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Torque and power of CNGDI engine with two different piston crown shapes


Hassan, Mohd Khair and Aris, Ishak and Zainuddin, Khairul Nizam and Nik Othman, Nik Anis Alina (2009) Torque and power of CNGDI engine with two different piston crown shapes. Journal of Applied Sciences Research, 5 (8). pp. 949-954. ISSN 1816-157X


This paper presents the experimental test results of single cylinder high compression engine fuelled with compressed natural gas. The engine uses central direct injection with high pressure injector system which is known as Compressed Natural Gas Direct Injection (CNGDI)engine. This initial experiment on a single cylinder CNGDI engine is to investigate the feasibility of the CNGDI engine with different piston crown shape. The performance of two piston crown shapes for(i)homogeneous(ii)stratified combustion was investigated. The start of injection(SOI) timing for each piston was varied between 1200 before top dead centre (bTDC) to 2200 bT DC to study it combustion response at various engine speed. SOI laid between 1200 bT DC to 1800 bT DC, which produced a constant power and torque. The experimental results have shown;(i) ignition timing has to be advanced and(ii) the best injection timing is at 1200 bT DC to 1800 bT DC to achieve a good performance. For homogeneous charge combustion operation engine, the injection timing was set at early of compression stroke to ensure the better fuel/air mixing.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
Institute of Advanced Technology
Publisher: INSInet Publications
Keywords: CNGDI engine; High compression engine; Single cylinder CNGDI
Depositing User: Fatimah Zahrah @ Aishah Amran
Date Deposited: 30 Dec 2013 03:53
Last Modified: 31 Oct 2019 06:24
URI: http://psasir.upm.edu.my/id/eprint/17438
Statistic Details: View Download Statistic

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