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汽油機(jī)與LPG發(fā)動(dòng)機(jī)冷起動(dòng)特性試驗(yàn)
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    摘要:

    設(shè)計(jì)了多點(diǎn)進(jìn)氣道順序噴射發(fā)動(dòng)機(jī)電子控制系統(tǒng),，對(duì)LPG和汽油兩種燃料不同溫度下的冷起動(dòng)特性進(jìn)行了試驗(yàn),，研究了初始燃料噴射脈寬,、起動(dòng)噴射脈寬衰減梯度、初始節(jié)氣門開度,、節(jié)氣門開度衰減梯度等控制參數(shù)對(duì)兩種燃料發(fā)動(dòng)機(jī)冷起動(dòng)過程中過量空氣系數(shù)Φa,、瞬時(shí)轉(zhuǎn)速和瞬態(tài)排放等起動(dòng)性能的影響，為研究燃料冷起動(dòng)特性,、降低發(fā)動(dòng)機(jī)排放,、開發(fā)發(fā)動(dòng)機(jī)電子控制系統(tǒng)提供參考依據(jù)。

    Abstract:

    An electronic controlled port fuel injection system was developed. Cold start characteristics of gasoline engine and LPG engine were studied by the experiment. Effects of initial fuel injection pulse width, initial throttle position, injection width attenuation gradient, throttle angle attenuation gradient and other control parameters on transient air to fuel ratio, transient engine speed and transient emissions were studied. Reference basis was provided for the further research on fuel cold start characteristics, the reduction of engine emission and the development of electronic controlled fuel injection system

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于秀敏,唐睿,楊世春,劉樂.汽油機(jī)與LPG發(fā)動(dòng)機(jī)冷起動(dòng)特性試驗(yàn)[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(4):4-7.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(4):4-7.

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