RT Journal Article SR Electronic A1 Liščák, Štefan A1 Drozdziel, Pawel T1 THE RELATIONSHIPS BETWEEN CONDITIONS OF VEHICLE MAINTENANCE AND NUMBER OF CRANKSHAFT REVOLUTION OF ITS ENGINE JF Doprava a spoje YR 2005 VO 1 IS 2 UL https://tac.uniza.sk/artkey/das-200502-0006.php AB Basing on the analysis of the correlation between the number of 4CT90 engine crankshaft revolutions and distance covered by the LUBLIN truck between consecutive start-ups of its engine it was confirmed that during extra-urban conditions the work of an engine is more stable. The increase of the vehicle speed during "supervised" maintenance research causes the stabilization of engine work, too.