact with the cover to limit axial movement of the turbine piston away from the impeller in a coast condition in which the turbine piston is rotating at a greater angular velocity than the impeller and the cover;
- and
- providing at least one further part stacked in an axial direction between the spring and the turbine piston, the at least one further part configured for contacting the turbine piston in the coast condition,
- wherein the spring contacts an axially extending section of the cover,
- wherein the turbine piston includes a turbine shell supporting a plurality of turbine blades, the turbine shell including an outer radial extension radially outside of the turbine blades, the outer radial extension forming the engagement section of the turbine piston, the least one further part including a bushing fixed to the spring, the bushing arranged for contacting the outer radial extension during the coast condition.
4 more elements
Dependencies are inferred from the claim text.