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Diesel engine grading particle pyrolysis activation energy quantitative evaluation method

A technology of graded pyrolysis and evaluation method, which is applied in the field of evaluation of the activation energy parameters of the pyrolysis of classified particulate matter in diesel engine exhaust, and can solve problems such as gaps

Pending Publication Date: 2020-02-14
JIANGSU UNIV
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  • Application Information

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Problems solved by technology

In the particles obtained by direct sampling with filter paper, fine particles tend to agglomerate and coalesce into large particles, resulting in a large gap between the direct test results and the actual situation of the DPF regeneration process

Method used

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  • Diesel engine grading particle pyrolysis activation energy quantitative evaluation method
  • Diesel engine grading particle pyrolysis activation energy quantitative evaluation method
  • Diesel engine grading particle pyrolysis activation energy quantitative evaluation method

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Embodiment Construction

[0046] The embodiments of the present invention will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present invention, but should not be construed as limiting the present invention.

[0047] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , Or integrally connected; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication between two components. F...

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Abstract

The invention discloses a diesel engine grading particle pyrolysis activation energy quantitative evaluation method, and relates to the technical field of the diesel engine grading particle emission.The method comprises four steps of grading of particulate matters, pretreatment of particulate matters, thermogravimetry test on the particulate matters in different particle size ranges, and mathematical calculation analysis on acquired thermogravimetry data by adopting a FWO method formula. A micropore uniform deposition impactor and a thermogravimetry analyzer measurement device are used for collecting and treating the particulate matters to acquire a TG / DTG curve of the particulate matters in different particle size ranges, and the final pyrolysis activation energy values of the particulate matters in different particle size ranges can be obtained by performing linear fitting manner on the obtained data. Through the method disclosed by the invention, the oxidation activation energy ofthe particulate matters in different particle sizes of the to-be-tested diesel engine can be quickly and accurately acquired, thereby providing effective parameters for the regenerative design of a DPF.

Description

Technical field [0001] The invention belongs to the technical field of diesel engine particulate matter emission, and in particular relates to a method for evaluating the pyrolysis activation energy parameters of diesel engine exhaust classification particulate matter. Background technique [0002] Due to the diffusion combustion method adopted by diesel engines, higher particulate matter emissions will be generated during actual work, which is a serious hazard to the environment and human health. Therefore, the treatment of diesel engine exhaust particulate matter has attracted widespread attention from the society. Diesel particulate filter (DPF) is an effective means to reduce particulate matter emissions, but it must be reliably regenerated periodically. DPF active regeneration is an effective regeneration method, including fuel injection combustion-supporting regeneration and electric heating regeneration. Since the oxidation characteristics of particulate matter are an imp...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N15/00G01N15/02G01N5/04
CPCG01N15/0272G01N15/00G01N5/04G01N15/0255G01N2015/0261G01N2015/0046G01N2015/0288
Inventor 刘军恒吴鹏程孙平嵇乾王乐健刘增光
Owner JIANGSU UNIV
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