Method and system for regenerating particulate filter

a technology of particulate filter and regenerative system, which is applied in the direction of machine/engine, separation process, electric control of exhaust gas treatment, etc., can solve the problem of difficult expansion of heat contained in exhaust gas at optional times, achieve effective burning of matter trapped, increase the amount of oxygen, and increase the flow rate of compressed air
US20110146274A1Inactive Publication Date: 2011-06-23IHI CORP
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Patent Information

Authority / Receiving Office
US · United States
Patent Type
Applications(United States)
Current Assignee / Owner
IHI CORP
Publication Date
2011-06-23
Estimated Expiration
Not applicable · inactive patent

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Abstract

A particulate filter regeneration system regenerates a particulate filter provided in an exhaust line of an engine equipped with a turbocharger by burning matter trapped on the particulate filter by raising the temperature of exhaust gas at times that the particulate filter requires regeneration. The system has an electric motor functioning as an intake quantity regeneration portion capable of increasing the flow rate of compressed air without depending on the flow rate of exhaust gas flowing across a turbine of the turbocharger, a bypass line connecting an engine intake line upstream of the engine to a section of the exhaust line upstream of the particulate filter, a flow rate regulation valve regulating the flow rate in the bypass line, and a control portion controlling the electric motor and the flow rate regulator.
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Description

TECHNICAL FIELD

[0001] This invention relates to a method and system for regenerating a particulate filter provided to remove particulate matter from exhaust gas, specifically a method and system for regenerating a particulate filter by burning matter trapped on the particulate filter.BACKGROUND ART

[0002] Most of automobiles using an internal combustion engine, such as a diesel engine or the like, are equipped with a particulate filter designed to clean up exhaust gas by trapping PM (particulate matter) in the exhaust gas. Particulate filters used in diesel engine automobiles are called DPFs, in particular. Since PM accumulated to a certain level clogs such DPFs, the DPFs are regenerated by burning PM by raising the temperature of exhaust gas (see Patent Document 1, for example).

[0003] As mentioned above, in order to regenerate particulate filters such as DPFs, raising the exhaust gas temperature, namely increasing heat contained in the exhaust gas by supplying fuel to the engine is req...

Claims

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