Analyse of modification parameters in a four cylinder four stroke gasoline engine

viANALYSE OF MODIFICATION PARAMETERSIN A FOUR CYLINDER FOUR STROKEGASOLINE ENGINE(M. Sc. Thesis)Özer Serat SEYMENGAZI UNIVERSITYINSTITUTE OF SCIENCE AND TECHNOLOGYAugust 2006ABSTRACTNow a days on vehicles named as a modifications studies have been done forincreasing of performance however in this studies which is not academic levelare amateur.In this study, four cylinders, four cycles, four cycles, with spark ignition, 1300ccsingle point injection engine was used for tests. Tests were performed ondynamometer at full load and the variable speeds. In this tests were used airfilter, spark plug, turbulator and N2O kit system which were suitablemodification conditions for test engine.The result of the in this test power output didn?t increase with performance airfilter according to standard air filter. Torque and out put values decreased withturbulator which should have waited for increasing of performance. Alsoemissions have gone to worse with turbulator. Engine performance was notcharged in these tests by multi point ignition spark plug according to standardspark plug.viiAs results torque and power out put valued were increased to 15%-40% by drytype system which was used with N2O kit in test.Science Code : 708.3.026Key Words : Air filter, Spark plug, Turbulator, N2O.Page Number : 119Adviser : Doç. Dr. Yakup Ç NGÜR