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Analysis of a high pressure diesel spray at high pressure and temperature environment conditions

This paper illustrates the results of an experimental characterization of a high pressure diesel spray injected by a common rail (CR) injection system both under non-evaporative and evaporative conditions. Tests have been made injecting the fuel with a single hole injector having a diameter of 0.18...

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Main Authors: Kidoguchi, Yoshiyuki, Nada, Yuzuru, Yano, Takayuki, Nakagiri, Misato
Format: Article
Language:English
Published: Japan Society of Mechanical Engineers 2013
Subjects:
TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines
TP315-360 Fuel
Online Access:http://eprints.uthm.edu.my/3912/1/AJ%202017%20%28531%29.pdf
http://eprints.uthm.edu.my/3912/
https://dx.doi.org/10.1299/kikaib.79.399
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spelling my.uthm.eprints.39122021-11-22T06:51:21Z http://eprints.uthm.edu.my/3912/ Analysis of a high pressure diesel spray at high pressure and temperature environment conditions Kidoguchi, Yoshiyuki Nada, Yuzuru Yano, Takayuki Nakagiri, Misato TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines TP315-360 Fuel This paper illustrates the results of an experimental characterization of a high pressure diesel spray injected by a common rail (CR) injection system both under non-evaporative and evaporative conditions. Tests have been made injecting the fuel with a single hole injector having a diameter of 0.18 mm with L/D=5.56. The fuel has been sprayed at 60, 90 and 120 MPa, with an ambient pressure ranging between 1.2 to 5.0 MPa. The spray evolution has been investigated, by the Mie scattering technique, illuminating the fuel jet and acquiring single shot images by a CCD camera. Tests under non-evaporative conditions have been carried out in an optically accessible high pressure vessel filled with inert gas (N2) at diesel-like density conditions. The instantaneous fuel injection rate, obtained with a time resolution of 10 microseconds, has been also evaluated by an AVL Fuel Meter working on the Bosch Tube principle. Tests for the evaporative conditions have been conducted on a crank-case scavenged single cylinder 2-stroke direct injection Diesel engine at the rotational speed of 500 rpm. The engine provides a wide optical access and the gas velocity within the combustion chamber is low enough to assume that the fuel is injected under quiescent conditions as those reproduced for the experiments under high density gas chamber. Spray penetration and cone angle have been estimated at the same operative conditions as for the non-evaporative ones. Results have showed that the tip penetration, obtained by digital post-processing of the spray image sequence, increases with the injection time under non-evaporative conditions whereas, under evaporative conditions, it reaches a maximum early during the injection and remains constant or slightly decreases at later time up to the start of combustion. The cone angle, estimated under evaporative conditions, has given a decreasing profile along the injection interval. Applying the jet theory to a simplified model of fuel spray, the evaporated fuel mass has been estimated at the same gas density as that under non evaporative tests. Japan Society of Mechanical Engineers 2013 Article PeerReviewed text en http://eprints.uthm.edu.my/3912/1/AJ%202017%20%28531%29.pdf Kidoguchi, Yoshiyuki and Nada, Yuzuru and Yano, Takayuki and Nakagiri, Misato (2013) Analysis of a high pressure diesel spray at high pressure and temperature environment conditions. Transactions of The Japan Society of Mechanical Engineers Series B, 79 (799). pp. 172-178. ISSN 0387-5016 https://dx.doi.org/10.1299/kikaib.79.399
institution Universiti Tun Hussein Onn Malaysia
building UTHM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider Universiti Tun Hussein Onn Malaysia
content_source UTHM Institutional Repository
url_provider http://eprints.uthm.edu.my/
language English
topic TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines
TP315-360 Fuel
spellingShingle TJ751-805 Miscellaneous motors and engines Including gas, gasoline, diesel engines
TP315-360 Fuel
Kidoguchi, Yoshiyuki
Nada, Yuzuru
Yano, Takayuki
Nakagiri, Misato
Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
description This paper illustrates the results of an experimental characterization of a high pressure diesel spray injected by a common rail (CR) injection system both under non-evaporative and evaporative conditions. Tests have been made injecting the fuel with a single hole injector having a diameter of 0.18 mm with L/D=5.56. The fuel has been sprayed at 60, 90 and 120 MPa, with an ambient pressure ranging between 1.2 to 5.0 MPa. The spray evolution has been investigated, by the Mie scattering technique, illuminating the fuel jet and acquiring single shot images by a CCD camera. Tests under non-evaporative conditions have been carried out in an optically accessible high pressure vessel filled with inert gas (N2) at diesel-like density conditions. The instantaneous fuel injection rate, obtained with a time resolution of 10 microseconds, has been also evaluated by an AVL Fuel Meter working on the Bosch Tube principle. Tests for the evaporative conditions have been conducted on a crank-case scavenged single cylinder 2-stroke direct injection Diesel engine at the rotational speed of 500 rpm. The engine provides a wide optical access and the gas velocity within the combustion chamber is low enough to assume that the fuel is injected under quiescent conditions as those reproduced for the experiments under high density gas chamber. Spray penetration and cone angle have been estimated at the same operative conditions as for the non-evaporative ones. Results have showed that the tip penetration, obtained by digital post-processing of the spray image sequence, increases with the injection time under non-evaporative conditions whereas, under evaporative conditions, it reaches a maximum early during the injection and remains constant or slightly decreases at later time up to the start of combustion. The cone angle, estimated under evaporative conditions, has given a decreasing profile along the injection interval. Applying the jet theory to a simplified model of fuel spray, the evaporated fuel mass has been estimated at the same gas density as that under non evaporative tests.
format Article
author Kidoguchi, Yoshiyuki
Nada, Yuzuru
Yano, Takayuki
Nakagiri, Misato
author_facet Kidoguchi, Yoshiyuki
Nada, Yuzuru
Yano, Takayuki
Nakagiri, Misato
author_sort Kidoguchi, Yoshiyuki
title Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
title_short Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
title_full Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
title_fullStr Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
title_full_unstemmed Analysis of a high pressure diesel spray at high pressure and temperature environment conditions
title_sort analysis of a high pressure diesel spray at high pressure and temperature environment conditions
publisher Japan Society of Mechanical Engineers
publishDate 2013
url http://eprints.uthm.edu.my/3912/1/AJ%202017%20%28531%29.pdf
http://eprints.uthm.edu.my/3912/
https://dx.doi.org/10.1299/kikaib.79.399
_version_ 1738581182031855616
score 13.211869

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