Particulate filter regeneration method and system for extended range vehicle

Abstract

The invention provides a particulate filter regeneration method and system for an extended range vehicle, and relates to the technical field of vehicle control. The particulate filter regeneration method comprises the following steps: collecting the carbon loading capacity of a particulate filter; judging whether the particulate filter has a regeneration requirement or not according to the carbonloading capacity; if yes, judging whether the state of the extended range vehicle meets a preset condition or not; and if the preset condition is met, stopping supplying fuel oil to an engine, and controlling a generator to drive the engine to work, so that the engine conveys oxygen to the particulate filter, and the particle catcher is regenerated. The particulate filter regeneration method can be used for the extended range vehicle and is high in regeneration efficiency.

Description

technical field [0001] The invention relates to the technical field of vehicle control, in particular to a method and system for regenerating a particle trap for an extended-range vehicle. Background technique [0002] In a range-extended electric vehicle, the range extender is used to provide energy for the drive motor and the power battery, and belongs to the energy provider in the vehicle architecture. The power, and then the power follows the controller to control the working point of the engine. [0003] In order to meet the national 6b emission standards, a particle filter is added to the vehicle. As the vehicle runs for a long time, the carbon load in the particle filter will increase, resulting in a decline in engine performance and even affecting the normal operation of the engine. Work. At present, most of the regeneration control methods of the particle filter in the prior art are fuel-cut oxygen-enriched combustion methods on vehicles directly driven by the eng...

AI Technical Summary

Problems solved by technology

[0003] In order to meet the national 6b emission standards, a particle filter is added to the vehicle. As the vehicle runs for a long time, the carbon load in the particle filter will increase, resulting in a decline in engine performance and even affecting the normal operation of the engine. Work

At present, most of the regeneration control methods of particulate traps in the prior art are fuel-cut oxygen-enriched combustion methods on vehicles directly driven by the engine, but this method cannot be directly applied to range-extended vehicles

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