RT Journal Article SR Electronic A1 Merkisz, Jerzy A1 Hlavna, Vladimir T1 Internal Combustion Engines at the Turn of Millennia JF Communications - Scientific Letters of the University of Zilina YR 1999 VO 1 IS 1 SP 31 OP 38 DO 10.26552/com.C.1999.1.31-38 UL https://komunikacie.uniza.sk/artkey/csl-199901-0004.php AB Trends in the development of piston internal combustion engines in a view of tightened ecological regulations (exhaust and noise emissions, fuel consumption) have been presented in this paper. Possibilities and ways of engine design adjustments, both gasoline and diesel type (light and heavy duty), that were undertaken to fulfil the present as well as the expected standards of exhaust toxicity have been discussed as well.