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首页> 外文会议>Homogeneous charge compression ignition engines, 2009 >An Experimental Study of Dieseline Combustion in a Direct Injection Engine
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An Experimental Study of Dieseline Combustion in a Direct Injection Engine

机译：直喷发动机中正辛烷燃烧的实验研究

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The differences between modern diesel and gasoline engine configurations are now becoming smaller and smaller, and in fact will be even smaller in the near future. They will all use moderately high compression ratios and complex direct injection strategies. The HCCI combustion mode is likely to lead to the merging of gasoline and diesel engine technologies to handle the challenges they are facing, offering a number of opportunities for the development of the fuels, engine control and after-treatment. The authors' recent experimental research into the HCCI combustion quality of gasoline and diesel blend fuels has referred to the new combustion technology as 'Dieseline'. It is found that this kind of fuel blend provides some unexpected benefits to the expansion of the operating window and reduction of hydrocarbon emissions in HCCI engines, and these benefits include extended low misfire limit, increased engine stability, reduced peak cylinder pressures and reduced emissions within the whole HCCI operating window. It was shown that the lean limit of lambda can almost reach up to 2.0 when the engine is operated with moderate compression ratios. It is shown that the combustion of the blended fuel offers promise to the desired ignition quality, which reduces the dependence of HCCI on EGR trapping or intake heating for a wide range of CR. The HCCI operating region for the unheated NVO can be significantly extended into lower IMEP values and the audible knocking is restrained to the highest values of air fuel ratio at high load boundary for the highest mixture temperatures.
机译：现代柴油和汽油发动机配置之间的差异现在越来越小，实际上在不久的将来甚至会越来越小。它们都将使用适度的高压缩比和复杂的直接注射策略。 HCCI燃烧模式很可能导致汽油和柴油发动机技术的融合，以应对它们所面临的挑战，从而为开发燃料，发动机控制和后处理提供了许多机会。作者最近对汽油和柴油混合燃料的HCCI燃烧质量进行的实验研究将这种新的燃烧技术称为“ Dieseline”。结果发现，这种混合燃料为HCCI发动机的工作范围的扩大和碳氢化合物排放的减少提供了一些意想不到的好处，这些好处包括延长的低失火极限，增加的发动机稳定性，降低的峰值气缸压力和减少的内燃排放物。整个HCCI操作窗口。结果表明，当发动机以中等压缩比运行时，λ的稀薄极限几乎可以达到2.0。结果表明，混合燃料的燃烧为期望的点火质量提供了保证，从而降低了HCCI对宽范围CR时EGR捕集或进气加热的依赖性。可以将未加热的NVO的HCCI操作区域显着扩展到较低的IMEP值，并且在最高混合温度下，在高负载边界下，可听爆震抑制为空燃比的最高值。

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