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Fuel injection characteristics of diesel-stimulated natural gas combustion

✍ Scribed by M. Mbarawa; B. E. Milton; R. T. Casey; H. Miao

Publisher
John Wiley and Sons
Year
1999
Tongue
English
Weight
168 KB
Volume
23
Category
Article
ISSN
0363-907X

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✦ Synopsis

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 e!ects 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.

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✍ O.M.I. Nwafor; G. Rice πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 400 KB

In recent years, efforts have been directed towards environmentally freindly sources of alternative fuels for internal combustion engines. This paper investigates combustion characteristics and performance of natural gas in an unmodified compression ignition engine using diesel fuel pilot injection.