DPF regeneration triggering method and DPF regeneration triggering device
A technology of triggering device and DPF, applied in the field of vehicles, can solve the problems such as difficulty in accurately judging DPF, inability to distinguish DPF differential pressure characteristics, etc., to achieve the effect of improving real-time correction and improving reliability
Active Publication Date: 2020-02-04
WEICHAI POWER CO LTD
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Problems solved by technology
[0004] The purpose of the present invention is to at least solve the problem that the existing strategies cannot distinguish the DPF pressure difference characteristics under different dust accumulations, which makes it difficult to accurately judge the DPF regeneration
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[0038] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.
[0039] It should be understood that terminology used herein is for the purpose of describing particular example embodiments only and is not intended to be limiting. As used herein, the singular forms "a", "an" and "the" may also be meant to include the plural forms unless the context clearly dictates otherwise. The terms "comprising", "comprising", "containing" and "having" are inclusive and thus indicate the presence of stated fea...
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The invention belongs to the technical field of vehicles and particularly relates to a DPF regeneration triggering method and a DPF regeneration triggering device. The DPF regeneration triggering method includes the following steps that the current ash carrying capacity of a DPF is obtained; the wall face ash carrying capacity and the gas inlet hole way tail end ash carrying capacity are calculated according to the current ash carrying capacity of the DPF; a DPF carbon deposit correction factor based on the ash content is calculated according to the wall face ash carrying capacity and the gasinlet hole way tail end ash carrying capacity, and the carbon carrying capacity is corrected based on the ash content DPF carbon deposit correction factor; and the corrected carbon carrying capacity exceeds the set carbon carrying capacity, and regeneration is triggered. In the DPF regeneration triggering method, different ash accumulating characteristics of the DPF can be obtained in a self-adaptive manner based on the differential pressure deviation after regeneration, and therefore a carbon carrying capacity model is corrected, real-time correction of DPF regeneration triggering calculationunder the DPF complex environment is improved, and reliability of the DPF is improved.
Description
technical field [0001] The invention belongs to the technical field of vehicles, and in particular relates to a DPF regeneration triggering method and a DPF regeneration triggering device. Background technique [0002] DPF (English name: Diesel Particulate Filter, Chinese name: particle trap) in the process of trapping particles and regeneration, the ash that is difficult to gasify and remove is deposited inside the filter body, which affects the pressure drop performance of DPF and shortens the available space inside DPF , while affecting the timing of DPF triggering active regeneration. [0003] Existing strategies cannot distinguish DPF differential pressure characteristics under different methods of ash accumulation, resulting in differential pressure measurement deviation, and at the same time affecting the calculation error of carbon load in DPF and related protection of DPF. With the increase of DPF ash load, DPF regeneration is prone to occur The problem that is dif...
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Login to View More IPC IPC(8): F01N9/00F01N11/00
CPCF01N9/002F01N11/00F01N2900/14F01N2900/1606Y02T10/40
Inventor 王素梅王佳兴褚国良邱东
Owner WEICHAI POWER CO LTD