Volume 19, Issue No.1


Combustion engine, inlet system, outlet system.


This article is focused on experimental analysis of acoustic wave influences on the brake mean effective pressure. An experimental base was created using a racing motorbike driven by piston combustion engine, which is equipped with a developed inlet pipe. The inlet air pressure value changed from the atmospheric level to the under-pressure level. This change is connected directly with increasing of the power output and torque. The tuned racing outlet system was applied for measuring of the outlet pipe characteristics. There were investigated influences of the individual configurations in the case of both analysed systems by means of the sequential experimental measurements. During measurement performed using the final configuration of the inlet system there was recorded an increment of the power output on high speed what is illustrated at comparison of global benefit relating to the basic version. The presented inlet pipe was successful in the motorsport area and it was patented, as well.

Acta Mechanica Slovaca. Volume 19, Issue 1, Pages 6–17, ISSN 1335-2393


 Analysis of Inlet and Outlet System of ...


[1] BENSON, RS.: The thermodynamics and gas dynamics of internal combustion engines. In: Horlock J.H, Winterbone D.E, editors, vol. 1. Oxford: Clarendon Press; 1982.

[2] WINTERBONE, D.E.; Pearson, R.J.: Design techniques for engine manifolds: wave action methods for IC engines. London: Professional Engineering Publishing Ltd.; 1999.

[3] WINTERBONE, D.E.; PEARSON, R.J.: Theory of engine manifolds design: wave action methods for IC engines. London: Professional Engineering Publishing Ltd.; 2000.

[4] SELAMETA, A.; KOTHAMASUA, V.; NOVAKB, J.M.; KACH, R.A.: Experimental investigation of in-duct insertion loss of catalysts in internal combustion engines. Appl. Acoust. 2000; 60:451–87.

[5] PAYRI, F.; TORREGROSA. A.J.; PAYRI, R.: Evaluation through pressure and mass velocity distributions of the linear acoustical description of I.C. engine exhaust systems. Appl. Acoust. 2000; 60:489–504.

[6] HARRISON, M.F.; DE SOTO, I.; RUBIO UNZUETA, P.L.: linear acoustic model for multicylinder IC engine inlet manifolds including the effects of the inlet throttle. J. Sound. Vib. 2004; 278:975–1011.

[7] DAVIES, P.; Holland, K.: Engine inlet and exhaust noise assessment. J. Sound Vib. 1999; 223(3):425–44.

[8] BIGOŠ, P., - PUŠKÁR, M.: Increasing of power output of racing motorcycle engine using of exhaust system optimisation / Peter Bigoš, Michal Puškár - 2011. In: Acta Mechanica Slovaca. Roč. 15, č. 1 (2011), s. 70-77. - ISSN 1335-2393

[9] ALTEN, H.; ILLIEN, M.: Demands on formula one engines and subsequent development strategies. SAE paper 2002-01-3359; 2002.

[10] OHATA, A.; ISHIDA, Y.: Dynamic inlet pressure and volumetric efficiency of four cycle four cylinder engine, SAE paper 820407; 1982

[11] PIGNONE, G.A.; VERCELLI, R.U.: Motori ad Alta Potenza Specifica, Giorgio Nada, editor. 2nd ed.; 2003.

[12] PUŠKÁR, M.; BIGOŠ, P.: Method for accurate measurements of detonations in motorbike high speed racing engine, Measurement 2012, Vol. 45, no. 3 (2012), p. 529–534, ISSN 0263-2241

[13] PUŠKÁR, M.; BIGOŠ, P.; PUŠKÁROVÁ, P.: Accurate measurements of output characteristics and detonations of motorbike high-speed racing engine and their optimization at actual atmospheric conditions and combusted mixture composition, Measurement 2012, Vol. 45, no. 5 (2012), p. 1067–1076, ISSN 0263-2241

[14] PUŠKÁR, M.; BIGOŠ, P.; BALÁŽIKOVÁ, M.; PEŤKOVÁ, V.: The measurement method solving the problems of engine output characteristics caused by change in atmospheric conditions on the principle of the theory of optimal temperature range of exhaust system, Measurement 2013, Vol. 46, no. 1 (2013), p. 467–475, ISSN 0263-2241

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