A six-cylinder, four-stroke cycle SI engine with multipoint port fuel injectors operating on an Otto cycle...
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A six-cylinder, four-stroke cycle SI engine with multipoint port fuel injectors operating on an Otto cycle at wide open throttle (WOT). The fuel injectors are set to deliver an air-fuel ratio such that gasoline (C8H15) would burn at stoichiometric conditions. Calculate: (a) equivalence ratio if gasoline is replaced with ethanol without readjusting the air- fuel delivered by the fuel injectors (b) increase or decrease in brake power using alcohol instead of gasoline under these conditions, with the same air flow rate and same thermal efficiency. Assume ethanol would burn under these conditions with the same combustion efficiency. A six-cylinder, four-stroke cycle SI engine with multipoint port fuel injectors operating on an Otto cycle at wide open throttle (WOT). The fuel injectors are set to deliver an air-fuel ratio such that gasoline (C8H15) would burn at stoichiometric conditions. Calculate: (a) equivalence ratio if gasoline is replaced with ethanol without readjusting the air- fuel delivered by the fuel injectors (b) increase or decrease in brake power using alcohol instead of gasoline under these conditions, with the same air flow rate and same thermal efficiency. Assume ethanol would burn under these conditions with the same combustion efficiency.
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