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Engine sof control system fault detection method and fault detection equipment

A fault detection and control system technology, applied in mechanical equipment, engine components, combustion engines, etc., can solve problems such as SCR emission exceeding the standard fault

Active Publication Date: 2021-10-29
WEICHAI POWER CO LTD
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Problems solved by technology

[0002] Due to the low operating temperature of national V and national VI light-duty vehicles, SOF cannot be degraded in the DPF (diesel particulate filter) particulate filter, and has been accumulated on the surface of the SCR (Selective Catalytic Reduction) selective catalytic reduction agent. For a long time, it cannot Completion of the SOF removal system will cause the SCR to report an emission exceeding the standard fault

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  • Engine sof control system fault detection method and fault detection equipment
  • Engine sof control system fault detection method and fault detection equipment
  • Engine sof control system fault detection method and fault detection equipment

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Embodiment Construction

[0067] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0068] The oxidation catalytic technology of particles (Diesel Oxidation Catalysis, DOC) is to coat noble metal catalysts (such as Pt, etc.) The substance can undergo oxidation reaction with oxygen in the exhaust gas at a lower temperature and finally convert into CO 2 and H 2 O. Oxidation catalytic converter does not need regeneration system and control device, has the characteristics of simple structure and good reliability, and has been applied in modern ...

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Abstract

The invention relates to the field of automobiles, and discloses a fault detection method of an engine SOF control system and fault detection equipment. The fault detection method of the engine SOF control system includes: during the SOF processing process of the particulate matter catcher, the particulate matter catcher is in the working state to obtain exhaust Gas temperature; get the preset temperature threshold according to the engine operating parameters, and judge whether the exhaust gas temperature and temperature threshold meet the SOF heating condition within the set time; when the heating condition is met, the SOF is heated; when the heating condition is not met conditions, stop the SOF for heating, and record the number of times to stop heating the SOF; obtain the operating parameters for post-heating of the SOF; After regeneration, the parking regeneration operation is triggered; it is used to improve the particulate matter filter to activate the parking regeneration to remove SOF and improve the accuracy of judgment.

Description

technical field [0001] The invention relates to the technical field of automobiles, in particular to a fault detection method and fault detection equipment of an engine SOF control system. Background technique [0002] Due to the low operating temperature of the national V and national VI light-duty vehicles, SOF cannot be degraded in the DPF (diesel particulate filter) particulate filter, and has been accumulated on the surface of the SCR (Selective Catalytic Reduction) selective catalytic reduction agent. For a long time, it cannot Completion of the SOF removal system will cause the SCR to report an emission exceeding the standard fault. Contents of the invention [0003] The invention discloses a fault detection method and fault detection equipment of an engine SOF control system, which are used to improve the SOF removal by activating the parking regeneration of the particle trap and improve the judgment accuracy. [0004] To achieve the above object, the present inve...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01N9/00F01N11/00
CPCF01N9/002F01N11/005Y02T10/40
Inventor 王国栋王秀雷杨新达
Owner WEICHAI POWER CO LTD