Abstract Regulated and unregulated emissions from two Euro 6b diesel passenger cars tested using three different blends of hydrotreated vegetable oil (HVO), fossil diesel and commercial diesel (B7) were investigated at 23 °C and −7 °C using the World harmonized Light-duty vehicle Test Procedure at the Vehicle Emission Laboratory of the European Commission Joint Research Centre Ispra, Italy. The HVO blends used were: Neat HVO (100 vol% HVO), 30 vol% HVO and 7 vol% HVO. One of the vehicles was also tested using the three HVO blends on-road following a RDE compliant route. Overall, the use of different HVO blends and diesel did not lead to fuel related trends on the emissions of the tested vehicles in the laboratory nor on-road. However, HVO-100 resulted in ∼4% lower CO2 emissions than the other fuel tested in all the studied conditions. Low ambient temperature caused an increase of the emissions of studied compounds (with the exception of NH3) with all tested blends. The experimental results showed that in many cases the observed outcomes were probably attributable to a combination of combustion effects, after-treatment effects, and their control strategy.

中文翻译：

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HVO 混合物在现实世界运行期间对现代柴油乘用车排放的影响

摘要 使用世界统一轻量化标准在 23 °C 和 -7 °C 下研究了使用加氢处理植物油 (HVO)、化石柴油和商用柴油 (B7) 的三种不同混合物进行测试的两辆欧 6b 柴油乘用车的受管制和不受管制的排放。欧盟委员会联合研究中心 Ispra 车辆排放实验室的工作车辆测试程序，意大利。使用的 HVO 混合物是：纯 HVO（100 vol% HVO）、30 vol% HVO 和 7 vol% HVO。其中一辆车还按照符合 RDE 的路线在公路上使用三种 HVO 混合物进行了测试。总体而言，使用不同的 HVO 混合物和柴油不会导致实验室和道路上测试车辆排放的燃料相关趋势。然而，在所有研究条件下，HVO-100 的二氧化碳排放量比其他燃料低约 4%。低环境温度导致所有测试混合物的研究化合物（NH3 除外）的排放量增加。实验结果表明，在许多情况下，观察到的结果可能归因于燃烧效应、后处理效应及其控制策略的组合。