DPF carbon load balancing method, device and system

A technology of carbon loading and DPF, which is applied to the electronic control of mufflers, exhaust devices, exhaust treatment devices, etc., and can solve the problems of DPF high temperature burning and DPF carrier deformation, etc.

Active Publication Date: 2020-05-08
WEICHAI POWER CO LTD
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  • Abstract
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Problems solved by technology

[0004] However, when the DPF is regenerated, due to the high exhaust temperature, the DPF carrier is deformed. In addition, the DPF is actively regenerated frequently, and there are problems such as the risk of DPF burning at high temperature.

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  • DPF carbon load balancing method, device and system
  • DPF carbon load balancing method, device and system
  • DPF carbon load balancing method, device and system

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Embodiment Construction

[0055] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. 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.

[0056] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects, and not necessarily Used to describe a specific sequence or sequence. It is to be understood that the data so used are interchangeable under appropriate ci...

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Abstract

The invention provides a DPF carbon load balancing method, device and system. The method comprises the steps of obtaining the carbon load, and obtaining a correction coefficient corresponding to the adjustment of the carbon load; obtaining a temperature control proportion coefficient of a diesel oxidation catalyst (DOC) according to the correction coefficient; detecting whether to execute a request of carbon load balance control or not according to the temperature control proportion coefficient of the DOC; and if yes, adjusting the engine speed so that a vehicle can maintain the preset vehiclespeed. Closed-loop control over DPF carbon load is realized, the frequency of active regeneration is reduced, DPF regeneration efficiency is improved, and DPF carrier burning is avoided.

Description

technical field [0001] The invention relates to the technical field of vehicle exhaust control, in particular to a method, device and system for balancing the carbon load of a DPF. Background technique [0002] There are three main types of vehicle exhaust particulate matter: carbon particles, particles of organic soluble substances adsorbed on the surface, and sulfate particles. [0003] DPF (Diesel Particulate Filter, DPF) is a ceramic filter installed in the diesel engine exhaust system, which can capture particulate emissions before they enter the atmosphere, where the collected black smoke (carbon particles) is getting more and more Too much, slowly it will lead to high exhaust back pressure, which will affect the power of the engine. The process of burning the collected black smoke through exhaust heating is called regeneration. With the strict requirements of vehicle exhaust particles, the process of active regeneration of DPF is frequent. [0004] However, when th...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N3/023F01N11/00
CPCF01N3/023F01N11/00F01N11/002Y02T10/40
Inventor 伏金龙王东升张蒿王意宝
Owner WEICHAI POWER CO LTD
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