Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine

This paper presents a description of the time-averaged heat transfer in a direct-injection hydrogen-fueled engine. A computer simulation of the overall heat transfer process within the in-cylinder was run. The experimental results were used to validate the adopted numerical model. One-dimensional ga...

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Main Authors:	M. M., Rahman, Khalaf, I. Hamada, A. Rashid, A. Aziz
Format:	Article
Language:	English
Published:	Elsevier 2012
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/1/Characterization_of_the_time-averaged_overall_heat_transfer_in_a_direct-injection_hydrogen-fueled_engine.pdf

id	ump-6288
recordtype	eprints
spelling	ump-62882018-01-24T07:13:37Z http://umpir.ump.edu.my/id/eprint/6288/ Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine M. M., Rahman Khalaf, I. Hamada A. Rashid, A. Aziz TJ Mechanical engineering and machinery This paper presents a description of the time-averaged heat transfer in a direct-injection hydrogen-fueled engine. A computer simulation of the overall heat transfer process within the in-cylinder was run. The experimental results were used to validate the adopted numerical model. One-dimensional gas dynamics were used to describe the flow and heat transfer in the components of the engine model. The engine model was simulated while varying the engine speed, equivalence ratio (φ), and start of injection (SOI) timing, respectively, as follows: 1800 ≤ rpm ≤ 5000, 0.2 ≤ φ ≤ 1.2, and 130° ≤ SOI ≤ 70° before top dead center. The baseline model of the hydrogen-fueled engine was verified through the experimental results, and reasonable agreement was achieved. The results show that the equivalence ratio has a significant impact on the time-averaged heat transfer characteristics. This is a unique behavior that appears in the case of hydrogen-fueled engines due to the wide flammability range. Delaying the injection timing caused different behavior of the time-averaged characteristics of heat transfer. This is an indication of remarkably poor combustion because there is insufficient time for fuel injection before the initiation of the combustion process. Elsevier 2012 Article PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/6288/1/Characterization_of_the_time-averaged_overall_heat_transfer_in_a_direct-injection_hydrogen-fueled_engine.pdf M. M., Rahman and Khalaf, I. Hamada and A. Rashid, A. Aziz (2012) Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine. International Journal of Hydrogen Energy, 38 (11). pp. 4816-4830. ISSN 0360-3199 http://dx.doi.org/10.1016/j.ijhydene.2013.01.136 DOI: 10.1016/j.ijhydene.2013.01.136
repository_type	Digital Repository
institution_category	Local University
institution	Universiti Malaysia Pahang
building	UMP Institutional Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery M. M., Rahman Khalaf, I. Hamada A. Rashid, A. Aziz Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
description	This paper presents a description of the time-averaged heat transfer in a direct-injection hydrogen-fueled engine. A computer simulation of the overall heat transfer process within the in-cylinder was run. The experimental results were used to validate the adopted numerical model. One-dimensional gas dynamics were used to describe the flow and heat transfer in the components of the engine model. The engine model was simulated while varying the engine speed, equivalence ratio (φ), and start of injection (SOI) timing, respectively, as follows: 1800 ≤ rpm ≤ 5000, 0.2 ≤ φ ≤ 1.2, and 130° ≤ SOI ≤ 70° before top dead center. The baseline model of the hydrogen-fueled engine was verified through the experimental results, and reasonable agreement was achieved. The results show that the equivalence ratio has a significant impact on the time-averaged heat transfer characteristics. This is a unique behavior that appears in the case of hydrogen-fueled engines due to the wide flammability range. Delaying the injection timing caused different behavior of the time-averaged characteristics of heat transfer. This is an indication of remarkably poor combustion because there is insufficient time for fuel injection before the initiation of the combustion process.
format	Article
author	M. M., Rahman Khalaf, I. Hamada A. Rashid, A. Aziz
author_facet	M. M., Rahman Khalaf, I. Hamada A. Rashid, A. Aziz
author_sort	M. M., Rahman
title	Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
title_short	Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
title_full	Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
title_fullStr	Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
title_full_unstemmed	Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine
title_sort	characterization of the time-averaged overall heat transfer in a direct-injection hydrogen-fueled engine
publisher	Elsevier
publishDate	2012
url	http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/ http://umpir.ump.edu.my/id/eprint/6288/1/Characterization_of_the_time-averaged_overall_heat_transfer_in_a_direct-injection_hydrogen-fueled_engine.pdf
first_indexed	2023-09-18T22:01:55Z
last_indexed	2023-09-18T22:01:55Z
_version_	1777414455335845888

Characterization Of The Time-Averaged Overall Heat Transfer In A Direct-Injection Hydrogen-Fueled Engine

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