Output gearing for a dual motor mixed-speed continuous power transmission
AssigneeAllison Transmission, Inc.
InventorsArthur L. McGrew, Jr., Isaac Mock, George S. Pelton, James Allen Raszkowski
Life of this patent
Estimating the term…
Abstract
An electric powertrain includes a first electric motor that has an uninterrupted connection with a drive shaft of a vehicle. The electric powertrain further includes a second electric motor that has an interruptible connection with the drive shaft. In one form, this interruptible connection includes a clutch. The electric powertrain further includes a first gear train in the form of a first planetary gear and a second gear train in the form of a second planetary gear. The first gear train, second gear train, and clutch are arranged downstream from the first electric motor and second electric motor.
Claims15
A powertrain system, comprising:
- an output;
- a first electric motor connected to the output;
- a second electric motor connected to the output;
- a planetary gear;
- a clutch including a one-way clutch;
- wherein the second electric motor is configured to supply power to the output via the planetary gear and the clutch;
- wherein the planetary gear and the clutch are located downstream from the first electric motor and the second electric motor;
- and
- wherein no gearing is disposed between the first electric motor and the second electric motor.
A powertrain system, comprising:
- an output;
- a first electric motor connected to the output;
- a second electric motor connected to the output;
- a planetary gear;
- a clutch including a one-way clutch;
- wherein the second electric motor is configured to supply power to the output via the planetary gear and the clutch;
- wherein the planetary gear and the clutch are located downstream from the first electric motor and the second electric motor;
- a gear train connecting the second electric motor to the output;
- wherein the gear train includes the planetary gear;
- wherein the planetary gear includes a sun gear, a ring gear and one or more planet gears engaged between the sun gear and the ring gear;
- wherein the planetary gear has a carrier;
- wherein the ring gear surrounds the carrier;
- and
- a clutch actuator configured to engage and disengage the one-way clutch with the ring gear.
A powertrain system, comprising:
- an output;
- a first electric motor connected to the output;
- a second electric motor connected to the output;
- a planetary gear;
- a clutch including a one-way clutch;
- wherein the second electric motor is configured to supply power to the output via the planetary gear and the clutch;
- wherein the planetary gear and the clutch are located downstream from the first electric motor and the second electric motor;
- and
- wherein the one-way clutch includes a Selectable One-Way Clutch (SOWC).
A powertrain system, comprising:
- an output;
- a first electric motor connected to the output;
- a second electric motor connected to the output;
- a planetary gear;
- a clutch including a one-way clutch;
- wherein the second electric motor is configured to supply power to the output via the planetary gear and the clutch;
- wherein the planetary gear and the clutch are located downstream from the first electric motor and the second electric motor;
- wherein the planetary gear has a ring gear;
- wherein the planetary gear has a carrier;
- wherein the carrier has a clutch engagement member;
- wherein the ring gear surrounds the carrier;
- a clutch actuator configured to engage and disengage the one-way clutch with the ring gear;
- a range member coupled to the second electric motor;
- and
- a dog clutch configured to connect and disconnect the clutch engagement member and the range member.
Dependencies are inferred from the claim text.