Comparative analysis of performance and emission of a homogenous combustion compressed natural-gas direct injection engine

Saad Aljamali, Shahrir Abdullah, Wan Mohd Faizal Wan Mahmood, Yusoff Ali

Research output: Contribution to journalArticle

Abstract

This study presents experimental results of a homogenous combustion compressed natural-gas direct injection (CNGDI) engine with 1596 cm3 capacity, 4-cylinder spark- ignited with a compression ratio of 14. These results were compared with previous simulation results using Star CD, single cylinder CNGDI research experiment (CNGDI- SCRE (4x)) and port injection gasoline engine (CNG-BI, Gasoline-PI) experiment. The engine test was carried out at engine speed ranging from 1500 (RPM) to 4000 (RPM) with 500 (RPM) increments. The engine control unit (ECU) was using Motec 800. Modify the end of injection (EOI) to 120 BTDC. Performance and emission were recorded under wide-open throttle using an engine control system and a portable exhaust gas analyzer. Results show that power increases from 13.18 (KW) to 53 (KW). By comparing the power in CNGDI with the (Gasoline-PI, CNG-BI, simulation), it is increased (18%, 57%, 16%), respectively. The torque also increases from 83.9 (Nm) to 126.8 (Nm) in CNGDI, with high same percentage compared to the (Gasoline-PI, CNG-BI, simulation), respectively. For CNGDI, the brake specific fuel consumption (BSFC), the brake mean effective pressure (BMEP) is recorded. This study also shows the fuel conversion efficiency (ηf), volumetric efficiency (ηv) and lambda (λ). Furthermore, CO, CO2 and O2 are recorded. The study shows low CO emission in CNGDI in all speeds, but CO2 shows low emission in low speed and high emission in high speed compared to (Gasoline-PI, CNG-BI).

Original languageEnglish
Pages (from-to)173-183
Number of pages11
JournalInternational Journal of Mechanical and Mechatronics Engineering
Volume16
Issue number1
Publication statusPublished - 2016

Fingerprint

Compressed natural gas
Direct injection
Engines
Gasoline
Engine cylinders
Brakes
Exhaust gases
Electric sparks
Fuel consumption
Conversion efficiency
Stars
Torque
Experiments
Control systems

Keywords

  • Compressed natural gas
  • Direct injection
  • Emission
  • Homogenous piston
  • Performance

ASJC Scopus subject areas

  • Engineering(all)

Cite this

@article{685971b5f4474ba3a621b453a60d62e4,
title = "Comparative analysis of performance and emission of a homogenous combustion compressed natural-gas direct injection engine",
abstract = "This study presents experimental results of a homogenous combustion compressed natural-gas direct injection (CNGDI) engine with 1596 cm3 capacity, 4-cylinder spark- ignited with a compression ratio of 14. These results were compared with previous simulation results using Star CD, single cylinder CNGDI research experiment (CNGDI- SCRE (4x)) and port injection gasoline engine (CNG-BI, Gasoline-PI) experiment. The engine test was carried out at engine speed ranging from 1500 (RPM) to 4000 (RPM) with 500 (RPM) increments. The engine control unit (ECU) was using Motec 800. Modify the end of injection (EOI) to 120 BTDC. Performance and emission were recorded under wide-open throttle using an engine control system and a portable exhaust gas analyzer. Results show that power increases from 13.18 (KW) to 53 (KW). By comparing the power in CNGDI with the (Gasoline-PI, CNG-BI, simulation), it is increased (18{\%}, 57{\%}, 16{\%}), respectively. The torque also increases from 83.9 (Nm) to 126.8 (Nm) in CNGDI, with high same percentage compared to the (Gasoline-PI, CNG-BI, simulation), respectively. For CNGDI, the brake specific fuel consumption (BSFC), the brake mean effective pressure (BMEP) is recorded. This study also shows the fuel conversion efficiency (ηf), volumetric efficiency (ηv) and lambda (λ). Furthermore, CO, CO2 and O2 are recorded. The study shows low CO emission in CNGDI in all speeds, but CO2 shows low emission in low speed and high emission in high speed compared to (Gasoline-PI, CNG-BI).",
keywords = "Compressed natural gas, Direct injection, Emission, Homogenous piston, Performance",
author = "Saad Aljamali and Shahrir Abdullah and {Wan Mahmood}, {Wan Mohd Faizal} and Yusoff Ali",
year = "2016",
language = "English",
volume = "16",
pages = "173--183",
journal = "International Journal of Mechanical and Mechatronics Engineering",
issn = "2227-2771",
publisher = "IJENS Publishers",
number = "1",

