Effect of Hydrogen as an Additive on Lean Limit and Emissions of a Turbo Gasoline Direct Injection Engine 2015-01-1886
For gasoline engine, thermal efficiency can be improved by using lean burn. However, combustion instability occurs when gasoline engine is operated on lean condition. Hydrogen has features that can be used for improving combustion stability of gasoline engine. In this paper, an experimental study of hydrogen effect on lean limit was carried out using a four-cylinder 2.0L turbo gasoline direct injection engine. The engine torque was fixed at 110Nm on 1600RPM, 2000RPM and 2400RPM. The results showed that lean limit was extended and brake thermal efficiency was improved by hydrogen addition. Especially, at lower engine speed, the large improvement of lean limit was achieved. However, improvement of brake thermal efficiency was achieved at high speed. HC and CO2 emissions were decreased and NO emissions increased with hydrogen addition. CO emissions were slightly reduced with hydrogen addition.
Citation: Kim, J., Chun, K., Song, S., Baek, H. et al., "Effect of Hydrogen as an Additive on Lean Limit and Emissions of a Turbo Gasoline Direct Injection Engine," SAE Technical Paper 2015-01-1886, 2015, https://doi.org/10.4271/2015-01-1886. Download Citation
Author(s):
Joonsuk Kim, Kwang Min Chun, Soonho Song, Hong-Kil Baek, Seung Woo Lee
Affiliated:
Yonsei University, Hyundai Motor Company
Pages: 9
Event:
JSAE/SAE 2015 International Powertrains, Fuels & Lubricants Meeting
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Carbon monoxide
Lean burn engines
Hydrogen fuel
Combustion and combustion processes
Emissions
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