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仪器网/ 行业应用/ 解决方案/ 使用真实燃料条件下直喷活塞发动机内空燃比的空间分辨测

使用真实燃料条件下直喷活塞发动机内空燃比的空间分辨测

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The present work describes a new method which allows the spatially resolved quantitative determination of gaseous hydrocarbon densities in droplet laden flows. The technique is especially dedicated to a quantitative and linearly spatially resolved measurement of air/fuel ratio (-value) in direct injection Otto engines under stratified
operation and by use of regular gasoline (Euro Super). The new method is based on spontaneous Raman scattering. It is applied to the investigation of the air/fuel ratio distribution inside and in the close surroundings of the spray cone of different DI-fuel injectors under stratified and homogeneous engine operation conditions. Both crank angle resolved snap shot and cyclical averaged measurements are presented. Simultaneously the planar gasoline distribution is detected by LIF of aromatic hydrocarbons which are native constituents of regular gasoline. It is shown, that the
linear spatially resolved air/fuel distributions measured by means of LIF correlate well with the Raman data. 汽车发动机多参量测试系统 德国LaVision PIV/PLIF粒子成像测速场仪 PLIF平面激光诱导荧光火焰燃烧检测系统
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