Scavenging for particulate filter regeneration
AssigneeGM Global Technology Operations LLC
InventorsJ. Michael Gwidt, Daniel P. Himes
Life of this patent
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Abstract
In accordance with exemplary embodiments, methods and systems are provided for controlling particulate filter regeneration for a particulate filter of a drive system of a vehicle, including: obtaining sensor data pertaining to the drive system via one or more sensors of the vehicle; determining, via a processor of the vehicle, when particulate filter regeneration is warranted, using the sensor data; and providing particulate filter regeneration while performing scavenging with respect to the drive system, via instructions provided by the processor, when it is determined that particulate filter regeneration is warranted.
Claims17
A method for controlling particulate filter regeneration for a particulate filter of a drive system of a vehicle, the drive system having an intake valve and an exhaust valve, the method comprising:
- obtaining sensor data pertaining to the drive system via one or more sensors of the vehicle, including obtaining temperature sensor data as to an exhaust temperature of the drive system;
- determining, via a processor of the vehicle, when particulate filter regeneration is warranted, using the sensor data;
- and
- providing particulate filter regeneration while performing scavenging with respect to the drive system, via instructions provided by the processor, when it is determined that particulate filter regeneration is warranted, and wherein the scavenging is performed by simultaneous opening of both the intake valve and the exhaust valve for a varying predetermined amount of time that is sequentially increased over time during operation of the drive system provided that the exhaust temperature is less than a predetermined threshold, and wherein the scavenging continues without further sequential increases once the exhaust temperature is greater than the predetermined threshold and until the particulate filter regeneration is no longer warranted.
A system for controlling particulate filter regeneration for a particulate filter of a drive system of a vehicle, the drive system having an intake valve and an exhaust valve, the system comprising:
- one or more sensors configured to obtain sensor data pertaining to the drive system, including one or more temperature sensors configured to obtain temperature sensor data as to an exhaust temperature of the drive system;
- and
- a processor that is coupled to the one or more sensors and that is configured to at least facilitate:
- determining particulate filter regeneration is warranted, using the sensor data;
- and
- providing particulate filter regeneration while performing scavenging with respect to the drive system, via instructions provided by the processor, when it is determined that particulate filter regeneration is warranted, and wherein the scavenging is performed by simultaneous opening of both the intake valve and the exhaust valve for a varying predetermined amount of time that is sequentially increased over time during operation of the drive system provided that the exhaust temperature is less than a predetermined threshold, and wherein the scavenging continues without further sequential increases once the exhaust temperature is greater than the predetermined threshold and until the particulate filter regeneration is no longer warranted.
A vehicle comprising:
- a body;
- a drive system configured to generate movement of the body, the drive system including a particulate filter, the drive system having an intake valve and an exhaust valve;
- one or more sensors configured to obtain sensor data pertaining to the drive system, including one or more temperature sensors configured to obtain temperature sensor data as to an exhaust temperature of the drive system;
- and
- a processor that is coupled to the one or more sensors and that is configured to at least facilitate:
- determining particulate filter regeneration is warranted, using the sensor data;
- and
- providing particulate filter regeneration while performing scavenging with respect to the drive system, via instructions provided by the processor, when it is determined that particulate filter regeneration is warranted, and wherein the scavenging is performed by simultaneous opening of both the intake valve and the exhaust valve for a varying predetermined amount of time that is sequentially increased over time during operation of the drive system provided that the exhaust temperature is less than a predetermined threshold, and wherein the scavenging continues without further sequential increases once the exhaust temperature is greater than the predetermined threshold and until the particulate filter regeneration is no longer warranted.
Dependencies are inferred from the claim text.