Problem 2: A gasoline-type fuel is generated by blending 15% by mass of butene-1, 70% triptane and 15% isodecane. Determine: a) The antiknock index. Note: the component contributions may be mass-weighted toward the ON totals. b) If the fuel is sensitive to combustion chamber geometry. c) According to the information provided in Table, I the motor octane number is less than the research octane number. The motor test is performed under conditions that are more likely to produce knock. Name at least two parameters that you could control during a test to create conditions likely to produce knock. Explain how you would adjust the parameters (increase or decrease) to achieve the desired outcome. Fuel MON RON Butene-1 (C4H8) 80 99 Triptane (C7H16) 101 112 Isodecane (C10H22) 92 113 Table 1: Motor and research octane numbers for three hydrocarbon fuels.
