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Emission aftertreatment system and method applied to gasoline engine

A gasoline engine and treatment method technology, applied in exhaust treatment, engine components, combustion engines, etc., to achieve the effect of improving treatment capacity and reducing emission of pollutants

Inactive Publication Date: 2017-05-31
NINGBO GEELY ROYAL ENGINE COMPONENTS
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

For gasoline engines, especially direct-injection gasoline engines, particulate matter, which has never been considered before, will become the biggest challenge for the whole vehicle to meet emission regulations

Method used

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  • Emission aftertreatment system and method applied to gasoline engine
  • Emission aftertreatment system and method applied to gasoline engine

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Embodiment Construction

[0030] figure 1 It is a schematic layout diagram of an exhaust after-treatment system according to an embodiment of the present invention, such as figure 1 As shown, an exhaust aftertreatment system applied to a gasoline engine includes a three-way catalyst 1, a particle trap 2, an electric heating device 3, and a control module (not shown in the figure). The three-way catalyst 1 is installed behind the exhaust manifold in the engine compartment, and is used to convert harmful gases such as carbon monoxide, hydrocarbons, and nitrogen oxides discharged from automobile exhaust into harmless carbon dioxide, water and carbon dioxide through oxidation and reduction. Nitrogen. The carrier in the three-way catalytic converter 1 is a metal carrier. The particle trap 2 is installed at the outlet end of the three-way catalytic converter 1, and is used to convert the remaining harmful gas and capture the particulate matter in the automobile exhaust. The filter element of the particle tra...

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Abstract

The invention discloses an emission aftertreatment system and method applied to a gasoline engine and relates to the field of tail gas treatment. The emission aftertreatment system comprises a three-way catalysis device, a particle capturing device, an electric heating device and a control module. A carrier in the three-way catalysis device is a metal carrier and is arranged behind an exhaust manifold in an engine room. The particle capturing device is installed at the outlet end of the three-way catalysis device. A filter element of the particle capturing device is formed by ceramic, and the surface of the ceramic is coated with a precious metal catalyst. The electric heating device is fixed to the outer surface of the three-way catalysis device and is used for heating the three-way catalysis device. The control module is connected with an electric heating module and is used for controlling the electric heating device. The invention further provides a corresponding method. The emission aftertreatment system applied to the gasoline engine is adopted, by means of reasonable arrangement of the three-way catalysis device and the particle capturing device and reasonable control over the electric heating device, the treatment capacity of the emission aftertreatment system is improved, and the pollutant emission is reduced.

Description

Technical field [0001] The present invention relates to the field of exhaust gas treatment, in particular to an exhaust post-treatment system and a treatment method applied to gasoline engines. Background technique [0002] In order to cope with the increasingly serious environmental pollution, my country is about to introduce National VI vehicle emission regulations. Compared with the current National Five Standards, this regulation has made leap-forward improvements in both test conditions and various emission limits. The requirements for particulate matter have been increased for gasoline engines. For gasoline engines, especially direct-injection gasoline engines, particulate matter that has never been considered before will become the biggest challenge for the vehicle to meet emission regulations. In order to meet the requirements of emission regulations for particulate matter and other pollutants, new emission post-treatment technologies must be applied. Summary of the in...

Claims

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Application Information

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IPC IPC(8): F01N3/035F01N3/027F01N9/00
CPCF01N3/027F01N3/035F01N3/101F01N3/2013F01N3/2803F01N9/00F01N9/002F01N2570/10F01N2900/1406F01N2900/1404F01N2570/14F01N2570/12Y02T10/40
Inventor 张书恩陆经文杨林李连豹蒋恩杰韦虹李双清王瑞平
Owner NINGBO GEELY ROYAL ENGINE COMPONENTS
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