Development of CNG direct injection (CNGDI) clean fuel system for extra power in small engine

Yusoff Ali, Azhari Shamsudeen, Shahrir Abdullah, Wan Mohd Faizal Wan Mahmood

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

A new design of fuel system for CNG engine with direct injection (CNGDI) was developed for a demonstration project. The development of the fuel system was done on the engine with cylinder head modifications, for fuel injector and spark plug openings included in the new cylinder head. The piston was also redesigned for higher compression ratio. The fuel rails and the regulators are also designed for the direct injection system operating at higher pressure about 2.0 MPa. The control of the injection timing for the direct injectors are also controlled by the Electronic Control Unit specially designed for DI by another group project. The injectors are selected after testing with the various injection pressures and spray angles. For the best performance of the high-pressure system, selection is made from the tests on single cylinder research engine (SCRE). The components in the fuel system have to be of higher quality and complied with codes and standards to secure the safety of engine for high-pressure operation. The results of the CNGDI have shown that better power output is produced and better emissions were achieved compared to the aspirated CNG engine.

Original languageEnglish
Title of host publicationAIP Conference Proceedings
Pages541-549
Number of pages9
Volume1440
DOIs
Publication statusPublished - 2012
Event4th International Meeting of Advances in Thermofluids, IMAT 2011 - Melaka
Duration: 3 Oct 20114 Oct 2011

Other

Other4th International Meeting of Advances in Thermofluids, IMAT 2011
CityMelaka
Period3/10/114/10/11

Fingerprint

clean fuels
fuel systems
engines
injection
injectors
spark plugs
electronic control
compression ratio
regulators
rails
plugs
pistons
sprayers
safety
time measurement
output

Keywords

  • clean fuel system
  • CNG direct injection
  • extra power
  • Fuel system
  • small engine

ASJC Scopus subject areas

  • Physics and Astronomy(all)

Cite this

Development of CNG direct injection (CNGDI) clean fuel system for extra power in small engine. / Ali, Yusoff; Shamsudeen, Azhari; Abdullah, Shahrir; Wan Mahmood, Wan Mohd Faizal.

AIP Conference Proceedings. Vol. 1440 2012. p. 541-549.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Ali, Y, Shamsudeen, A, Abdullah, S & Wan Mahmood, WMF 2012, Development of CNG direct injection (CNGDI) clean fuel system for extra power in small engine. in AIP Conference Proceedings. vol. 1440, pp. 541-549, 4th International Meeting of Advances in Thermofluids, IMAT 2011, Melaka, 3/10/11. https://doi.org/10.1063/1.4704260
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