Measurement of axial motions of piston rings in a two-stroke engine by using back light of LED

• Autorzy: Nakashima K. , Mizuno M. , Usami H.

Identyfikatory

DOI

10.5604/01.3001.0012.4353

• Języki publikacji: EN

Abstrakty

EN

In two-stroke engines of the crankcase-compression type, the piston rings slide over not only the cylinder wall but also the cylinder ports. It is important for piston ring designers to understand how piston rings behave over cylinder ports. In order to clarify the axial motion of piston rings in two-stroke engines, we established a measurement method using light-emitting diodes (LEDs). We attached LEDs inside the piston, and leaked the backlight of LEDs through the side clearance between the piston ring side face and the piston ring groove side face. From the position of the leaked backlight in the piston ring groove, we determined the axial ring position in the ring groove. Our experiments set this piston with LEDs in an experimental two-stroke engine with a transparent cylinder, and investigated the effects of intake and exhaust ports on axial ring motion under motoring operations. Results indicated that the rings moved in the axial direction by the ring projection and catching in the intake and exhaust ports.

Słowa kluczowe

EN

two-stroke engine; piston ring; cylinder port; axial motion of piston ring; LED; transparent cylinder

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2018
• Tom: Vol. 25, No. 3
• Strony: 363--369
• Opis fizyczny: Bibliogr. 9 poz., rys.

Twórcy

autor

Nakashima K.

• Meijo University, Department of Vehicle and Mechanical Engineering 1-501 Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan tel.: [phone], fax: [phone]

autor

Mizuno M.

• Meijo University, Department of Vehicle and Mechanical Engineering 1-501 Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan tel.: [phone], fax: [phone]

autor

Usami H.

• Meijo University, Department of Vehicle and Mechanical Engineering 1-501 Shiogamaguchi, Tempaku-ku, Nagoya 468-8502, Japan tel.: [phone], fax: [phone]

Bibliografia

• [1] Duret, P., Venturi, S., Dewangan, P., Small gasoline direct fuel injection two-stroke engines for range extender applications, SIA Powertrain Conference, pp. 1-9, 2015.
• [2] Mattarelli, E., Rinaldini, C., Cantore, G., Baldini, P., 2-stroke externally scavenged engines for range extender applications, SAE Paper 2012-01-1022, pp. 1-19, 2012.
• [3] Iijima, N., Miyamoto, T., Takiguchi, M., Kai, R., Sato, M., An experimental study on phenomena of piston ring collapse, SAE 2002 Transactions Journal of Engines-V111-3, pp. 1019-1026, 2002.
• [4] Hayashi, M., Ooguro, T., Sakai, T., Ozawa, T., Kawai, K., Yamamoto, M., Investigation of oil consumption mechanism near piston rings, JSAE Proceedings, No. 20155321, pp. 1693-1697, Yokohama 2015.
• [5] Nakashima, K., Fuma, K., Kurokawa, D., Nakano, Y., Murakami, Y., Yamamoto, M., Piston ring projection and catching in cylinder ports of two-stroke cycle engine, Journal of Advanced Mechanical Design, System, and Manufacturing, Vol. 6, No. 1, pp. 23-32, 2012.
• [6] Nakashima, K., Murakami, Y., Yamamoto, M., Ishihara, S., Projection behavior of piston rings in cylinder ports of a two-stroke cycle engine, SAE International Journal of Engines, Vol. 6, Iss. 1, pp. 204-208, 2013.
• [7] Nakashima, K., Caifeng, C., Behavior of top ring in a two-stroke cycle engine, Proceedings of The 7th International Conference on Manufacturing, Machine Design and Tribology, pp. 11, Jeju 2017.
• [8] Nakakuki, S., Inoue, Y., Nakashima, K., Behavior of second ring in a two-stroke engine, Proceedings of JSDE Tokai Branch, pp. 38-40, Nagoya 2018.
• [9] Yamada, T., Inagaki, H., Nozawa, Y., Katsumi, N., Yamashita, K., Kawai, K., Multiple experimental approaches to investigate oil transport mechanism of piston-liner system, R&D Review of Toyota CRDL, Vol. 47, No. 2, pp. 49-59, 2016.

Uwagi

Opracowanie rekordu w ramach umowy 509/P-DUN/2018 ze środków MNiSW przeznaczonych na działalność upowszechniającą naukę (2018).