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Method of regenerating a particulate filter for a motor vehicle

A particle filter, motor vehicle technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problem of long duration of regeneration method

Inactive Publication Date: 2014-02-19
PEZHO SITROEN AUTOMOBILS SA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In addition, due to the long duration of the regeneration method, the risk of failure due to engine shutdown is rather high

Method used

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  • Method of regenerating a particulate filter for a motor vehicle
  • Method of regenerating a particulate filter for a motor vehicle

Examples

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Embodiment Construction

[0018] A motor vehicle includes an internal combustion engine that is supplied with air by an intake duct and fuel by a fuel duct. The internal combustion engine also includes a vent line in communication with the internal combustion engine and allowing exhaust of gases produced by combustion of the fuel in the internal combustion engine.

[0019] The invention relates to a vehicle comprising: a particulate filter in the exhaust line adapted to filter particles in the exhaust gas; and a filter adapted to allow catalytic oxidation of unburnt substances in the exhaust gas Oxidation Catalytic Device. In this embodiment, the exhaust line also includes a reduction catalytic device, downstream of the oxidation catalytic device, adapted to allow catalytic reduction of nitrogen oxides in the exhaust gas.

[0020] Typically, as the vehicle is used, the particulate filter becomes filled with soot, and to regenerate the particulate filter, the vehicle includes an electronic system that ...

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Abstract

The invention relates to a method of regenerating a particulate filter for a motor vehicle comprising a combustion engine, said method comprising a regeneration stage which is controlled using a target regeneration temperature. According to the invention, the method comprises a previous overheating stage, which is controlled using a target overheating temperature higher than the target regeneration temperature.

Description

[0001] This application claims priority from French application 1154967, filed June 7, 2011, the content of which (text, drawings and claims) is incorporated herein by reference. technical field [0002] The invention relates to a regeneration method for a particle filter of a motor vehicle comprising an internal combustion engine. Background technique [0003] Typically, the particulate filter is filled with soot as the vehicle is used, and in order to regenerate the particulate filter, the vehicle includes an electronic system that allows the filter to be regenerated by controlling the combustion of soot. Combustion of this soot takes place at high temperatures generated by an increase in the temperature at the outlet of the internal combustion engine, supplemented if necessary by the afterburning of the fuel that takes place in the oxidation catalyst. [0004] In order not to damage the components of the exhaust line downstream of the post-combustion, the electronic syste...

Claims

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Application Information

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IPC IPC(8): F01N9/00F01N3/035
CPCF01N3/035Y02T10/47F01N9/002Y02T10/40
Inventor C·科利尼翁S·富尔F·雷耶
Owner PEZHO SITROEN AUTOMOBILS SA
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