Experimental investigation of performance and emission of a sequential port injection natural gas engine

How Heoy Geok, Taib Iskandar Mohamad, Shahrir Abdullah, Yusoff Ali, Azhari Shamsudeen, Elvis Adril

Research output: Contribution to journalArticle

18 Citations (Scopus)

Abstract

This paper presents the results obtained from running a 1.5 Liter, 4-cylinder spark ignition engine with gasoline and compressed natural gas (CNG). Performance and emissions results were recorded under steady state operating conditions. The engine was converted to computer integrated CNG-gasoline bi-fuel operations by installing a sequential port injection CNG conversion system. An engine control system and portable exhaust gas analyzer were used for controlling engine operations and recording engine performance and emissions data. The engine was run at wide open throttle and constant speed ranging from 1500 to 5000 rpm with 500 rpm increment. On average, CNG yielded 22% less brake specific fuel consumption (BSFC) and 13% higher fuel conversion efficiency (FCE) compared to gasoline. It showed that CNG in sequential port injection system yielded improved BSFC and better FCE compared to carburettor system of the same engine as reported in earlier work (Aslam et al., 2006). However, the volumetric efficiency was reduced by 4-10% with CNG operation. Due to this, the brake torque, brake power and brake mean effective pressure of the engine were reduced by 8-16%. In terms of exhaust emissions, the results showed that HC, CO and CO2 were significantly reduced by 40-87%, 20-98% and 8-20% respectively compared to gasoline.

Original languageEnglish
Pages (from-to)204-214
Number of pages11
JournalEuropean Journal of Scientific Research
Volume30
Issue number2
Publication statusPublished - 2009

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gas engines
Natural Gas
Gas engines
natural gas
Compressed natural gas
engines
Experimental Investigation
Gasoline
Injection
Natural gas
engine
Engine
Brakes
injection
Engines
gasoline
Injections
energy use and consumption
Fuel consumption
fuel consumption

Keywords

  • Emission
  • Fuel economy
  • Natural gas
  • Performance
  • Spark ignition engine

ASJC Scopus subject areas

  • General

Cite this

Experimental investigation of performance and emission of a sequential port injection natural gas engine. / Geok, How Heoy; Mohamad, Taib Iskandar; Abdullah, Shahrir; Ali, Yusoff; Shamsudeen, Azhari; Adril, Elvis.

In: European Journal of Scientific Research, Vol. 30, No. 2, 2009, p. 204-214.

Research output: Contribution to journalArticle

Geok, How Heoy ; Mohamad, Taib Iskandar ; Abdullah, Shahrir ; Ali, Yusoff ; Shamsudeen, Azhari ; Adril, Elvis. / Experimental investigation of performance and emission of a sequential port injection natural gas engine. In: European Journal of Scientific Research. 2009 ; Vol. 30, No. 2. pp. 204-214.
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