Hybrid power system braking control
First Claim
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1. A method, comprising:
- receiving a deceleration input;
in response to receiving the deceleration input, determining a target negative torque trajectory;
activating a regenerative braking device and an electrical energy dissipation device in response to determining the target negative torque trajectory; and
decelerating by decreasing an efficiency of the regenerative braking device to generate electrical energy and dissipating at least a portion of the generated electrical energy from the regenerative braking device as heat energy through the electrical energy dissipation device to achieve the target negative torque trajectory.
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Abstract
A method, apparatus, and system are disclosed for hybrid power system braking. In one embodiment, a deceleration input is received. In response to receiving the deceleration input, a target negative torque trajectory is determined. To achieve the target negative torque trajectory, a regenerative braking device and an electrical energy dissipation device are activated.
74 Citations
27 Claims
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1. A method, comprising:
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receiving a deceleration input; in response to receiving the deceleration input, determining a target negative torque trajectory; activating a regenerative braking device and an electrical energy dissipation device in response to determining the target negative torque trajectory; and decelerating by decreasing an efficiency of the regenerative braking device to generate electrical energy and dissipating at least a portion of the generated electrical energy from the regenerative braking device as heat energy through the electrical energy dissipation device to achieve the target negative torque trajectory. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method, comprising:
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operating a vehicle having a drive system, the vehicle performing intermittent deceleration; receiving a deceleration input; in response to the deceleration input, determining a target negative torque trajectory; achieving the target negative torque trajectory by converting a portion of mechanical energy of the drive system into electrical energy; and wherein achieving the target negative torque trajectory includes storing a first portion of the electrical energy into an electrical storage device while dissipating a second portion of the electrical energy into heat energy. - View Dependent Claims (11, 12, 13, 14, 15, 16)
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17. An apparatus, comprising:
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a controller structured to receive a deceleration input, the controller including; a negative torque trajectory module structured to determine a target negative torque trajectory in response to the deceleration input; and a regeneration command module structured to command a regenerative braking device and an energy dissipation device to achieve the target negative torque trajectory by decreasing an efficiency of the regenerative braking device to generate electrical energy and dissipating at least a portion of the generated electrical energy from the regenerative braking device as heat energy through the electrical energy dissipation device. - View Dependent Claims (18, 19, 20)
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21. A system, comprising:
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a powertrain including an internal combustion engine, an energy dissipation device, and a generator; a controller in communication the engine, the energy dissipation device, and the generator, the controller further comprising; a deceleration request input module structured to receive a deceleration request; a negative torque trajectory module structured to determine a target negative torque trajectory in response to the deceleration request; and a regeneration module structured to provide a generator command and an electrical energy dissipation command to achieve the negative torque trajectory; and wherein the generator is responsive to the generator command to generate electrical energy to decelerate the power train and the electrical energy dissipation device is responsive to the electrical energy dissipation command to dissipate at least a portion of the generated electrical energy as heat energy. - View Dependent Claims (22, 23, 24, 25, 26, 27)
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Specification