A thermomechanical aspect of the ceramic-capped piston of hypothetical adiabatic diesel engine

• Autorzy: Jaskólski J. , Krzyżak R.
• Języki publikacji: EN

Abstrakty

EN

The paper concerns a hypothetical Al.-alloy piston coated (capped) first by labradore and then capped by YSZ. The labradore, a member of the feldspar group is deemed thermal-shock resistant, the YSZ(PSZ) can be shock-resistant, but the outcome of the two with the Al.-alloy is not known. The analysis were made in two ways by ANSYS 10.0, as wholly isotropic materials and (second) labradore treated as wholly orthotropic one as basing on a designed texture. The above programme was fed up by the FORTRAN95-outcome of temperatures and the other B.C.’s.The temperatures between the ceramics and the alloy (except one node!!, the FORTRAN) are ( from the above two procedures), 222.63 to 270-300 graduate C, at the first groove are about 290 graduate C, and, surely lower (orthotropic). The relatively low (to ceramic) inner tensile stresses are embraced by the compressive ones from all the sides. The only problem is the-alloy bearing capacity at some sections at the ceramic boundary (and only there). But, it was the aim of the work to stick ceramics there.The dangerous stresses can occur at the pin .The ‘orthotropic ‘ results are better than the ‘iso’-ones and more true.. Taking into account that the real loading will be lower (porosity of the ceramics, the mass and the possible subtraction of stresses, i.e. those ceramic-production-confined ones) , the laboratory production of the piston appears worth.

Słowa kluczowe

EN

piston cap; adiabatic engine; radiative transfer; YSZ; thermal conductivity; absorption coefficients; joining of materials

• 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: 2006
• Tom: Vol. 13, No. 2
• Strony: 169--177
• Opis fizyczny: Bibliogr. 8 poz., rys.

Twórcy

autor

Jaskólski J.

autor

Krzyżak R.

• Krakow University of Technology, Institute of Vehicles and IC Engines, Jana Pawła the II Av.37 PL 31-864 Cracow, tel.: [phone],

Bibliografia

• [1] Ivanova, L. P., Romashin, A. G., Burovova, N. D. and Kryuchkov, V. A., Poluchenie i svoystva tsirkonevoy keramiki, Ogneup., 1991/2, p.6-9.
• [2] Jaskólski, J. and Krzyżak, R., New materials and ideas to be used in adiabatic engines, KONES, 2004/1-2, p.288-294.
• [3] Jaskólski, J. and Krzyżak, R., Several aspects of joining materials without brazing, Fundamental’nye i prikladnye problemy sovershenstvovaniya porshnevykh dvigateley; Mezhd. Nauch. Prakt. Konfer. Vladimir, 2005, 10, p.21-22 (abstract), the full text on the Conference CD.
• [4] Jaskólski,J. and Krzyżak, R., The E moduli from onthogeny of the ceramic aggregate?, ibidem, 2006, submitted.
• [5] Krzyżak, R., The mineralogical aspects of (radiative) conductivity of ceramics, ibidem, 2003, p.69-72.
• [6] Stewart, D. B., Walker, G. W., Wright, T. L. and Fahey, J. J., Physical properties of calcic labradorite from Lake County, Oregon, Am. Mineralogist.,1966/Jan-Feb., p.177-197.
• [7] Tret’yachenko, G. N. and Karpinos, B. S.,Zavisimost’ mezhdu mekhanicheskimi i teplofizicheskimi kharakteristikami materialov pri nagruzhenii tverdykh tel, Probl. Prochnosti, 1986/10, p. 9-14.
• [8] Wyka, Z., Pomiar temperatur metodą kołków termometrycznych na przykładzie tłoka chłodzonego natryskiem oleju, in: Badania rozwojowe tłoków silników spalinowych, Politechnika Krakowska, Kraków-Janowice, 1979, p. 95-104. Unpublished.