Combustion, noise and vibrations produced by n-Butanol and Oleic Acid Methyl Ester (MO) in Reactivity Controlled Compression Ignition (RCCI) were investigated. The Cetane Number was determined using a Constant Volume Combustion Chamber (CVCC) for MO100, ULSD, and n-Butanol and found to be 73.8, 47.2, and 16 respectively. In the case of the MO20Bu80 (Methyl Oleate 20% with 80% n-butanol), the maximum Apparent Heat Release Rate was higher compared to ULSD Classical Diesel Combustion (CDC), due to accumulation of fuel in the combustion chamber because of the longer ignition delay and cylinder and charge cooling effect of n-butanol. RCCI with Methyl-Oleate had a vibrations level of as much 4.5 (m/s2) higher than ULSD in CDC up to 2k Hz. The sound level found by the Acoustic Array sound level for MO20Bu80 in combustion was 4 (dB) louder than ULSD in CDC. RCCI was found to have its own acoustic spectrum compared to CDC, and this is because of the wider range and higher sound levels produced by RCCI. The study suggests that MO can be used as a surrogate fuel for full body biodiesel in RCCI combustion.

中文翻译：

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反应性控制压缩点火中的正丁醇和油酸甲酯、燃烧和 NVH 特性

研究了正丁醇和油酸甲酯 (MO) 在反应性控制压缩点火 (RCCI) 中产生的燃烧、噪音和振动。使用恒容燃烧室 (CVCC) 测定 MO100、ULSD 和正丁醇的十六烷值，结果分别为 73.8、47.2 和 16。在 MO20Bu80（20% 油酸甲酯和 80% 正丁醇）的情况下，与 ULSD 经典柴油燃烧 (CDC) 相比，最大表观热释放率更高，这是由于燃料在燃烧室中积累的时间更长正丁醇的点火延迟和气缸和充气冷却效果。在 CDC 中，含油酸甲酯的 RCCI 的振动水平比 ULSD 高 4.5 (m/s2)，最高可达 2k Hz。声学阵列声级发现 MO20Bu80 在燃烧时的声级比 CDC 中的 ULSD 高 4 (dB)。与 CDC 相比，发现 RCCI 具有自己的声谱，这是因为 RCCI 产生的范围更广、声级更高。该研究表明，MO 可用作 RCCI 燃烧中全身生物柴油的替代燃料。