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    • 5. 发明授权
    • Supercritical diesel fuel composition, combustion process and fuel system
    • 超临界柴油燃料组成,燃烧过程和燃油系统
    • US07488357B2
    • 2009-02-10
    • US10997272
    • 2004-11-24
    • Lawrence L. TavlaridesGheorghe Antiescu
    • Lawrence L. TavlaridesGheorghe Antiescu
    • C10L1/12
    • C10L1/026C10L1/1233C10L3/00C10L10/02F01N5/02F02D19/0605F02D19/0652F02D19/12F02M25/00F02M53/02Y02E50/13Y02T10/121Y02T10/16Y02T10/36
    • An embodiment of the invention is a composition of diesel, biodiesel or blended fuel (DF) with exhaust gas (EG) mixtures or with liquid CO2. The composition is in a liquid state near the supercritical region or a supercritical fluid mixture such that it quasi-instantaneously diffuses into the compressed and hot air as a single and homogeneous supercritical phase upon injection in a combustion chamber. Suitable temperatures and pressures are greater than about 300° C. and 100 bar, and the mole fraction of EG or CO2 (XEG or XCO2) in DF is in the range of 0.0-0.9. In a combustion process embodiment, composition embodiments are injected into a combustion chamber under supercritical conditions. The content of EG or CO2 in DF can be controlled as a function of engine operating parameters such as rpm and load. The thermodynamic and transport properties of supercritical DF-EG or DF-CO2 compositions can be more easily tuned and controlled than subcritical two-phase compositions. Delivery of the DF-EG or DF-CO2 composition into the combustion chamber as a homogeneous isotropic single-phase composition provides a significant increase in engine efficiency. Combustion process and fuel system embodiments of the invention provide an improved composition process with reduced formation of particulate matter (PM), aldehydes, polyaromatic hydrocarbons (PAHs), CO, NOx, and SOx.
    • 本发明的一个实施方案是具有废气(EG)混合物或与液体CO 2的柴油,生物柴油或混合燃料(DF)的组合物。 组合物在超临界区域附近处于液体状态或超临界流体混合物,使得其在燃烧室中注射时准确地扩散成压缩和热空气中的单一且均匀的超临界相。 合适的温度和压力大于约300℃和100巴,并且DF中的EG或CO 2(XEG或XCO 2)的摩尔分数在0.0-0.9的范围内。 在燃烧过程实施例中,组合物实施例在超临界条件下被注入到燃烧室中。 DF中的EG或CO2的含量可以根据发动机运行参数(如转速和负载)进行控制。 超临界DF-EG或DF-CO2组合物的热力学和传输性能比亚临界两相组合物更容易调节和控制。 将DF-EG或DF-CO2组合物作为均相各向同性单相组合物输送到燃烧室中,显着提高发动机效率。 本发明的燃烧方法和燃料系统实施方案提供了一种改进的组合方法,其中颗粒物质(PM),醛,多芳族烃(PAH),CO,NO x和SO x的形成减少。