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首页> 外文会议>Homogeneous charge compression ignition engines, 2009 >Realization of Dual Phase High Temperature Heat Release Combustion of Base Gasoline Blends from Oil Refineries and a Study of HCCI Combustion Processes
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Realization of Dual Phase High Temperature Heat Release Combustion of Base Gasoline Blends from Oil Refineries and a Study of HCCI Combustion Processes

机译：炼油厂基础汽油混合物双相高温放热燃烧的实现及HCCI燃烧过程的研究

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摘要

It was reported that n-heptane and toluene blended fuels (NTL series fuels) showed the dual phase high temperature heat release (DP-HTHR) combustion in a previous SAE paper [1]. DP-HTHR has the potential to enlarge the engine operational range to high load conditions and lower the engine combustion noise. Further research has been reported in this paper. Initial interests were in the combustion characteristics of a second "bump" in the high temperature heat release (2nd HTHR) in DP-HTHR, since this kind of two-stage combustion appears, when CO oxidation radically occurs over the 1450K temperature range. To prove this 2nd HTHR of DP-HTHR was not caused by a rapid CO oxidation process, and indeed by the decomposition and oxidation of the benzene ring in toluene (benzyl radicals and aromatics), exhaust emissions (THC, NOx, CO, CO2) and in-cylinder pressure data were measured at the same HTHR CA50 (the crank angle of 50% burn of high temperature heat release) and IMEP condition with the DP-HTHR fuel (NTL75) and non-DP-HTHR fuels (PRF90, NDB90 and NMP85). The CO emissions were evaluated by vol% scale and emitted quantity to correct the differences of fuel density, the H/C ratio and injected fuel quantity between the fuels. These data analyses supported that the decomposition and oxidation of the benzene ring at hot flame temperature was the starting trigger of the 2~(nd) HTHR in DP-HTHR combustion. The second interest was the possibility of DP-HTHR combustion with the blends of the refinery-based gasoline. NTL fuels are the surrogate fuels consisting of n-heptane and toluene.
机译：据报道，在以前的SAE论文中，正庚烷和甲苯混合燃料（NTL系列燃料）显示出双相高温放热（DP-HTHR）燃烧。 DP-HTHR具有将发动机的工作范围扩大到高负载条件并降低发动机燃烧噪音的潜力。本文已报道了进一步的研究。最初的关注点是DP-HTHR中高温放热（第二HTHR）中第二个“凸点”的燃烧特性，因为当CO氧化在1450K温度范围内发生自由基时，会出现这种两阶段燃烧。为了证明DP-HTHR的第二个HTHR不是由快速的CO氧化过程引起的，实际上不是由甲苯中的苯环（苄基和芳族化合物）的分解和氧化，废气排放（THC，NOx，CO，CO2）引起的和缸内压力数据是在相同的HTHR CA50（高温放热燃烧50％的曲柄角）和IMEP条件下使用DP-HTHR燃料（NTL75）和非DP-HTHR燃料（PRF90，NDB90和NMP85）。通过vol％标度和排放量评估CO排放量，以纠正燃料密度，H / C比和燃料之间的喷射燃料量之间的差异。这些数据分析支持在热火焰温度下苯环的分解和氧化是DP-HTHR燃烧中2〜（nd）HTHR的触发因素。第二个兴趣是DP-HTHR与炼油厂汽油的混合物燃烧的可能性。 NTL燃料是由正庚烷和甲苯组成的替代燃料。

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