Method and system for controlling DPF regeneration and engine

A DPF and engine technology, applied in the direction of engine components, engine control, combustion engine, etc., can solve the problems of DPF burning, large difference, and difficult to accurately judge DPF regeneration, and achieve the effect of preventing burning

Active Publication Date: 2020-01-31
WEICHAI POWER CO LTD
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  • Summary
  • Abstract
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  • Claims
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Problems solved by technology

However, when the engine is not actually working or under the conditions of heating in winter and cooling in summer, the carbon load of DPF (the quality of soot inside the DPF) is quite different from that in normal operation.
However, the existing carbon load model is difficult to accurately judge DPF regeneration under this working condition, and the problem of DPF burning is prone to occur

Method used

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  • Method and system for controlling DPF regeneration and engine
  • Method and system for controlling DPF regeneration and engine
  • Method and system for controlling DPF regeneration and engine

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Embodiment Construction

[0040] 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.

[0041] According to an embodiment of the present application, a method for controlling DPF regeneration is proposed, such as figure 2 shown, including:

[0042] S101, calculating the correction factor in real time according to the total running time of the engine and the low-load running time;

[0043] S102. Determine the elapsed time, the fuel consumption and the traveled mileage between the current and the last DPF regeneration...

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Abstract

The invention relates to the field of an engine, and in particular relates to a method and system for controlling DPF regeneration and the engine. The method for controlling DPF regeneration comprisesthe steps of according to the total running time and low-load running time of the engine, calculating a correction factor in real time; according to the last DPF regeneration time, fuel consumption and mileage, determining elapsed time, consumed fuel quantity and mileage traveled; according to the correction factor, the elapsed time, consumed fuel quantity and the mileage traveled, determining running correction time, fuel consumption collection and driving collection mileage; judging whether the running correction time, the fuel consumption collection and the driving collection mileage exceed the corresponding threshold value; and if one exceeds, triggering DPF regeneration. By calculating the correction factor in real time, the method determines the running correction time, the fuel consumption collection and the driving collection mileage according to the correction factor, the elapsed time, the consumed fuel quantity and the mileage traveled, judges whether one exceeds the threshold value, and triggers DPF regeneration. The method can control DPF regeneration according to actual working conditions and prevent DPF from being burned.

Description

technical field [0001] The present application relates to the field of engines, in particular to a method, system and engine for controlling DPF regeneration. Background technique [0002] A particulate filter (Diesel Particulate Filter, DPF) is a ceramic filter installed in the diesel engine exhaust system, such as figure 1 As shown, it can capture particulate emissions before they enter the atmosphere. A small part of the engine exhaust gas enters the cylinder through the exhaust gas recirculation system (Exhaust Gas Recirculation, EGR) and air together with the throttle valve (Throttle Valve, TVA) and enters the cylinder for combustion. After that, a part of the exhaust gas passes through the HC nozzle, the diesel oxidation catalyst (Diesel Oxidationcatalyst) , DOC), DPF and selective catalytic reduction (SelectiveCatalyticReduction, SCR), discharge. As more and more micro-particles are collected in the DPF, the exhaust back pressure will gradually increase, which will ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01N9/00
CPCF01N9/002Y02T10/40F02D41/029F02D2200/0625F01N2900/08F01N2900/102
Inventor 谭旭光佟德辉范振勇韩峰褚国良王佳兴冯海浩王素梅邱东
Owner WEICHAI POWER CO LTD
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