Fuel injection characteristics of diesel-stimulated natural gas combustion

M. Mbarawa, B. E. Milton, R. T. Casey, H. Miao

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


Although dual-fuel (DF) engines using a low cetane number primary fuel such as natural gas (NG) ignited by a pilot diesel spray have been the subject of much investigation over years, there are still many unknown problems related to the fundamental combustion process of two fuels. In this work, a quiescent constant volume combustion bomb and a 3-D numerical model have been used to study the effects of injection nozzle characteristics on the combustion of pre-mixed NG/air with pilot distillate spray. Experimental tests were conducted on combustion process of pre-mixed natural gas/air with pilot injection pressure of 30 and 20 MPa with a 4 hole injector, and also with injector nozzle of 8 and 4 holes. The global results obtained from computations compared well with the experimental results.

Original languageEnglish
Pages (from-to)1359-1371
Number of pages13
JournalInternational Journal of Energy Research
Issue number15
Publication statusPublished - 1 Dec 1999
Externally publishedYes


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