System and method of DPF passive enhancement through powertrain torque-speed management

摘要

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.

主权项

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.