本文關(guān)鍵詞：基于GT-Power的天然氣發(fā)動(dòng)機(jī)爆震分析與研究　出處：《車(chē)用發(fā)動(dòng)機(jī)》2016年05期 　論文類(lèi)型：期刊論文

  更多相關(guān)文章： 天然氣發(fā)動(dòng)機(jī) 爆震 性能模擬

【摘要】：為了改善增壓天然氣發(fā)動(dòng)機(jī)的燃燒狀況、提高發(fā)動(dòng)機(jī)的性能,對(duì)某發(fā)電用增壓天然氣發(fā)動(dòng)機(jī)爆震現(xiàn)象進(jìn)行研究。利用GT-Power軟件建立了增壓天然氣發(fā)動(dòng)機(jī)整機(jī)仿真模型,通過(guò)模擬數(shù)據(jù)與試驗(yàn)數(shù)據(jù)的對(duì)比驗(yàn)證了模型的準(zhǔn)確性,然后在仿真模型中利用自主建立的爆震預(yù)測(cè)模型對(duì)天然氣發(fā)動(dòng)機(jī)的性能和爆震現(xiàn)象進(jìn)行了模擬計(jì)算,并對(duì)得到的數(shù)值結(jié)果進(jìn)行分析。結(jié)果表明:隨著壓縮比的增加,發(fā)動(dòng)機(jī)發(fā)生爆震的可能性增大,爆震開(kāi)始時(shí)刻提前,爆震強(qiáng)度增大,燃?xì)庀穆食尸F(xiàn)先減小后增大的趨勢(shì),壓縮比為13時(shí),燃?xì)庀穆首钚?隨著點(diǎn)火提前角的增加,發(fā)動(dòng)機(jī)發(fā)生爆震的可能性增大,爆震開(kāi)始時(shí)刻提前,爆震強(qiáng)度基本不變,燃?xì)庀穆首兓厔?shì)是先減小后增大,當(dāng)點(diǎn)火提前角為-21°時(shí),燃?xì)庀穆首钚　?br/>[Abstract]:In order to improve the combustion of turbocharged natural gas engine and improve the performance of the engine. The detonation phenomenon of a supercharged natural gas engine for power generation is studied. The simulation model of turbocharged natural gas engine is established by using GT-Power software. The accuracy of the model is verified by comparing the simulation data with the experimental data. Then the performance and detonation phenomena of natural gas engine are simulated and calculated by using the independently established detonation prediction model in the simulation model. The results show that the possibility of detonation increases with the increase of compression ratio, and the detonation intensity increases as the detonation begins earlier. The gas consumption rate decreases first and then increases. The compression ratio is 13:00 and the gas consumption rate is the smallest. With the increase of ignition advance angle, the possibility of engine detonation increases, the detonation start time is early, the detonation intensity is basically unchanged, and the change trend of gas consumption rate is to decrease first and then increase. When the ignition advance angle is -21 擄, the gas consumption rate is minimum.
【作者單位】： 山東理工大學(xué)交通與車(chē)輛工程學(xué)院;
【分類(lèi)號(hào)】：TK431
【正文快照】： 天然氣具有儲(chǔ)存量大、有害物質(zhì)排放少、抗爆性能好等特點(diǎn),是一種較為理想的替代燃料。由于天然氣的著火溫度較高,火焰?zhèn)鞑ニ俣嚷?容易造成天然氣發(fā)動(dòng)機(jī)后燃嚴(yán)重、排氣溫度高、熱負(fù)荷大,從而導(dǎo)致天然氣發(fā)動(dòng)機(jī)能耗增加、熱效率降低,使得天然氣發(fā)動(dòng)機(jī)的動(dòng)力性能與汽油機(jī)和柴油機(jī)

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本文編號(hào)：1365144