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Emission Characteristics of Gasoline and LPG in a Spray-Guided-Type Direct Injection Engine
Technical Paper
2013-01-1323
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
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Language:
English
Abstract
Nowadays, automobile manufacturers are focusing on reducing
exhaust-gas emissions because of their harmful effects on humans
and the environment, such as global warming due to greenhouse
gases. Direct injection combustion is a promising technology that
can significantly improve fuel economy compared to conventional
port fuel injection spark ignition engines. However, previous
studies indicate that relatively high levels of nitrogen oxide
(NOx) emission were produced with gasoline fuel in a
spray-guided-type combustion system as a result of the stratified
combustion characteristics. Because a lean-burn engine cannot
employ a three-way catalyst, NOx emissions can be an
obstacle to commercializing a lean-burn direct injection
engine.
Liquefied petroleum gas (LPG) fuel was proposed as an
alternative for reducing NOx emission because it has a
higher vapor pressure than gasoline and decreases the local rich
mixture region as a result of an improved mixing process. The
combustion and emission characteristics of LPG and gasoline fuels
were compared in a multi-cylinder engine with a spray-guided-type
combustion system. A lower NOx emission value could be
achieved with a single injection of LPG, while the hydrocarbon
emissions increased.
Recommended Content
Authors
- Cheolwoong Park - Korea Institute of Machinery & Materials
- Yunseo Park - Korea Institute of Machinery & Materials
- Seungmook Oh - Korea Institute of Machinery & Materials
- Yonggyu Lee - Korea Institute of Machinery & Materials
- Tae Young Kim - Korea Institute of Machinery & Materials
- Hongsuk Kim - Korea Institute of Machinery & Materials
- Young Choi - Korea Institute of Machinery & Materials
- Kern-Yong Kang - Korea Institute of Machinery & Materials
Topic
Citation
Park, C., Park, Y., Oh, S., Lee, Y. et al., "Emission Characteristics of Gasoline and LPG in a Spray-Guided-Type Direct Injection Engine," SAE Technical Paper 2013-01-1323, 2013, https://doi.org/10.4271/2013-01-1323.Also In
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