Using a Diesel-Gasoline Blend to Reduce NOx and Smoke Emissions and Improve High-Efficiency Range of LTC Engine

.

Slightly increased EGR reduces NO_x emissions, extending dieseline
LTC to lighter loads without heavily deteriorated combustion
efficiency.

Within the context of the study, they found that intake boost poses opposing
effects on HC and CO emissions. Given an equivalence ratio, increased intake pressure results in reduced HC emissions because reduced ignition delay with intake boost restricts
the possibility of unburned fuel to enter the cold
boundary zones.

On the contrary, CO emissions increase
with intake pressure at high equivalence ratios because the
decreased bulk cylinder temperatures contribute to CO formation.

The University of Michigan/General Motors Collaborative Research Laboratory
in Engine Systems provided financial and technical support for the study.

Resources

• Dong Han, Andrew M. Ickes, Dennis N. Assanis, Zhen Huang and Stanislav V. Bohac (2010)
  Attainment and Load Extension of High-Efficiency Premixed Low-Temperature Combustion with Dieseline in a Compression Ignition Engine. Energy Fuels, Article ASAP doi: 10.1021/ef100269c