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RISS 인기검색어
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- 저자 : Saeed Javan (검색결과 1 건)
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Experimental study of fine center electrode spark plug in Bi-fuel engines
Saeed Javan,Syed Shahabodin Alaviyoun,Seyed Vahid Hosseini,F. OMMI 대한기계학회 2014 JOURNAL OF MECHANICAL SCIENCE AND TECHNOLOGY Vol.28 No.3
In the present work, the erosion of platinum fine center electrode spark plugs and conventional nickel plugs are investigated in a gasolineand natural gas bi-fuel engine. The effect of electrode erosion is evaluated by comparing the required ignition voltage and cold startability of the different plug designs. After durability tests, platinum fine center electrode plug had insignificant electrode erosion andnegligible gap growth; whereas the nickel plug had notable erosion and gap growth. There was no detectable side sparking for fine centerelectrode plugs. In terms of performance, the required ignition voltage of fine center electrode plug was lower than conventional sparkplug. Also, results of a cold start test demonstrated that the starting time of the engine with fine electrode plugs was lower than conventionalspark plugs. The surface of electrodes was studied by the scanning electron microscope and the energy dispersive X-ray spectroscopytechniques. Cracking and peeling was observed on the surface of the nickel conventional electrodes, but not on the surface of theplatinum fine electrodes. These tests show that platinum fine center electrodes could be suitable for gasoline/natural gas bi-fuel engines tomeet long lifetime demand.
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