Experimental research of the effects of the variable valve timing to the engine performance

EXPERIMENTAL RESEARCH OF THE EFFECTS OF THE VARIABLEVALVE TIMING TO THE ENGINE PERFORMANCE(M.Sc. Thesis)Fuat GÜNGAZ ÜN VERS TYINSTITUTE OF SCIENCE AND TECHNOLOGYJune 2006SUMMARYIn this research paper, The differences between the constant valvetiming and variable valve timing have been studuied. To obtain this,shutting down the vvt system, without any changing on the engine of avehicle that has a variable valve timing, the engine that has a constantvalve timing was obtained. n addition the effects of the constant valvetiming and variable valve timing against to the engine torque, enginepower, wheel output power , power lost and specific fuel consumptionhave been discussed. In the results of the experiment the variablevalve timing has more good effects on the engine torgue, engine power,wheel output power and specific fuel consumption than constant valvetiming have been showed.Science Code : 708.3.026Key Words : Engine performance, VVT, Valve timingPage Number : 94Thesis Administrator : Doç. Dr. Atilla KOCA