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
CN110953041AInactive Publication Date: 2020-04-03KAILONG HIGH TECH
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
KAILONG HIGH TECH
Publication Date
2020-04-03
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Claims

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