Evaluation and Analysis of DPF Regeneration Strategy under Real-World Driving of an Ultra-Low NOx Tier 3 Light-Duty Diesel Vehicle
2022-01-0658
03/29/2022
- Content
- The diesel particulate filter (DPF) is currently the most effective particulate emissions control tool for both light and heavy-duty diesel engines. However, to maintain high filtration efficiency for particulate emissions reduction, the DPF must be periodically regenerated by using high temperatures to burn off accumulated soot inside the DPF. This paper is focused on two aspects of this challenge, which are how the DPF regeneration is controlled in real-world driving and the impacts of DPF regeneration on NOx emissions controls and fuel economy. The vehicle tested was a model year (MY) 2018 class-2 light-duty (LDT2) General Motors Diesel pickup truck. Engine and DPF regeneration control parameters, SCR control parameters, and real-time NOx and engine-out soot emissions were measured and analyzed over extensive urban and highway driving.
- Citation
- Huang, R., "Evaluation and Analysis of DPF Regeneration Strategy under Real-World Driving of an Ultra-Low NOx Tier 3 Light-Duty Diesel Vehicle," SAE Technical Paper 2022-01-0658, 2022, .