Particulate Emission Characteristics and GPF Performance of WLTC Cycle based on Exhaust Gas Simulator
- Delivery
- Available on this site
- Format
- Price
- Non-members (tax incl.)：￥1,100 Members (tax incl.)：￥880
- Publication code
- 20239238
- Paper/Info type
- Other International Conferences
- Pages
- 1-10(Total 10 p)
- Date of publication
- Aug 2023
- Publisher
- JSAE & SAE
- Language
- English
- Event
- 2023 P, E&L
Detailed Information
| Category(E) | EC1 Testing and Emissions Measurement |
|---|---|
| Author(E) | 1) Xiao Hu, 2) Quanbo Shang, 3) Kai Wang, 4) Liguang Li, 5) Zhijun Wu, 6) Jun Deng |
| Affiliation(E) | 1) Tongji University, 2) Tongji University, 3) Tongji University, 4) Tongji University, 5) Tongji University, 6) Tongji University |
| Abstract(E) | GDI engine has gained much popularity in vehicle market with its high thermal efficiency. However, because of higher particulate emissions, it becomes harder for GDI engines to fulfill the iteration of emission regulations in various countries. As a result, Gasoline Particulate Filter (GPF) has received more and more attention and applications. It is important to study the particulate emission and GPF performance especially for transient cycles. With a self-designed test rig with burner named Exhaust Gas Simulator, a transient control strategy to simulate the exhaust state of the WLTC cycle has been developed achieving a fast and stable ash accumulation rate. Three levels of ash loading, in terms of 0g/L, 5g/L and 35g/L, were accumulated on respective GPF for different aging degrees with this test rigs. The effect of ash loading on GPF performance was investigated. A Cambustion DMS500 was used to record the particulate emission before and after the GPFs, and then the particulate size distribution, capture efficiency of GPF were analyzed. The results show that with this test rig and control strategy, an ash accumulation rate of 5g/L can be achieved. In terms of particle size distribution, particle concentration before and after GPF mainly presents a bimodal distribution of nuclear modal particles and aggregated particles. In terms of GPF capture efficiency, the average capture efficiency in the three groups is above 99% for particles with size ranging from 5 to 1000nm. In terms of average particle size before and after GPF capture, the capture efficiency of new and slightly aged GPF for small particle size (5-20nm) is higher than that of large particle size (larger than 20nm). However, the GPF with higher aging degree has a higher capture efficiency for large particle size (greater than 20nm) than small particle size (5-20nm). |
