Dual motor electric driveline
AssigneeDana Italia S.R.L.
InventorsLorenzo Serrao, Filip Van Raepenbusch
Life of this patent
Estimating the term…
Abstract
Methods and sysemteds for a driveline, comprising: a transmission having an input and an output, a power take-off (PTO), a first electric motor drivingly engaged or selectively drivingly engaged with the input of the transmission, a second electric motor, a first clutching device, and a second clutching device, wherein the second electric motor is selectively drivingly engaged with the input of the transmission through the first clutching device, and wherein the second electric motor is selectively drivingly engaged with the PTO through the second clutching device. The present document further relates to a vehicle including said dual motor electric driveline, and to a method of controlling said dual motor electric driveline.
Claims18
A method comprising:
- when a requested power or a requested torque is greater than a respective threshold, operating a driveline in a first mode, the first mode comprising engaging a first electric motor and a second electric motor to an input of a transmission;
- and
- when the requested power or the requested torque is less than the respective threshold, operating the driveline in a second mode, the second mode comprising engaging the first electric motor to the input of the transmission and engaging the second electric motor to an input of a power take-off (PTO);
- wherein the first electric motor and the second electric motor are connected to a coupling device, and the coupling device is connected to the input of the PTO and the input of the transmission, and
- wherein the coupling device comprises:
- a first reduction ratio between the first electric motor and the transmission, and a second reduction ratio between the second electric motor and the transmission;
- and
- the transmission comprises a first gear ratio and a second gear ratio.
A method comprising:
- operating a driveline in a first mode when a requested power or a requested torque is greater than a respective threshold, the first mode comprising engaging a first electric motor and a second electric motor to an input of a transmission via one or more clutches;
- and
- operating the driveline in a second mode when the requested power or the requested torque is less than the respective threshold, the second mode comprising engaging the first electric motor to the input of the transmission and engaging the second electric motor to an input of a power take-off (PTO) via the one or more clutches,
- wherein the first electric motor and the second electric motor are connected to a coupling device, and the coupling device is connected to the input of the PTO and the input of the transmission, and
- wherein the coupling device comprises:
- a first reduction ratio between the first electric motor and the transmission, and a second reduction ratio between the second electric motor and the transmission;
- and
- the transmission comprises a first gear ratio and a second gear ratio.
A system comprising:
- a first electric motor and a second electric motor connected to a coupling device;
- the coupling device connected to a power take-off (PTO) and a transmission, the coupling device comprising one or more clutches;
- and
- an electronic control unit (ECU) with instructions stored in memory to:
- change a state of the one or more clutches to engage the first electric motor and the second electric motor to an input of the transmission when a requested motor input is greater than a respective threshold, and
- change the state of the one or more clutches to engage the first electric motor to the input of the transmission and engage the second electric motor to an input of the PTO when the requested motor input is less than the respective threshold,
- wherein the first electric motor and the second electric motor are connected to a coupling device, and the coupling device is connected to the input of the PTO and the input of the transmission, and
- wherein the coupling device comprises:
- a first reduction ratio between the first electric motor and the transmission, and a second reduction ratio between the second electric motor and the transmission;
- and
- the transmission comprises a first gear ratio and a second gear ratio.
Dependencies are inferred from the claim text.