Modeling method of ash content accumulation model of diesel particulate filter

A particle trap and modeling method technology, applied in the direction of machine/engine, electronic control of exhaust treatment device, diagnostic device of exhaust treatment device, etc., can solve the problem of reducing the effective filter area of ​​DPF, affecting the judgment of regeneration control system, Reduce filtration efficiency and other issues to achieve the effect of ensuring control accuracy and effectiveness, preventing overload damage, and reducing the probability of overload

Active Publication Date: 2018-11-13
SAIC MOTOR
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Problems solved by technology

The deposition of ash inside the DPF will, on the one hand, reduce the effective filtration area of ​​the DPF and reduce its filtration efficiency; on the other hand, it will also increase the flow resistance and affect the judgment of the regeneration control system

Method used

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  • Modeling method of ash content accumulation model of diesel particulate filter

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Embodiment Construction

[0030] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0031] Please see attached figure 1 , a modeling method of a particle trap ash accumulation model, comprising the following steps:

[0032] Step 1: Check the engine status;

[0033] Step 2: After the particle filter (DPF) has been regenerated and before the ash accumulation, carry out the initial weight weighing of the particle filter (DPF), and there is no ash and particles inside the particle filter (DPF);

[0034] Step 3: Rapidly load the particle filter (DPF) through the engine cycle, and complete a complete ash loading cycle after multiple rapid loads;

[0035] Step 4: Enter the regeneration mode, the process lasts for 30 minutes, and remove the accumulated carbon particles inside the particle filter (DPF). During the regeneration process, pay attention to the inlet temperature of the particle filter (DPF) within the range of 590°C-630°C...

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Abstract

The invention discloses a modeling method of an ash content accumulation model of a diesel particulate filter. The modeling method comprises the steps that step 1, the status of an engine is checked;step 2, the diesel particulate filter is weighed initially; step 3, ash content is subjected to loading cycle; step 4, a regeneration mode is entered; step 5, a reference point is tested, the accumulation cycle of the ash content is completed, the next accumulation cycle of the ash content is carried out; step 6, the number times of the accumulation cycle of the ash content is confirmed; step 7, the diesel particulate filter is weighed, engine oil is replaced, and data are recorded; step 8, the running time of the engine is confirmed; and step 9, modeling is carried out for analyzing the corresponding numerical relationship between ash content accumulation and fuel consumption. According to the modeling method of the ash content accumulation model of the diesel particulate filter, the relationship between the ash content accumulation rate and fuel oil consumption and engine oil consumption can be established accurately, and the control accuracy and effectiveness of an ECU for the regeneration process of the diesel particulate filter can be ensured.

Description

technical field [0001] The invention relates to the field of post-treatment of diesel engine exhaust, in particular to a modeling method of an ash accumulation model of a particle trap. Background technique [0002] With the rapid development of modern technology and the automobile industry, the status of diesel engines in the transportation industry has been continuously improved by virtue of the advantages of low fuel consumption and strong power. However, due to the unique compression ignition method of the diesel engine, many pollutants, such as nitrogen oxides, hydrocarbons, particles, carbon monoxide, etc., are produced after diesel combustion, which pose a threat to human health. As people pay more attention to environmental protection and their own health, diesel engine emission regulations are constantly updated, and the restrictions on diesel engine emissions are becoming stricter. [0003] At present, as one of the technologies for treating carbon particles, one ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/023F01N11/00
CPCF01N3/023F01N11/00F01N2550/04Y02T10/40
Inventor 姜山尚明高祥胡建月
Owner SAIC MOTOR
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