HYBRID BRAKING SYSTEM
First Claim
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1. A wheeled vehicle having at least one non-drive axle and a braking system comprising:
- a foundation brake mechanism operably connected to wheels on a non-drive axle;
a hybrid brake mechanism including an energy recovery machine selectively actuable for connection to the non-drive axle in a braking mode for being driven by the non-drive axle to generate energy, and in a drive mode for transferring energy to the non-drive axle;
an energy storage device for storing energy received from the energy recovery machine when the energy recovery machine is being operated in its braking mode, and for returning stored energy to the energy recovery machine to operate the energy recovery machine in its drive mode; and
a controller operably connected to the hybrid brake mechanism for actuating the energy recovery machine selectively in its braking mode to receive energy from the non-drive axle, and in its drive mode for transferring energy to the non-drive axle only when the vehicle is in motion.
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Abstract
A hybrid braking system that operates in conjunction with a foundation braking system, whether an air, hydraulic, electric, mechanical or electric braking system. Recovered energy is returned to the axle wheels in a controlled manner while the vehicle is in motion and certain criteria are met so as to compensate for aerodynamic drag and rolling resistance for instance but not at a rate to accelerate or launch a vehicle.
23 Citations
14 Claims
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1. A wheeled vehicle having at least one non-drive axle and a braking system comprising:
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a foundation brake mechanism operably connected to wheels on a non-drive axle; a hybrid brake mechanism including an energy recovery machine selectively actuable for connection to the non-drive axle in a braking mode for being driven by the non-drive axle to generate energy, and in a drive mode for transferring energy to the non-drive axle; an energy storage device for storing energy received from the energy recovery machine when the energy recovery machine is being operated in its braking mode, and for returning stored energy to the energy recovery machine to operate the energy recovery machine in its drive mode; and a controller operably connected to the hybrid brake mechanism for actuating the energy recovery machine selectively in its braking mode to receive energy from the non-drive axle, and in its drive mode for transferring energy to the non-drive axle only when the vehicle is in motion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of braking a wheeled vehicle having at least one non-drive axle, comprising the steps of:
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A. connecting the non-drive axle to an energy recovery machine, wherein rotation of the non-drive axle operates the energy recovery machine in a braking mode for generating energy; B. selectively supplementing the braking force of the energy recovery machine with an air brake force; C. delivering the energy generated by the energy recovery machine in step A to an energy storage device; D. subsequent to step C, returning the energy stored in step A to the energy recovery machine for causing the energy recovery machine to drive the non-driven axle only when the vehicle is in motion. - View Dependent Claims (11, 12, 13, 14)
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Specification