3. Experhnental Methods and Equipments
Table 3 states the specifications of the engine used for the experiment and figure 5 illustrates the experimental schematic diagram. The concentration of NOx, SO2, CO2, O2. NO and emission rate of PMs were measured. NOx concentration was measured with a chemiluminescent analyzer (NOA-305A, Shimazu), O2 concentration with a paramagnetic detector (POT-101 , Shimadzu), CO2, NO2, CO with a constant potential electric detector (Testo 33) and SO2 with an infrared-ray analyzer (URA-107). PMS Were sampled on a glass-fiber filter at the rate of 60 liters of gas per filter. The emission rate of PMs was calculated from the mass weighed with a microbalance.