SYSTEM AND METHOD FOR RECOVERING REGENERATIVE POWER IN A VEHICLE, AND VEHICLE USING THE SAME
First Claim
1. A system for recovering regenerative power in a vehicle, the system comprising:
- a first set of vehicle wheels;
a second set of vehicle wheels;
one or more controllers;
an electric machine that performs as a motor in a first mode of operation and performs as a generator in a second mode of operation;
a regenerative power source electrically coupled to the electric machine, the regenerative power source configured to supply power to the electric machine when the electric machine is in the first mode of operation and to receive power from the electric machine when the electric machine is in the second mode of operation; and
a driveline coupled to the electric machine and the first set of vehicle wheels for transferring torque between the electric machine and the first set of vehicle wheels, the driveline including a controllable coupling apparatus in electronic communication with the one or more controllers for selectively coupling, during vehicle deceleration, the electric machine to the second set of vehicle wheels in response to a signal from the one or more controllers.
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Accused Products
Abstract
A system, method and vehicle using the same for increasing regenerative power recovered during vehicle deceleration. The system includes first and second sets of vehicle wheels, a controller, an electric machine, a regenerative power source, and a driveline. The electric machine performs as a motor/generator in a first/second mode of operation, respectively. The regenerative power source is electrically coupled to the electric machine and is configured to supply/receive power to/from the electric machine when the electric machine is in the first/second mode of operation, respectively. The driveline is coupled to the electric machine and the first set of vehicle wheels for transferring torque. The driveline includes a controllable coupling apparatus in electronic communication with the controller for selectively coupling, during vehicle deceleration, the electric machine to the second set of vehicle wheels.
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Citations
20 Claims
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1. A system for recovering regenerative power in a vehicle, the system comprising:
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a first set of vehicle wheels; a second set of vehicle wheels; one or more controllers; an electric machine that performs as a motor in a first mode of operation and performs as a generator in a second mode of operation; a regenerative power source electrically coupled to the electric machine, the regenerative power source configured to supply power to the electric machine when the electric machine is in the first mode of operation and to receive power from the electric machine when the electric machine is in the second mode of operation; and a driveline coupled to the electric machine and the first set of vehicle wheels for transferring torque between the electric machine and the first set of vehicle wheels, the driveline including a controllable coupling apparatus in electronic communication with the one or more controllers for selectively coupling, during vehicle deceleration, the electric machine to the second set of vehicle wheels in response to a signal from the one or more controllers. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for recovering regenerative power in a vehicle when the vehicle is operating in a regenerative mode, the vehicle comprising a first set of vehicle wheels, a second set of vehicle wheels, one or more controllers, an electric machine coupled to the first set of vehicle wheels via a driveline, and a regenerative power source electronically coupled to the electric machine, the method comprising:
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receiving a set of vehicle inputs; receiving a set of torque constraint inputs; determining, based at least in part on one or more members of the set of vehicle inputs, a target regenerative torque corresponding to the second set of vehicle wheels when the vehicle is operating in the regenerative mode; limiting, based at least in part on one or more members of the set of torque constraint inputs, the target regenerative torque to generate a desired regenerative torque corresponding to the second set of vehicle wheels; and outputting a signal corresponding to the desired regenerative torque to an actuator of a controllable coupling apparatus to controllably couple the second set of vehicle wheels to the electric machine such that regenerative power from the second set of vehicle wheels is recovered by the regenerative power source. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A rear wheel drive hybrid electric vehicle comprising:
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a rear set of vehicle wheels; a front set of vehicle wheels; one or more controllers; an electric machine that performs as a motor in a first mode of operation and performs as a generator in a second mode of operation; a regenerative power source electrically coupled to the electric machine, the regenerative power source configured to supply power to the electric machine when the electric machine is in the first mode of operation and to receive power from the electric machine when the electric machine is in the second mode of operation; and a driveline coupled to the electric machine and the rear set of vehicle wheels for transferring torque between the electric machine and the rear set of vehicle wheels, the driveline including a transfer case in electronic communication with the one or more controllers for selectively coupling, during vehicle deceleration, the electric machine to the front set of vehicle wheels in response to a signal from the one or more controllers. - View Dependent Claims (20)
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Specification