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噴油助燃再生DPF過濾體入口廢氣溫度條件研究
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國家自然科學(xué)基金資助項目（50876027）和湖南省教育廳資助項目（08C797）


Inlet Exhaust Gas Temperature Condition for a Burner-type DPF at the Low and Moderate Load Steady State
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    摘要:

    闡述了DPF噴油助燃再生的工作原理，在考慮過濾體內(nèi)沉積微粒氧化反應(yīng)次模型的基礎(chǔ)上，以壁流式蜂窩陶瓷過濾體為研究對象，建立柴油機穩(wěn)態(tài)工況下過濾體入口孔道的再生簡化模型?？紤]到柴油機中小負(fù)荷排氣富氧條件，通過無量綱化，結(jié)合DPF的排氣背壓模型，得到了噴油助燃再生DPF時過濾體入口端所需的溫度條件。試驗表明，以該條件獲得的理論過濾體入口廢氣溫度所對應(yīng)的噴油率來調(diào)節(jié)燃燒器功率可順利實現(xiàn)DPF的再生過程，為DPF噴油助燃再生系統(tǒng)的設(shè)計提供了一定的理論依據(jù)。

    Abstract:

    The operation principle of a burner-type diesel particulate filter was presented. Taking the subordinate oxidation reaction model into consideration, and taking the honeycomb wall-flow ceramic monolith filter as a research object, the simplified regeneration model in the single inlet channel of the filter was built at the steady state of the diesel engine. Based on the non-dimensionalization and the exhaust back-pressure model of DPF, the required temperature condition of the inlet exhaust for the burner-type DPF was obtained. The tests showed that the DPF regeneration could be smoothly completed by the burner power adjustment according to the oil spray rate correspond to the theoretical inlet exhaust temperature. It provided a definite theory basis to the design of the burner-type DPF.

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伏軍,龔金科,吳鋼,余明果,吁璇,張文強.噴油助燃再生DPF過濾體入口廢氣溫度條件研究[J].農(nóng)業(yè)機械學(xué)報,2011,42(3):1-5,10. Fu Jun, Gong Jinke, Wu Gang, Yu Mingguo, Yu Xuan, Zhang Wenqiang. Inlet Exhaust Gas Temperature Condition for a Burner-type DPF at the Low and Moderate Load Steady State[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(3):1-5,10.

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