Characteristics of Particulate Matter Emissions on Diesel Passenger Vehicles Fueled with GTL Based on Real-road Operating Parameters

摘要

An on-board experimental research was made on diesel passenger vehicles fueled with national IV diesel, gas-to-liquid (GTL) fuel and three other different volume ratio of mixed fuel (G10D90, G20D80, G50D50) about the regularity of Particulate Matter (PM) emission characteristics changing with velocity, acceleration and vehicle specific power (VSP). The experimental results show that: PM emission rate increases gradually with higher velocity; acceleration leads to the deterioration of emissions; curves concave at the point when VSP value equals zero. Moreover, the emission rate of particle number decreases 50% to 60% while that of particle mass decreases 30% to 45% when the volumetric mixture ratio of GTL fuel improves. It is obvious that GTL fuel improves the characteristics of PM emission significantly, making it one of the promising clean alternative fuel.