Multi-motor/multi-range torque transmitting power system
First Claim
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1. A torque transmitting power system comprising:
- a rotatable output shaft;
a first motor operably coupled to the output shaft via a first transmission that has at least one range;
a second motor operably coupled to the output shaft via a second transmission that has at least two ranges; and
a power supply subsystem including an engine with an output operably coupled to an input of an energy conversion device, which is operably coupled to an input of the first motor and an input of the second motor.
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Abstract
torque transmitting power system includes first and second motors operably coupled to an output shaft via respective first and second transmissions. At least one of the two transmissions has at least two ranges. A power supply subsystem includes an engine with an output operably coupled to an input of an energy conversion device, which is operably coupled to an input of the first motor and an input of the second motor. The system allows for speed shifts that can be accomplished in a way that maintains rimpull during the shift event for smoother accelerations.
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Citations
16 Claims
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1. A torque transmitting power system comprising:
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a rotatable output shaft;
a first motor operably coupled to the output shaft via a first transmission that has at least one range;
a second motor operably coupled to the output shaft via a second transmission that has at least two ranges; and
a power supply subsystem including an engine with an output operably coupled to an input of an energy conversion device, which is operably coupled to an input of the first motor and an input of the second motor. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of operating a torque transmitting power system, comprising the steps of:
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simultaneously engaging first and second motors to an output shaft via first and second transmissions, respectively;
shifting at least in part by sequentially disengaging one, but not both, of the first and second motors from the output shaft via one of the first and second transmissions, respectively;
changing the range of the transmission associated with the disengaged motor; and
re-engaging the one of the first and second motors with the output shaft via the one of the first and second transmissions, respectively. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16)
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Specification