2026-09-24T14:37:55Zhttps://dspace.mit.edu/server/oai/requestoai:dspace.mit.edu:1721.1/93462022-01-13T07:54:36Zcom_1721.1_7582com_1721.1_7581col_1721.1_131023
Simone Hochgreb.
O'Sullivan, Cornelius (Cornelius Patrick), 1974-
Massachusetts Institute of Technology. Dept. of Mechanical Engineering.
Massachusetts Institute of Technology. Department of Mechanical Engineering
2005-08-22T20:29:30Z
2005-08-22T20:29:30Z
1999
1999
http://hdl.handle.net/1721.1/9346
44421003
Thesis (S.M.)--Massachusetts Institute of Technology, Dept. of Mechanical Engineering, 1999.
Includes bibliographical references (p. 89-91).
Driven in part by concerns regarding global wanning, there is a clear trend towards increased usage of compression ignition vehicles running on diesel fuel. Use of diesel fuel has a downside, namely relatively high oxides of nitrogen (NOx) and particulate matter (PM) emissions. Emulsified fuel is a mixture of water and diesel fuel. Quantum Energy Technologies Corporation (QET) have developed nanoemulsified fuels that contain water clusters in the nanometer size range. The main benefits claimed for these fuels are reduced emissions of PM and NOx without any decrease in engine performance levels compared to conventional diesel fuels. This work investigates these benefits by running different base diesels and nanoemulsions with varying water content in a single cylinder direct injection Ricardo Hydra engine. The effect of water addition on the base diesel is modeled using a previously verified model of the test engine. The experimental and modeling results are compared to published results for conventional microemulsions. There is no decrease in indicated fuel conversion efficiency for the nanoemulsions. Fer a 9% water nanoemulsion specific NOx emissions are reduced by l 3 - 20% and specific PM emissions are reduced by 15 - 20% compared to the base diesel. However, these fuels do not exhibit any significant emissions improvement over conventional microemulsions.
by Cornelius O'Sullivan.
S.M.
118, [4] p.
6465640 bytes
6465398 bytes
application/pdf
application/pdf
eng
Massachusetts Institute of Technology
M.I.T. theses are protected by copyright. They may be viewed from this source for any purpose, but reproduction or distribution in any format is prohibited without written permission. See provided URL for inquiries about permission.
http://dspace.mit.edu/handle/1721.1/7582
Mechanical Engineering.
Investigation of the NOx and PM emissions from a diesel engine operating on nanoemulsified fuels
Investigation of the oxides of nitrogen and particulate matter emissions from a diesel engine operating on nanoemulsified fuels
Thesis
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<Abstract>Driven in part by concerns regarding global wanning, there is a clear trend towards increased usage of compression ignition vehicles running on diesel fuel. Use of diesel fuel has a downside, namely relatively high oxides of nitrogen (NOx) and particulate matter (PM) emissions. Emulsified fuel is a mixture of water and diesel fuel. Quantum Energy Technologies Corporation (QET) have developed nanoemulsified fuels that contain water clusters in the nanometer size range. The main benefits claimed for these fuels are reduced emissions of PM and NOx without any decrease in engine performance levels compared to conventional diesel fuels. This work investigates these benefits by running different base diesels and nanoemulsions with varying water content in a single cylinder direct injection Ricardo Hydra engine. The effect of water addition on the base diesel is modeled using a previously verified model of the test engine. The experimental and modeling results are compared to published results for conventional microemulsions. There is no decrease in indicated fuel conversion efficiency for the nanoemulsions. Fer a 9% water nanoemulsion specific NOx emissions are reduced by l 3 - 20% and specific PM emissions are reduced by 15 - 20% compared to the base diesel. However, these fuels do not exhibit any significant emissions improvement over conventional microemulsions.</Abstract>
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