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Catalyst Technologies for Gasoline Engines with Respect to CO 2 Reduction
Technical Paper
2011-26-0027
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SIAT 2011
Language:
English
Abstract
Besides the further reduction of the harmful gaseous emissions
(HC, CO and NOx) to reach upcoming emission limits, the discussion
on lowering the CO₂ emissions is omnipresent. From engine
development point of view further optimization of the
stoichiometric-operated gasoline engine as well as the introduction
of lean-operated engines are the main development trend.
The emission control system can support the engine development
by dedicated catalyst technologies as presented in this paper.
A new family of TWC technologies offers to tune the catalyst
system to the engine performance and the back pressure requirement
- which helps to reduce CO₂ emissions. In addition these
technologies show improved performance in HC, CO, NOx light-off,
and in CO and NOx conversions under dynamic conditions - this again
can positively impact the CO₂ emissions as less harsh heating
strategies for cold start is required.
By further optimization of the aftertreatment system with regard
to system integration (catalyst volume, precious metal
distribution, calibration) a considerable reduction in precious
metal is realized with improved overall performance when compared
to the current series applications.
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Citation
Mueller, W., Richter, J., Schmidt, M., Roesch, M. et al., "Catalyst Technologies for Gasoline Engines with Respect to CO2 Reduction," SAE Technical Paper 2011-26-0027, 2011, https://doi.org/10.4271/2011-26-0027.Also In
References
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