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首页> 外文期刊>International Journal of Automotive Technology >Particulate Matter and Particle-Bound PAHs Emissions from Gasoline Direct Injection (GDI) Engine with Methanol-Gasoline Blended Fuel During Start
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Particulate Matter and Particle-Bound PAHs Emissions from Gasoline Direct Injection (GDI) Engine with Methanol-Gasoline Blended Fuel During Start

机译：在开始时，用汽油直喷（GDI）发动机的颗粒物质和颗粒状PAHS发射燃料

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摘要

The effects of coolant's temperature on emissions of particulate matters (PM) and particle-bound polycyclic aromatic hydrocarbons (PAHs) from a gasoline direct injection (GDI) engine were studied during the start process using gasoline (M0) and gasoline mixed with methanol in 15 % volume (M15). The engine worked at a certain idle speed automatically under different coolant's temperature conditions after successful start. The experimental data was recorded from 0 to 40 seconds during the start. Results indicated that, there are significant differences in PM and particle-bound PAHs emissions between cold and warm start conditions. Particulate size distribution was measured with the Engine Exhaust Particle Sizer (EEPS) 3090. Compared with M0 fuel, the PM emission of M15 fuel decreased significantly, especially nucleation-mode particulate emission. The mass emission of PM was measured using the Gravimetric method. A same variation trend in PM mass emissions can be inferred for both fuels, i.e. it decreases while the coolant's temperature increases. Compared with M0 fuel, the PM mass with M15 fuel reduces by 80 % at 20 oC coolant's temperature. Agilent 7000B GC-QQQ was used to provide both qualitative and quantitative analysis on PAHs. The application of M15 fuel reduces the concentrations of most PAH species compared with M0 fuel, except those with smaller aromatic rings. In addition, Benzo(a)pyrene equivalent toxicity (BEQ) is calculated to evaluate the toxicity of PAHs emissions. The toxicity decreases when the GDI engine starts with higher coolant's temperature or with M15 fuel.
机译：在使用汽油（M0）和15中，在开始过程中，研究了冷却剂对颗粒状物质（PM）和颗粒状多环芳烃（PAHS）的颗粒状物质（PM）和颗粒结合的多环芳烃（PAHS）的影响，并在15中与甲醇混合的汽油混合％体积（m15）。在成功开始后，发动机在不同的冷却液的温度条件下自动使用一定的怠速。在开始期间，实验数据从0到40秒记录。结果表明，PM和蓄冷性的冷热启动条件之间的PM和粒子结合的PAHS排放有显着差异。用发动机排气粒子Sizer（EEP）3090测量颗粒状尺寸分布。与M0燃料相比，PM发射M15燃料显着降低，特别是核心模颗粒发射。使用重量法测量PM的大量排放。可以推断出PM质量排放中的相同变化趋势，即燃料，即，在冷却剂的温度增加时，它会降低。与M0燃料相比，M15燃料的PM质量在20个OC冷却剂的温度下降低了80％。 Agilent 7000B GC-QQQ用于为PAHS提供定性和定量分析。除了具有较小芳环的那些外，M15燃料的应用降低了与M0燃料相比的大多数PAH物种的浓度。此外，计算苯并（a）芘当量毒性（beq），以评估PAHS排放的毒性。当GDI发动机从更高的冷却剂的温度或M15燃料开始时，毒性会降低。

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