Control method of non-road DPF system

A control method, DPF technology, applied in combustion engines, machines/engines, mechanical equipment, etc., to avoid accumulation, achieve timely response, and avoid excessive temperature

Inactive Publication Date: 2020-04-03
KAILONG HIGH TECH
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  • Claims
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Problems solved by technology

[0005] The object of the present invention is to solve the problems mentioned in the abov

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  • Control method of non-road DPF system
  • Control method of non-road DPF system
  • Control method of non-road DPF system

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, but not to limit the present invention. In addition, it should be noted that, for the convenience of description, only some parts related to the present invention are shown in the accompanying drawings but not the whole content. Unless otherwise defined, all technical and scientific terms used herein are related to the technical field of the present invention. The skilled person generally understands the same meaning. The terms used herein are for describing specific embodiments only, and are not intended to limit the present invention.

[0023] Please refer to Figure 1 to Figure 5 As shown, the non-road diesel engine burner DPF system control method in this embodiment specifically includes: DPF forced regeneration request; DPF forced stop regeneration c...

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Abstract

The invention discloses a control method of a non-road diesel particulate filter (DPF) system, which comprises the following steps: a DPF forced regeneration request; a DPF forced stop regeneration completion request; a DPF combustor warmup request; determination of the regeneration working time based on a pressure difference/flow resistance model; heater plug ignition and heating initialization;flame propagation and diffusion of a mixed gas; successful combustion of the mixed gas; DPF regeneration temperature closed-loop control; fuel injection quantity open-loop calculation; fuel injectionquantity closed-loop calculation; determination of the exhaust over-temperature of the DPF; and finishing of the DPF regeneration and purging by an air pump. The DPF combustor has a high regenerationspeed, does not need to perform bus signal transmission with a diesel engine, has a small influence on the running of a vehicle, is easy to operate, has no negative effect, and cannot influence the performance of the diesel engine.

Description

technical field [0001] The invention relates to the technical field of DPF active regeneration control, in particular to a method for controlling a DPF system of a non-road diesel engine burner. Background technique [0002] Particulate matter in diesel vehicle exhaust emission pollution is also a major pollutant. Particulate matter treatment technology mainly reduces particulate matter in exhaust by means of capture. In terms of reducing particulate matter emissions from diesel engines, the most effective technology currently recognized is particulate filter technology. The Diesel Exhaust Particulate Filter (DPF) system can eliminate 95% of the particulate matter (black smoke) emission from the diesel engine and reduce the PM content in the air. The exhaust temperature of the actual diesel engine is low under the idling speed, low speed and small load conditions, which cannot meet the working temperature requirements of the DOC catalytic converter and the DPF catalytic con...

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Application Information

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IPC IPC(8): F01N3/025F01N9/00
CPCF01N3/0253F01N9/002Y02T10/40
Inventor 臧志成朱磊徐睿曾伟
Owner KAILONG HIGH TECH
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