Modeling the Catalytic Performance of Coated Gasoline Particulate Filters under Various Operating Conditions

Abstract

Coated gasoline particulate filters (cGPFs) can reduce gaseous as well as particulate emissions with the same device. However, their more complex design compared to conventional open monoliths requires accurate models in the development phase. We therefore present a new global kinetic model for cGPFs considering standard three-way catalyst reactions and extend it with the impact of lean–rich cycling, referred to as dithering. Submodels are introduced for the oxygen storage and for the extent of oxidation of the active centers. Therefore, the model captures the enhanced conversion of the catalyst under various dithering as well as steady-state conditions. Several steady-state and transient experiments were conducted on a specially equipped dynamic engine test bench in order to calibrate the approach. The proposed model accurately predicts the tailpipe emissions released in a worldwide harmonized light vehicles test procedure driving cycle that is not part of the original calibration data.

Applying 3D X-ray Microscopy to Model Coated Gasoline Particulate Filters under Practical Driving Conditions

“…It is based on a flow model of the cGPF, explained first in the Flow Model section. Further details can be found in refs and .…”

Soot Distribution Characteristics and Its Influence Factors in Burner-Type Regeneration Diesel Particulate Filter

“…With the rapid increase in car ownership, automobile emission pollutants have become a major source of pollution in the environment [1][2][3]. At present, various emission control methods [4][5][6], such as alternative fuels (such as hydrogen, ammonia, ethanol [7], and biodiesel [8]) and electric vehicle technologies are used to reduce environmental pollution [9] and to comply with the increasingly stringent emission standards. Since the diesel engine has low fuel consumption, strong power performance, and reliable performance, it has dominated the market of heavy-duty vehicles and has gradually become the power source for light-duty vehicles.…”