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Volume 5, Issue 2(Suppl) Adv Automob Eng 2016
ISSN: 2167-7670, AAE an open access journal
Page 45
Notes:
Automobile 2016
December 01-02, 2016
conferenceseries.com
Automobile Engineering
December 01-02, 2016 Valencia, Spain
2nd International Conference and Exhibition on
Effect of cooling gallery on the piston temperature in a gasoline direction injection engine
Sangwook Han1, Hyunchul Kim1, Gyucheol Im2 and Younsul Yoo2
1Korea Automotive Technology Institute, Korea
2Dongsuh Federal Mogul, Korea
Significant efforts have been devoted to developing gasoline direct injection (GDI) engine technologies to meet the stringent
emission legislation. From the combustion point of view, combustion pressure is getting higher with higher injection pressure
and boosting pressure, which enhances the combustion process and thus reduces the emissions. This issue requires reinforcement
of the piston as well as improvement of cooling performance in the piston. The objective of this study was to investigate the effect
of cooling gallery on the piston temperature in a GDI engine. Prior to the engine experiment, parametric study on the oil jet was
performed in the test bench. In addition, oil targeting was optimized for the insurance of sufficient oil flow rate in the cooling gallery.
This was realized by optical piston and modified cylinder block. Two types of pistons, which are with and without cooling gallery,
were developed by Dongsuh Federal-Mogul in Korea. Furthermore, the research engine was modified to install the oil jet in the
cylinder block and inject the oil into the cooling gallery in the piston. The developed pistons were applied and evaluated in a GDI
engine. The piston temperature was measured by templug which is screw-type steel and is sensitive to temperature. It was confirmed
that the cooling gallery played an important role in determining the piston temperature. The piston with the cooling gallery resulted
in significantly lower temperature. It is believed that the optimization for the location and shape of cooling gallery should be needed
for better cooling performance.
Biography
Sangwook Han has completed his PhD from Korea Advanced Institute of Science and Technology. He is a Senior Researcher in the Clean Engine System R&D Center of
Korea Automotive Technology Institute, Korea. His research interests are in the engine combustion, vehicle thermal management system and automobile parts development
for the improvement of fuel economy.
Sangwook Han et al., Adv Automob Eng 2016, 5:2(Suppl)