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Study of the Thermal Bubble Inkjet Technology on Motorcycle Engine Application

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A new fuel injection concept called micro-pulsation fuel injection (μPFi) system had been installed in a commercial 4 stroke, 125 c.c. motorcycle engine for feasibility study. The thermal bubble inkjet technology is used on the design of digital controlled μPFi system in this study. This system is composite by the arrays of the thermal bubble micro-fuel injectors, which could be operating in high ejection frequency and with fine fuel droplets into the intake pipe on engines by accurate control mode. The advantages of digital control on fuel droplet atomization are active control of fuel ejection volume and optimization of combustion efficiency. The atomized fuel droplet volumes are controlled within 100 ∼ 500 pl. The endurance test of the μPFi fuel supply assemblage had accumulated over 200 hours in a bench. It could be afforded a motorcycle to drive more than 10,000 km accumulated-mileage at constant speed 50 kph. The engine tests show that the μPFi engine improved BSFC by up to 15%, relative to carburetor engine. In addition, the motorcycle with μPFi system achieves superior exhaust CO emissions than the carburetor system while keeping comparable performance.
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Document Type: Research Article

Publication date: 2004-01-01

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  • For more than 30 years, IS&T's series of digital printing conferences have been the leading forum for discussion of advances and new directions in 2D and 3D printing technologies. A comprehensive, industry-wide conference that brings together industry and academia, this meeting includes all aspects of the hardware, materials, software, images, and applications associated with digital printing systems?particularly those involved with additive manufacturing and fabrication?including bio-printing, printed electronics, page-wide, drop-on-demand, desktop and continuous ink jet, toner-based systems, and production digital printing, as well as the engineering capability, optimization, and science involved in these fields. In 2016, the conference changed its name formally to Printing for Fabrication to better reflect the content of the meeting and the evolving technology of printing.

    Please note: For purposes of its Digital Library content, IS&T defines Open Access as papers that will be downloadable in their entirety for free in perpetuity. Copyright restrictions on papers vary; see individual paper for details.

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