Control method for reducing particle emission of diesel engine
The invention discloses a control method for reducing particle emission of a diesel engine, and relates to engine tail gas treatment. Supercharge pressure in the operation process of the engine is collected; whether the supercharger breaks down or not is judged according to the supercharging pressur...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a control method for reducing particle emission of a diesel engine, and relates to engine tail gas treatment. Supercharge pressure in the operation process of the engine is collected; whether the supercharger breaks down or not is judged according to the supercharging pressure; if the boost pressure is within the set threshold range, the running state of the engine is continuously monitored; and if the supercharging pressure is out of the set threshold range, judging that the supercharger breaks down, obtaining the circulating air inflow of the engine, obtaining the smoking limiting oil quantity according to the circulating air inflow and the calibrated excess air coefficient, and then taking the smoking limiting oil quantity as the actual oil injection quantity of the engine. According to the invention, a series of problems that the exhaust pipe temperature is abnormally high and the DPF is uncontrollably regenerated under a severe condition due to the fact that the emission is seriou |
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