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http://dx.doi.org/10.5916/jkosme.2011.35.4.460

Optical Observation of Cavitation Phenomena in Diesel Fuel Injection Pumps  

Ryu, Seung-Hyup (현대중공업 제품개발연구소 시험평가연구실)
Kim, Dong-Hun (현대중공업 제품개발연구소 엔진연구실)
Kim, Byung-Seok (현대중공업 제품개발연구소 엔진연구실)
Park, Tae-Hyung (현대중공업 제품개발연구소 엔진연구실)
Abstract
Cavitation phenomena during the spill process of the Bosch type fuel injection pump for medium-speed diesel engine were investigated by optical observations. Typically, these phenomena can cause a surface damage with material removal or round-off at the plunger and barrel port etc., and may shorten their expected life time. The images, which were recorded with high speed CCD camera and borescope, show that the plunger damage is mainly affected by fountain-like cavitation generated before the end of delivery. And the damages of barrel port and deflector are caused by jet-type cavitation generated after end of delivery.
Keywords
Fuel injection pump; Cavitation; Flow visualization; Diesel engine;
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  • Reference
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