}

TY - JOUR

T1 - Comparative analysis of performance and emission of a homogenous combustion compressed natural-gas direct injection engine

AU - Aljamali, Saad

AU - Abdullah, Shahrir

AU - Wan Mahmood, Wan Mohd Faizal

AU - Ali, Yusoff

PY - 2016

Y1 - 2016

N2 - This study presents experimental results of a homogenous combustion compressed natural-gas direct injection (CNGDI) engine with 1596 cm3 capacity, 4-cylinder spark- ignited with a compression ratio of 14. These results were compared with previous simulation results using Star CD, single cylinder CNGDI research experiment (CNGDI- SCRE (4x)) and port injection gasoline engine (CNG-BI, Gasoline-PI) experiment. The engine test was carried out at engine speed ranging from 1500 (RPM) to 4000 (RPM) with 500 (RPM) increments. The engine control unit (ECU) was using Motec 800. Modify the end of injection (EOI) to 120 BTDC. Performance and emission were recorded under wide-open throttle using an engine control system and a portable exhaust gas analyzer. Results show that power increases from 13.18 (KW) to 53 (KW). By comparing the power in CNGDI with the (Gasoline-PI, CNG-BI, simulation), it is increased (18%, 57%, 16%), respectively. The torque also increases from 83.9 (Nm) to 126.8 (Nm) in CNGDI, with high same percentage compared to the (Gasoline-PI, CNG-BI, simulation), respectively. For CNGDI, the brake specific fuel consumption (BSFC), the brake mean effective pressure (BMEP) is recorded. This study also shows the fuel conversion efficiency (ηf), volumetric efficiency (ηv) and lambda (λ). Furthermore, CO, CO2 and O2 are recorded. The study shows low CO emission in CNGDI in all speeds, but CO2 shows low emission in low speed and high emission in high speed compared to (Gasoline-PI, CNG-BI).

AB - This study presents experimental results of a homogenous combustion compressed natural-gas direct injection (CNGDI) engine with 1596 cm3 capacity, 4-cylinder spark- ignited with a compression ratio of 14. These results were compared with previous simulation results using Star CD, single cylinder CNGDI research experiment (CNGDI- SCRE (4x)) and port injection gasoline engine (CNG-BI, Gasoline-PI) experiment. The engine test was carried out at engine speed ranging from 1500 (RPM) to 4000 (RPM) with 500 (RPM) increments. The engine control unit (ECU) was using Motec 800. Modify the end of injection (EOI) to 120 BTDC. Performance and emission were recorded under wide-open throttle using an engine control system and a portable exhaust gas analyzer. Results show that power increases from 13.18 (KW) to 53 (KW). By comparing the power in CNGDI with the (Gasoline-PI, CNG-BI, simulation), it is increased (18%, 57%, 16%), respectively. The torque also increases from 83.9 (Nm) to 126.8 (Nm) in CNGDI, with high same percentage compared to the (Gasoline-PI, CNG-BI, simulation), respectively. For CNGDI, the brake specific fuel consumption (BSFC), the brake mean effective pressure (BMEP) is recorded. This study also shows the fuel conversion efficiency (ηf), volumetric efficiency (ηv) and lambda (λ). Furthermore, CO, CO2 and O2 are recorded. The study shows low CO emission in CNGDI in all speeds, but CO2 shows low emission in low speed and high emission in high speed compared to (Gasoline-PI, CNG-BI).

KW - Compressed natural gas

KW - Direct injection

KW - Emission

KW - Homogenous piston

KW - Performance

UR - http://www.scopus.com/inward/record.url?scp=84960362482&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84960362482&partnerID=8YFLogxK

M3 - Article

VL - 16

SP - 173

EP - 183

JO - International Journal of Mechanical and Mechatronics Engineering

JF - International Journal of Mechanical and Mechatronics Engineering

SN - 2227-2771

IS - 1

ER -