Transaxle having chain final drive
AssigneeFord Global Technologies, LLC
InventorsDavid Allen Janson, Gregory Daniel Goleski, David Gon Oh
Life of this patent
Estimating the term…
Abstract
A transmission uses a chain and sprocket final drive that provides all final drive torque multiplication in addition to transferring power to the differential axis. The transmission includes a front support structure that provides for a small driving sprocket. The front support includes an insert made of hardened material that can serve as the inner bearing race for the driving sprocket. In some embodiments, four fluid passageways are provided to the torque converter. In some embodiments, the park gear may be integrated with the driven sprocket.
Claims19
A transmission comprising:
- a front support including a sleeve portion having an outer circumferential surface configured as an inner bearing race;
- a first sprocket defining an inner circumferential surface that circumscribes the sleeve portion;
- a roller bearing radially disposed between the inner and outer circumferential surfaces to supported the first sprocket for rotation about the sleeve portion, the roller bearing including an outer race seated against the inner circumferential surface and roller elements that ride directly on the outer circumferential surface;
- a second sprocket bolted to a differential carrier for rotation therewith;
- and
- a chain engaging the first and second sprockets.
A transmission comprising:
- a bell housing;
- an intermediate member fixed to the bell housing;
- a front support body fixed to the intermediate member and configured to support a turbine shaft;
- and
- a front support insert fixed to the front support body and configured to support a first sprocket;
- and
- wherein the intermediate member, front support body, front support insert, and turbine shaft define two fluid passageways from a valve body to a torque converter.
A transmission front support comprising:
- a front support body configured to support a turbine shaft;
- and
- a hollow front support insert fixed to the front support body and configured to support a first sprocket;
- and
- wherein the front support body, front support insert, and turbine shaft define four fluid passageways each fluidly connecting an intermediate member to a torque converter.
Dependencies are inferred from the claim text.