Study on Performance of Diesel Engine Applied with Emulsified Diesel Fuel: The Influence of Fuel Injection Timing and Water Contents

2011-32-0606

11/08/2011

Event
Small Engine Technology Conference & Exposition
Authors Abstract
Content
The application of emulsified fuel for diesel engines is expected to reduce NOx and soot simultaneously. The purpose of this study is to clarify the influence of water content in emulsified fuel and fuel injection timing on diesel engine performance. The engine performance of emulsified fuel was compared with the water injection method. In the water injection test, water was injected to intake manifold and diesel fuel was directly injected into combustion chamber. Two emulsified fuels of which mixing ratio of water and emulsifier to diesel fuel were 15 and 30 vol.% were tested. Engine performance and exhaust gas emission of water injection method were almost similar to those of diesel fuel, so that water presented in combustion chamber had almost no influence on engine performance. Therefore, it can be considered that the micro explosion of fuel droplet enhanced the fuel atomization and mixing of fuel and air. When the fuel injection timing was retarded, the emulsified fuel could reduce NOx emission and smoke concentration however the thermal efficiency was deteriorated. The emulsified fuel could improve the brake thermal efficiency when the fuel injection timing was optimally adjusted, whereas NOx emission could not be reduced.
Meta TagsDetails
DOI
https://doi.org/10.4271/2011-32-0606
Pages
8
Citation
Iwai, M., Yoshida, K., Iijima, A., and Shoji, H., "Study on Performance of Diesel Engine Applied with Emulsified Diesel Fuel: The Influence of Fuel Injection Timing and Water Contents," SAE Technical Paper 2011-32-0606, 2011, https://doi.org/10.4271/2011-32-0606.
Additional Details
Publisher
Published
Nov 8, 2011
Product Code
2011-32-0606
Content Type
Technical Paper
Language
English