가솔린 차량의 누적주행거리에 따른 온실가스 배출특성 연구

A Study on the Emission Characteristics of Greenhouse Gas by Cumulative Mileage of Gasoline Vehicle

Abstract

An automobile is composed of a combination of a lot of parts, and it is difficult to maintain the same performance from a new car until it's scrapped. Greenhouse gases included in automobile emissions are typically carbon dioxide and methane. It is expected that this greenhouse gas will change depending on the aging (cumulative mileage) of the automobile However, the greenhouse gas characteristics by cumulative mileage lack of actual data due to time and economic difficulties. Therefore, in this paper, we selected automobile with high sales by displacement in korea and carbon dioxide and methane were measured by using method of the related law. The cumulative mileage is as follows; within 160 km (Statutory mileage by 2010), 6500 km (current statutory mileage), 15000 km (approximately 1-year average mileage of Non-business passenger vehicle). As a result of the test, the emission of carbon dioxide and methane was the smallest at 6,500 km, and increased in order of 15000 km, within 160 km. Also, it was confirmed that the $CO_2$ emission change of a large displacement automobile is more smaller at each mileage. Although the greenhouse gas tends to increase as the mileage of the vehicle, it is thought that additional confirmation is required of since 15,000 km as well, because it can occur deviations due to taming process or mechanical friction of the automobile.

Fig. 1 Schematic diagram of chassis dynamometer

Fig. 2 Test modes: (a) FTP-75, (b) HWFET

Fig. 3 Dyno load (Coastdown result) at 34 km/h

Fig. 5 Emission Result at FTP-75 mode

Fig. 8 Difference (%) of CO₂ emission at 15000 km compared to 6500 km

Fig. 7 Difference (%) of CO₂ emission at 6500 km compared to 0 km

Fig. 9 Load value at actual road condition accoding to vehicle speed

Fig. 4 Dyno load (Coastdown result) at 77 km/h

Fig. 6 Emission Result at HWFET mode

Table 1 Specifications of test vehicles

Table 2 Specification of the emission analyzer

Table 3 Key features of the fuel economy test mode

Table 4 Specifications of test fuel