Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method

Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method

Utilization of compressed natural gas in transportation is driven by factors such as stringent emission level its competitive price. The characteristics of injector used to deliver compressed natural gas (CNG) are critical to the success of direct injection spark ignition engine application. The inj...

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Main Authors: Zahari, Taha, Mohd Fadzil, Abdul Rahim, R., Mamat
Format: Conference or Workshop Item
Language:English
Published: The Institute of Physics 2017
Subjects:
TJ Mechanical engineering and machinery
TL Motor vehicles. Aeronautics. Astronautics
Online Access:http://umpir.ump.edu.my/id/eprint/19863/
http://umpir.ump.edu.my/id/eprint/19863/
http://umpir.ump.edu.my/id/eprint/19863/1/Taha_2017_IOP_Conf._Ser.%253A_Mater._Sci._Eng._257_012057.pdf
id ump-19863
recordtype eprints
spelling ump-198632018-02-27T07:03:18Z http://umpir.ump.edu.my/id/eprint/19863/ Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method Zahari, Taha Mohd Fadzil, Abdul Rahim R., Mamat TJ Mechanical engineering and machinery TL Motor vehicles. Aeronautics. Astronautics Utilization of compressed natural gas in transportation is driven by factors such as stringent emission level its competitive price. The characteristics of injector used to deliver compressed natural gas (CNG) are critical to the success of direct injection spark ignition engine application. The injection characteristics affect mostly the mixture formation and combustion processes. Thus measurement of injector flow rate which is used in high pressure direct injection compressed natural gas engine (HPDI-CNG) is carried out in two cases were done. The first case investigated the effect of CNG injection pressure and the second case evaluate the effect of pulsewidth of injection duration on injector mass flow rate. An analytical model was developed to investigate the relationship between the injection parameter which ultimately affect the mass flow rate of the injector. The injector was operated in choked condition in both the experiments and simulation studies. The selected pressure ratios used in the study exceeded the critical pressure ratio for the gas. In case 1, it was shown that mass flow rate through the injector is affected by injection pressure linearly. In case 2, it was also shown that average mass flow rate at short injection durations which are commonly used in engine maps is lower than recorded in Case 1. The injector model able to predict the trend of mass flow rate at different injection pressure and injection duration with justified discrepancy. The Institute of Physics 2017 Conference or Workshop Item NonPeerReviewed application/pdf en cc_by http://umpir.ump.edu.my/id/eprint/19863/1/Taha_2017_IOP_Conf._Ser.%253A_Mater._Sci._Eng._257_012057.pdf Zahari, Taha and Mohd Fadzil, Abdul Rahim and R., Mamat (2017) Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method. In: IOP Conference Series: Materials Science and Engineering, 4th International Conference on Mechanical Engineering Research (ICMER2017), 1-2 August 2017 , Kuantan, Pahang, Malaysia. pp. 1-20., 257 (012057). ISSN 1757-8981 https://doi.org/10.1088/1757-899X/257/1/012057
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
TL Motor vehicles. Aeronautics. Astronautics
spellingShingle TJ Mechanical engineering and machinery
TL Motor vehicles. Aeronautics. Astronautics
Zahari, Taha
Mohd Fadzil, Abdul Rahim
R., Mamat
Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
description Utilization of compressed natural gas in transportation is driven by factors such as stringent emission level its competitive price. The characteristics of injector used to deliver compressed natural gas (CNG) are critical to the success of direct injection spark ignition engine application. The injection characteristics affect mostly the mixture formation and combustion processes. Thus measurement of injector flow rate which is used in high pressure direct injection compressed natural gas engine (HPDI-CNG) is carried out in two cases were done. The first case investigated the effect of CNG injection pressure and the second case evaluate the effect of pulsewidth of injection duration on injector mass flow rate. An analytical model was developed to investigate the relationship between the injection parameter which ultimately affect the mass flow rate of the injector. The injector was operated in choked condition in both the experiments and simulation studies. The selected pressure ratios used in the study exceeded the critical pressure ratio for the gas. In case 1, it was shown that mass flow rate through the injector is affected by injection pressure linearly. In case 2, it was also shown that average mass flow rate at short injection durations which are commonly used in engine maps is lower than recorded in Case 1. The injector model able to predict the trend of mass flow rate at different injection pressure and injection duration with justified discrepancy.
format Conference or Workshop Item
author Zahari, Taha
Mohd Fadzil, Abdul Rahim
R., Mamat
author_facet Zahari, Taha
Mohd Fadzil, Abdul Rahim
R., Mamat
author_sort Zahari, Taha
title Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
title_short Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
title_full Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
title_fullStr Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
title_full_unstemmed Injection Characteristics Study of High Pressure Direct Injector for Compressed Natural Gas (CNG) using Experimental and Analytical Method
title_sort injection characteristics study of high pressure direct injector for compressed natural gas (cng) using experimental and analytical method
publisher The Institute of Physics
publishDate 2017
url http://umpir.ump.edu.my/id/eprint/19863/
http://umpir.ump.edu.my/id/eprint/19863/
http://umpir.ump.edu.my/id/eprint/19863/1/Taha_2017_IOP_Conf._Ser.%253A_Mater._Sci._Eng._257_012057.pdf
first_indexed 2023-09-18T22:28:28Z
last_indexed 2023-09-18T22:28:28Z
_version_ 1777416125963829248

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