A control method and system for rapidly realizing active regeneration of dpf
A technology of active regeneration and control method, which is applied in the direction of electronic control of exhaust gas treatment devices, engine components, combustion engines, etc., can solve problems such as DPF blockage, and achieve the effect of saving fuel
Active Publication Date: 2022-07-05
DONGFENG COMML VEHICLE CO LTD
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Problems solved by technology
[0004] In view of the defects existing in the prior art, the purpose of the present invention is to provide a control method and system for quickly realizing the active regeneration of DPF, which can quickly realize the active regeneration function of DPF, and avoid that the program cannot automatically trigger the DPF through the carbon load estimated in the DPF DPF blockage problem due to active regeneration
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Embodiment Construction
[0059] The embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
[0060] Embodiments of the present invention provide a control method and system for rapidly realizing active regeneration of DPF. By accepting an active regeneration command, three stages of fuel injection are performed to gradually complete the regeneration of the DPF, which can prevent the program from passing through the estimated carbon load in the DPF. Unable to automatically trigger DPF active regeneration and cause DPF blockage problem.
[0061] In order to achieve the above-mentioned technical effect, the general idea of the application is as follows:
[0062] Receive DPF active regeneration command;
[0063] Running the engine according to the preset first fuel injection amount and the first fuel injection timing, so that the engine is switched from the idle speed to the preset speed;
[0064] Running the engine according to the ...
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The invention discloses a control method and system for rapidly realizing active regeneration of DPF, and relates to the field of engine control. The method includes receiving a command of active regeneration of DPF. The engine is operated according to the preset first fuel injection amount and the first fuel injection timing, so that the engine is switched from the idle speed to the preset rotation speed. The engine is operated according to the preset second fuel injection amount and the second fuel injection timing, so that the DOC inlet temperature is higher than the preset temperature. Calculate the DPF fuel injection amount according to the total exhaust gas amount and the temperature difference, the exhaust gas total amount is equal to the sum of the first fuel injection amount, the second fuel injection amount and the intake air amount, and the temperature difference is equal to the DPF inlet target temperature and the DOC difference in inlet temperature. The HC injection valve is controlled to inject fuel according to the DPF injection quantity to perform DPF regeneration. The present invention provides a control method for active regeneration.
Description
technical field [0001] The invention relates to the field of engine control, in particular to a control method and system for rapidly realizing active regeneration of a DPF. Background technique [0002] Diesel engines are widely used in all walks of life due to their high thermal efficiency, low fuel consumption, and good durability. Diesel engines bring convenience to people, but also bring serious environmental pollution problems. Particulate matter and nitrogen oxides in exhaust gas are the main objects of diesel emission control. In order to cope with the historically strict China VI diesel engine emission regulations, at present, the DPF technology of diesel particulate filter is considered to be the most effective means to solve the problem of diesel particulate emission. Its honeycomb-like ceramic carrier structure filters and captures particulate matter in diesel exhaust through diffusion, deposition and impact mechanisms. In the process of filtering and capturin...
Claims
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IPC IPC(8): F01N9/00F01N3/025
CPCF01N9/002F01N3/0253Y02T10/40
Inventor 韩虎周杰敏张衡杨晓莹郑攀李芳鲍星睿王梅俊
Owner DONGFENG COMML VEHICLE CO LTD