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An experimental and computational investigation of the effect of primary intake runner geometry on the performance of a single cylinder engine

Mariucci, Vincent Edward
http://rave.ohiolink.edu/etdc/view?acc_num=osu1184187415

Abstract Details

2006, Master of Science, Ohio State University, Mechanical Engineering.
The present study investigates the effects of various intake configurations on a firing single cylinder research engine. Eighteen different intake configurations were tested and modeled including a straight baseline case, tapers, varying inlet radii, bends, and S-bends. All of the intakes include a beilmouthed flange at the entrance and retain the same length to the beilmouth, transducer locations, and downstream diameter in an effort to identify the effect of the intake geometry only. An experimental study was conducted where each intake was instrumented with three pressure transducers. One of the pressure transducers was located near the entrance of the intake; the others were located downstream of the barrel throttle. Volumetric efficiency, brake power, and intake and exhaust pressures for each configuration are presented to determine the effect of each geometry on engine performance. Each intake configuration was modeled using a quasi-one-dimensional finite difference engine simulation code, MANDY. The volumetric efficiencies and pressures obtained experimentally are compared to the predictions to assess the code's ability to predict the effects of the various intake configurations on engine performance. Taper area ratios above 1.5 were found to have a detrimental effect on volumetric efficiency at high-speed tuning peaks. The inlet flow losses for the sharpest beilmouth studied (R1/D = 0.05) had a measurable negative effect on volumetric efficiency, while those of larger-radiused inlets were negligible. The flow losses associated with the bends and S-bends also had a detrimental effect on volumetric efficiency compared to the straight pipe. In general, MANDY showed a good agreement with the experiments for each intake configuration for both volumetric efficiency and intake pressure near the valves at the main tuning peak speeds.
Ahmet Selamet (Advisor)
219 p.

Recommended Citations

Citations

  • Mariucci, V. E. (2006). An experimental and computational investigation of the effect of primary intake runner geometry on the performance of a single cylinder engine [Master's thesis, Ohio State University]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=osu1184187415

    APA Style (7th edition)

  • Mariucci, Vincent. An experimental and computational investigation of the effect of primary intake runner geometry on the performance of a single cylinder engine. 2006. Ohio State University, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=osu1184187415.

    MLA Style (8th edition)

  • Mariucci, Vincent. "An experimental and computational investigation of the effect of primary intake runner geometry on the performance of a single cylinder engine." Master's thesis, Ohio State University, 2006. http://rave.ohiolink.edu/etdc/view?acc_num=osu1184187415

    Chicago Manual of Style (17th edition)

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© 2006, all rights reserved.
This open access ETD is published by The Ohio State University and OhioLINK.