System and method of DPF passive enhancement through powertrain torque-speed management
First Claim
1. A method to enhance the passive regeneration of a diesel particulate filter performed by an engine system having a processor and non-transitory computer-readable storage medium, the method comprising:
- receiving, by the processor, current operating data indicative of a vehicle current operating state based on at least two of power demand, engine speed, engine torque, gear number, and vehicle speed;
receiving, by the processor, terrain data indicative of terrain variation;
determining, by the processor, a vehicle target operating state based on engine exhaust particulate matter and engine transients; and
controlling, by the processor, engine speed and transmission gear selection based on the vehicle target operating state so as to reduce at least one of the engine exhaust particulate matter and the engine transients.
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Accused Products
Abstract
This disclosure provides a method and system for determining recommendations for vehicle operation that reduce soot production in view of a diesel particulate filter (DPF) of an exhaust aftertreatment system. Recommendations generated can reduce excessive particulate matter (PM) production during transient engine events and provide for operating conditions favorable for passive regeneration. In this way, less frequent active regeneration of the DPF is needed and/or more opportunities are provided for passive regeneration. The system and method can utilize location and terrain information to anticipate and project a window of operation in view of reducing soot production and soot loading of the DPF, or provide the operator with instruction when such opportunities are present or will soon be encountered.
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Citations
30 Claims
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1. A method to enhance the passive regeneration of a diesel particulate filter performed by an engine system having a processor and non-transitory computer-readable storage medium, the method comprising:
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receiving, by the processor, current operating data indicative of a vehicle current operating state based on at least two of power demand, engine speed, engine torque, gear number, and vehicle speed; receiving, by the processor, terrain data indicative of terrain variation; determining, by the processor, a vehicle target operating state based on engine exhaust particulate matter and engine transients; and controlling, by the processor, engine speed and transmission gear selection based on the vehicle target operating state so as to reduce at least one of the engine exhaust particulate matter and the engine transients. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system adapted to enhance the passive regeneration. of a diesel particulate filter, comprising:
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an engine system; and a controller operatively coupled to the engine system, the controller having a processor and non-transitory computer-readable storage medium, the controller including; a current operating state circuit including current operating state data indicative of a vehicle current operating state based on at least two of power demand, engine speed, engine torque, gear number, and vehicle speed; a terrain variation circuit including terrain data indicative of terrain variation; a target operating state circuit structured to determine a vehicle target operating state based on engine exhaust particulate matter and engine transients; and an engine control circuit structured to control engine speed based on the determined vehicle target operating state so as to reduce the engine exhaust particulate matter and the engine transients. - View Dependent Claims (9, 10, 11)
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12. A method to enhance the passive regeneration of a diesel particulate filter performed by an engine system having a processor and non-transitory computer-readable storage medium, the method comprising:
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receiving, by the processor, current operating data indicative of a vehicle current operating state; determining, by the processor, a vehicle target operating state based on the vehicle current operating state so as to minimize fuel consumption by each of the engine system and active regeneration anticipated to be required by operation in the vehicle target operating state; and providing, by the processor, an engine speed and transmission gear shift recommendation based on the vehicle target operating state. - View Dependent Claims (13, 14, 15, 16)
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17. A system adapted to enhance the passive regeneration of a diesel particulate filter, comprising:
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an engine system; and a controller operatively coupled to the engine system, the controller having a processor and non-transitory a computer-readable storage medium, the controller including; a current operating state circuit including current operating state data indicative of a vehicle current operating state; a target operating state circuit structured to determine a vehicle target operating state so as to minimize fuel consumption by each of the engine system and active regeneration anticipated to be required by operation in the vehicle target operating state; and a recommendation circuit structured to provide engine speed and transmission gear shift recommendations based on the vehicle target operating state. - View Dependent Claims (18, 19, 20, 21)
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22. A method to enhance the passive regeneration of a diesel particulate filter performed by an engine system having a processor and non-transitory computer-readable storage medium, the method comprising:
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receiving, by the processor, current operating data indicative of a vehicle current operating state; determining, by the processor, a vehicle target operating state based on the vehicle current operating state so as to minimize fuel consumption by each of the engine system and active regeneration anticipated to be required by operation in the vehicle target operating state; and controlling, by the processor, engine speed and transmission gear selection based on the vehicle target operating state, wherein the current operating data further includes terrain data indicative of vehicle terrain. - View Dependent Claims (23, 24, 25)
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26. ently Amended) A system adapted to enhance the passive regeneration of a diesel particulate filter, comprising:
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an engine system; and a controller operatively coupled to the engine system, the controller having a processor and non-transitory a computer-readable storage medium, the controller including; a current operating state circuit including current operating state data indicative of a vehicle current operating state; a target operating state circuit structured to determine a vehicle target operating state so as to minimize fuel consumption by each of the engine system and active regeneration anticipated to be required by operation in the vehicle target operating state; an engine control circuit structured to control engine speed based on the vehicle target operating state, and a terrain variation circuit including terrain data indicative of terrain variation, wherein the vehicle current operating state is based at least in part on the terrain data. - View Dependent Claims (27, 28, 29, 30)
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Specification