Evaluation of Time-Resolved Nano-Particle and THC Emissions of Wall-Guided GDI Engine

Paper #:
  • 2011-28-0022

Published:
  • 2011-10-06
Citation:
Choi, K., Kim, J., Ko, A., Myung, C. et al., "Evaluation of Time-Resolved Nano-Particle and THC Emissions of Wall-Guided GDI Engine," SAE Technical Paper 2011-28-0022, 2011, https://doi.org/10.4271/2011-28-0022.
Pages:
7
Abstract:
A nano-sized PM and THC emission characteristics were investigated according to the fuel injection strategy such as a pressure and timing in the GDI engine. On the part-load condition, the particulate emissions exhibited a strong sensitivity to the injection timing. The fuel injection pressure also had a great association with the nano-particles and THC. A size of PM exhausted from the GDI engine located near 10nm on the part-load. In contrast, accumulation mode particles within 60 - 80nm mainly exhausted during the cold transient start phase. Increment of fuel injection pressure positively affected on the nano-particle and THC emissions during the start of the engine, as well.
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