Direct In-cylinder Injection of Water into a PI Hydrogen Engine 2013-01-0227
Injecting liquid water into a fuel/air charge is a means to reduce NOx emissions. Such strategies are particularly important to hydrogen internal combustion engines, as engine performance (e.g., maximum load) can be limited by regulatory limits on NOx. Experiments were conducted in this study to quantify the effects of direct injection of water into the combustion chamber of a port-fueled, hydrogen IC engine. The effects of DI water injection on NOx emissions, load, and engine efficiency were determined for a broad range of water injection timing. The amount of water injected was varied, and the results were compared with baseline data where no water injection was used. Water injection was a very effective means to reduce NOx emissions. Direct injection of water into the cylinder reduced NOx emissions by 95% with an 8% fuel consumption penalty, and NOx emissions were reduced by 85% without any fuel consumption penalty.
Citation: Younkins, M., Wooldridge, M., and Boyer, B., "Direct In-cylinder Injection of Water into a PI Hydrogen Engine," SAE Technical Paper 2013-01-0227, 2013, https://doi.org/10.4271/2013-01-0227. Download Citation
Author(s):
Matthew Younkins, Margaret Wooldridge, Brad Boyer
Affiliated:
University of Michigan/Ford Motor Co.
Pages: 8
Event:
SAE 2013 World Congress & Exhibition
ISSN:
0148-7191
e-ISSN:
2688-3627
Related Topics:
Combustion chambers
Engine efficiency
Fuel consumption
Combustion and combustion processes
Water
Engine cylinders
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