Method and control system for controlling propulsion in a hybrid vehicle
DC
First Claim
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1. A method for controlling a propulsion system in a hybrid vehicle including a traction motor and an internal combustion engine, the method comprising:
- sensing a signal indicative of vehicle torque demand;
selecting a threshold torque range indicative of conditions of relatively low vehicle torque demand;
processing the signal indicative of vehicle torque demand to determine whether the vehicle torque demand is within the threshold torque range;
during conditions when the signal indicative of vehicle torque demand is within the threshold torque range, generating a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the internal combustion engine from propelling the vehicle; and
during conditions when the signal indicative of vehicle torque demand is outside the threshold torque range, generating a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the internal combustion engine to propel the vehicle.
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5 Petitions
Reexamination
Accused Products
Abstract
Method and control system for controlling propulsion equipment in a hybrid vehicle including a traction motor and a propulsion unit, such as an internal combustion engine or a fuel cell, are provided. In one implementation, the control system includes a sensor coupled to sense a signal indicative of vehicle torque demand. The control system further includes memory for storing a threshold torque range indicative of conditions of relatively low vehicle torque demand. A processor is configured to process the signal indicative of vehicle torque demand to determine whether the vehicle torque demand is within the threshold torque range. During conditions when the signal indicative of vehicle torque demand is within the threshold torque range, an actuator is configured to generate a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the internal combustion engine from propelling the vehicle. During conditions when the signal indicative of vehicle torque demand is outside the threshold torque range, the actuator is configured to generate a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the internal combustion engine to propel the vehicle.
35 Citations
17 Claims
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1. A method for controlling a propulsion system in a hybrid vehicle including a traction motor and an internal combustion engine, the method comprising:
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sensing a signal indicative of vehicle torque demand;
selecting a threshold torque range indicative of conditions of relatively low vehicle torque demand;
processing the signal indicative of vehicle torque demand to determine whether the vehicle torque demand is within the threshold torque range;
during conditions when the signal indicative of vehicle torque demand is within the threshold torque range, generating a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the internal combustion engine from propelling the vehicle; and
during conditions when the signal indicative of vehicle torque demand is outside the threshold torque range, generating a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the internal combustion engine to propel the vehicle. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A control system for controlling propulsion equipment in a hybrid vehicle including a traction motor and an internal combustion engine, the control system comprising:
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a sensor coupled to sense a signal indicative of vehicle torque demand;
memory for storing a threshold torque range indicative of conditions of relatively low vehicle torque demand;
a processor configured to process the signal indicative of vehicle torque demand to determine whether the vehicle torque demand is within the threshold torque range;
during conditions when the signal indicative of vehicle torque demand is within the threshold torque range, an actuator configured to generate a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the internal combustion engine from propelling the vehicle; and
during conditions when the signal indicative of vehicle torque demand is outside the threshold torque range, the actuator configured to generate a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the internal combustion engine to propel the vehicle. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A method for controlling a propulsion system in a hybrid vehicle including a traction motor and a propulsion unit, the method comprising:
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mapping respective regions of relatively high and low efficiency in an efficiency map for the propulsion unit;
sensing a signal indicative of said regions of relatively high and low efficiency;
during conditions when the sensed signal indicates a region of low-efficiency for the propulsion unit, generating a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the propulsion unit from propelling the vehicle; and
during conditions when the sensed signal indicates a region of high-efficiency for the propulsion unit, generating a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the propulsion unit to propel the vehicle. - View Dependent Claims (16)
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17. A computer-readable medium including computer-readable code for causing a computer to control a propulsion system in a hybrid vehicle including a traction motor and a propulsion unit, the computer-readable medium comprising:
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segment code for mapping respective regions of relatively high and low efficiency in an efficiency map for the propulsion unit;
segment code for sensing a signal indicative of said regions of relatively high and low efficiency;
during conditions when the sensed signal indicates a region of low-efficiency for the propulsion unit, segment code for generating a signal configured to activate the electric traction motor to drivingly propel the vehicle while de-engaging the propulsion unit from propelling the vehicle; and
during conditions when the sensed signal indicates a region of high-efficiency for the propulsion unit, segment code for generating a signal configured to deactivate the electric traction motor from drivingly propelling the vehicle while re-engaging the propulsion unit to propel the vehicle.
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Litigation Data
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Current AssigneeSignal IP, Inc. (Marathon Patent Group, Inc.)
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Original AssigneeDelphi Technologies, Inc. (Aptiv PLC)
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InventorsMacBain, John A.
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Primary Examiner(s)ARTHUR JEANGLAUDE, GERTRUDE
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Application NumberUS10/214,048Publication NumberTime in Patent Office735 DaysField of Search701/22, 180/65.1, 180/65.2, 180/65.3, 180/65.4, 180/65.8, 180/69.6US Class Current701/22CPC Class CodesB60K 6/48 Parallel typeB60L 2240/662 TemperatureB60W 10/02 including control of drivel...B60W 10/06 including control of combus...B60W 10/08 including control of electr...B60W 20/00 Control systems specially a...B60W 2510/083 TorqueB60W 2510/244 Charge stateB60W 2540/10 Accelerator pedal positionB60W 2555/20 Ambient conditions, e.g. wi...B60W 2710/083 TorqueY02T 10/62 Hybrid vehiclesY02T 10/72 Electric energy management ...Y02T 90/16 Information or communicatio...
