论文信息 - Emission Characteristics of Particulate Number in an On-Board Test of a Diesel Passenger Car Fueled with Biodiesel

Emission Characteristics of Particulate Number in an On-Board Test of a Diesel Passenger Car Fueled with Biodiesel

In this paper, particulate numbers were measured from an in-service PASSAT passenger car fueled with blends of biodiesel and China Phase IV diesel in different ratios using EEPS-3090 (Engine Exhaust Particle Sizer) Spectrometer. Fuel blends composited of 5%, 10%, 20%, 50% and 100% biodiesel were used and nominated as B5, B10, B20, B50 and B100, respectively. A total average speed of 31 km/h was observed, and for urban arterial roads and suburban freeways, average speed displayed an individual magnitude of 19.7km/h and 72km/h. After using blends of biodiesel/diesel, particulate mass emission factors displayed different reduction percentages. For particulate number emission factors, increasing trend was observed on city arterial roads and a declining trend for sub streets in urban and suburban areas. Particulate numbers emission exhibited normal distribution on suburban highways, while bi-normal distribution was revealed for other types of roads. With higher biodiesel/diesel blending ratios, particulate number in accumulated mode from passenger car exhaust showed lower value but higher value for nuclei mode, and the center size for peak particulate number emissions moved towards smaller scales.

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