V.6. In-cylinder measurements of mixture composition for investigation of residual gas scavenging

机译：V.6。缸内混合气成分测量，用于研究残留气体清除

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Laser Raman scattering with boradband signal detection is employed to simultaneously measure the mole fractions of CO_2, O_2, N_2, C)3H_8, and H_2O under conditions simulating a cold start. The engine is operated with well-premixed fuel and air, such that each of the measured species can be used to independently estimate the mole fraction of burnt residual gases. he residual gas mole fraction estimates are subsequently examined for consistency and for evidence of poor scavenging of H_2O due to condensation on the cold combustion chamber walls. The data indicate that if this mechanism inhibiting H_2O scavenging is operative, it results in H_2O number densities which are only 10-15

机译：在模拟冷启动的条件下，采用带有拉带信号检测的激光拉曼散射技术同时测量CO_2，O_2，N_2，C）3H_8和H_2O的摩尔分数。发动机以充分混合的燃料和空气运行，因此每种被测物质都可用于独立估计燃烧残留气体的摩尔分数。随后检查残留气体摩尔分数的估计值的一致性，以及由于冷燃烧室壁上的冷凝而导致H_2O清除能力差的证据。数据表明，如果这种抑制H_2O清除的机制起作用，则其导致的H_2O数密度仅为10-15

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来源
《Selected Papers from the 9th International Symposium on Laser Techniques Applied to Fluid Mechanics Lisbon, Portugal, July 13-16, 1998》|1998年|p.457-471|共15页
会议地点 Lisbon(PT)
作者
P.Miles;
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原文格式 PDF
正文语种 eng
中图分类无线电电子学、电信技术;
关键词
Raman scattering; Residual gas scavenging;

机译：拉曼散射残留气体清除;

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V.6. In-cylinder measurements of mixture composition for investigation of residual gas scavenging

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