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Patent Searching and Data


Title:
METHOD FOR CLEANING AN EXHAUST SYSTEM OF AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO/2018/127638
Kind Code:
A3
Abstract:
The invention relates to a method for cleaning a solid urea deposit from an exhaust system (1) of an internal combustion engine (2), said exhaust system (1) being provided with a particulate filter (52) and a selective catalytic reduction system (5) comprising an injector (6) for injecting a urea-based decontamination liquid. In order to remove the solid urea deposit, the method comprises a step of activating a phase in which the exhaust system (1) is cleaned by increasing the temperature in the system (1) caused by a phase comprising the partial regeneration of the particulate filter, said cleaning phase being activated before the soot mass in the filter (52) has reached a threshold for the activation of the regeneration of the filter (52).

Inventors:
LAIGLE, Emmanuel (4 ALLEE BOTTICELLI, COURBEVOIE, 92400, FR)
DUMONT, Jerome (3 AVENUE DU 11 NOVEMBRE, ANTONY, 92160, FR)
DJELLAL, Mahe (104 AVENUE DE L'ARCHE, COURBEVOIE, 92400, FR)
Application Number:
FR2017/053603
Publication Date:
August 30, 2018
Filing Date:
December 15, 2017
Export Citation:
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Assignee:
PSA AUTOMOBILES SA (2-10 Boulevard de l'Europe, Poissy, 78300, FR)
International Classes:
F02D41/02; F01N3/20; F01N11/00; F02D41/14
Foreign References:
US20110167805A12011-07-14
US20150059317A12015-03-05
US20100122525A12010-05-20
US20110146240A12011-06-23
EP2853707A12015-04-01
Attorney, Agent or Firm:
FERNANDEZ, Francis (PSA AUTOMOBILES SA, Propriété Industrielle18 rue des Fauvelles, La Garenne Colombes, 92250, FR)
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