Control method and system for vehicle particulate filter

Abstract

The invention provides a control method and system of a vehicle particle trap. The control method comprises the following steps that when a vehicle is ready to run, position information of a startingpoint and a destination is input to a map server through a domain controller, and map information in front of the vehicle is calculated through the map server according to the position information ofthe starting point and the destination; the map information in front of the vehicle is obtained from the map server through the domain controller, and combined with vehicle sensor information, trafficinformation between the starting point and the destination is generated; state information of a hybrid power system is sent to the domain controller through a whole vehicle controller; the traffic information between the starting point and the destination and the state information of the hybrid power system are combined through the domain controller to obtain a PM / PN prediction emission curve between the starting point and the destination;an active regeneration and passive regeneration allocation strategy of the particle trap is calculated and obtained through the domain controller accordingto the PM / PN prediction emission curve between the starting point and the destination; and the active regeneration and passive regeneration allocation strategy of the particle trap is sent to the whole vehicle controller through the domain controller.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a control method and system for a vehicle particle trap. Background technique [0002] Gasoline engine particulate filter (GPF) is a particulate matter trapping device for gasoline engines. Its basic principle is to capture the particulate matter in the exhaust gas when the exhaust gas passes through a labyrinth carrier. The trapping efficiency can reach 60-90%, so the GPF can be improved The robustness of particulate matter emissions, while the GPF is coated, has a certain ability to convert gaseous emissions, which can reduce gas emissions. [0003] figure 1 It is a structural diagram of an engine and an aftertreatment system of a conventional gasoline vehicle, and the system includes an engine 53, an engine controller 42 (EMS), a three-way catalytic converter 101 (TWC), and a particulate filter 102 (GPF). Among them, TWC can convert the gaseous harmful emissions prod...

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a control method and system for vehicle particulate traps to solve the problem of unreasonable regeneration of existing vehicle particulate traps

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