METHOD AND SYSTEM FOR UTILIZATION OF REGENERATIVE BRAKING ELECTRICAL ENERGY FOR OPERATING AUXILIARY SYSTEM IN A VEHICLE
First Claim
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1. A method comprising:
- dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle;
powering at least one auxiliary system in the vehicle with the dynamic braking electricity;
to the extent the dynamic braking electricity is insufficient to power the at least one auxiliary system, and when dynamic braking electricity is unavailable, powering the at least one auxiliary system from an energy device in the vehicle; and
to the extent the dynamic braking electricity exceeds electrical power requirements of the at least one auxiliary system, dispersing the dynamic braking electricity in a dynamic braking resistive grid.
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Abstract
Electrical power from a dynamic braking process in a vehicle is used to power one or more auxiliary systems in the vehicle. The auxiliary systems may be a urea storage container heating unit, a particulate filter regeneration heating unit, a cabin heating system, and/or a battery heating unit. When dynamic braking electricity is unavailable, and to the extent the dynamic braking electricity is insufficient for powering the auxiliary system, electrical power from an energy device on board the vehicle is used to power the auxiliary system. The energy device may be an auxiliary energy storage device, devoted for use in powering the auxiliary system.
15 Citations
24 Claims
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1. A method comprising:
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dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle; powering at least one auxiliary system in the vehicle with the dynamic braking electricity; to the extent the dynamic braking electricity is insufficient to power the at least one auxiliary system, and when dynamic braking electricity is unavailable, powering the at least one auxiliary system from an energy device in the vehicle; and to the extent the dynamic braking electricity exceeds electrical power requirements of the at least one auxiliary system, dispersing the dynamic braking electricity in a dynamic braking resistive grid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A method comprising:
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dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle; powering a particulate filter regeneration heating unit in the vehicle with the dynamic braking electricity, wherein the vehicle includes a particulate filter disposed in fluid communication with an exhaust path of an engine of the vehicle, for filtering particulate matter from an exhaust gas flow of the engine, and wherein the particulate filter regeneration heating unit is powered to heat an exhaust gas flow passing from the engine into the particulate filter to a temperature sufficient to cause oxidation of particulates contained in the particulate filter; to the extent the dynamic braking electricity is insufficient to power the particulate filter regeneration heating unit, and when dynamic braking electricity is unavailable, powering the particulate filter regeneration heating unit from an energy device in the vehicle; and to the extent the dynamic braking electricity exceeds electrical power requirements of the particulate filter regeneration heating unit, dispersing the dynamic braking electricity in a dynamic braking resistive grid. - View Dependent Claims (14, 15, 16)
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17. A method comprising:
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dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle; and powering a urea storage container heating unit in the vehicle with the dynamic braking electricity;
wherein;the vehicle includes an engine emissions treatment system having a urea storage container that contains urea; the urea storage container heating unit is in thermal communication with a heat retaining material located proximate to the urea storage container; and the urea storage container heating unit is powered with the dynamic braking electricity to heat the heat retaining material. - View Dependent Claims (18)
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19. A method comprising:
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dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle; powering at least one auxiliary system in the vehicle with the dynamic braking electricity; to the extent the dynamic braking electricity is insufficient to power the at least one auxiliary system, and when dynamic braking electricity is unavailable, powering the at least one auxiliary system from an energy device in the vehicle; and to the extent the dynamic braking electricity exceeds electrical power requirements of the at least one auxiliary system, dispersing the dynamic braking electricity in a dynamic braking resistive grid; wherein the vehicle includes an engine emissions treatment system having a urea storage container that contains urea; the at least one auxiliary system comprises a urea storage container heating unit in thermal communication with a heat retaining material located proximate to the urea storage container; and the urea storage container heating unit is powered with the dynamic braking electricity to heat the heat retaining material. - View Dependent Claims (20)
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21. A method comprising:
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dynamically braking a vehicle so as to generate dynamic braking electricity using a traction motor of the vehicle; and dissipating at least a portion of the dynamic braking electricity as heat via a dynamic braking resistive grid of a cabin heating system, the cabin heating system including a heat retaining material in thermal contact with the dynamic braking resistive grid. - View Dependent Claims (22, 23, 24)
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Specification