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天然氣發(fā)動機寬域氧傳感器控制系統(tǒng)
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國家高技術(shù)研究發(fā)展計劃（863計劃）資助項目（2006AA11A1A9）


Universal Exhaust Gas Oxygen Sensor Control System for CNG Engine
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    摘要:

    研究了基于電控調(diào)壓器的增壓單燃料CNG發(fā)動機電控系統(tǒng),，在分析寬域氧傳感器的結(jié)構(gòu)和工作原理的基礎(chǔ)上，設(shè)計了以MPC561為主芯片的寬域氧傳感器控制系統(tǒng),，采用CJ125芯片設(shè)計了寬域氧驅(qū)動電路以及加熱電路,。設(shè)計了基于自適應(yīng)算法的空燃比閉環(huán)控制器，對氧傳感器加熱溫度進行閉環(huán)控制和對空燃比進行閉環(huán)控制,。通過在天然氣發(fā)動機試驗臺架上的空燃比閉環(huán)試驗,，驗證了所設(shè)計的空燃比自適應(yīng)閉環(huán)控制算法可以實現(xiàn)對空燃比的快速,、精確瞬態(tài)控制,，為發(fā)動機空燃比智能控制、提高發(fā)動機的經(jīng)濟性和改善排放提供了條件,。

    Abstract:

    The control system of boost CNG Engine based on electronic pressure regulator was studied. The structure and working principle of universal exhaust gas oxygen sensor were analyzed. Based on the main chip MPC561 and integrated CJ125, universal exhaust oxygen sensor control circuit and heater circuit were designed. Based on adaptive algorithm, the A/F ratio closed controller was designed and its control strategy of air-fuel closed loop was discussed. The CNG engine experiments of air-fuel ratio closed loop on bench test showed that the dynamic response of UEGO control system was rapid and accurate. Based on UEGO control system, the intelligent control of engine’s air-fuel ratio could be achieved, and the performance of economy and emission could be improved.

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冒曉建,宋君花,王都,張斌,王俊席,卓斌.天然氣發(fā)動機寬域氧傳感器控制系統(tǒng)[J].農(nóng)業(yè)機械學(xué)報,2013,44(1):1-5. Mao Xiaojian, Song Junhua, Wang Du, Zhang Bin, Wang Junxi, Zhuo Bin. Universal Exhaust Gas Oxygen Sensor Control System for CNG Engine[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(1):1-5.

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  • 在線發(fā)布日期: 2012-12-31
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