Н. W. 1) C,H, is burned in an engine with a rich fuel-air ratio. Dry analysis of the exhaust gives the following volume percentages: CO2 = 14.95%, C,H,= 0.75%, CO - 0%, O2- 0%, with the rest being N2. Calculate: a) Air-fuel ratio b) Equivalence ratio 2) Methanol (CH,OH) is burned in an engine with air at equivalence ratio of 0.75.

Automotive Technology: A Systems Approach (MindTap Course List)
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Chapter9: Automotive Engine Designs And Diagnosis
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Н. W.
1) C,H, is burned in an engine with a rich fuel-air ratio. Dry analysis of the
exhaust gives the following volume percentages: CO2 = 14.95%, C,H,= 0.75%,
CO - 0%, O2= 0%, with the rest being N2. Caculate:
a) Air-fuel ratio
b) Equivalence ratio
2) Methanol (CH,OH) is burned in an engine with air at equivalence ratio of 0.75.
Write the balanced chemical equation for this reaction and air-fuel ratio.
3) Isooctane (C, H,,) is burned with air in an engine at an equivalence ratio of
0.833, ind air-fuel ratio and write the balanced chemical reaction equation.
Transcribed Image Text:Н. W. 1) C,H, is burned in an engine with a rich fuel-air ratio. Dry analysis of the exhaust gives the following volume percentages: CO2 = 14.95%, C,H,= 0.75%, CO - 0%, O2= 0%, with the rest being N2. Caculate: a) Air-fuel ratio b) Equivalence ratio 2) Methanol (CH,OH) is burned in an engine with air at equivalence ratio of 0.75. Write the balanced chemical equation for this reaction and air-fuel ratio. 3) Isooctane (C, H,,) is burned with air in an engine at an equivalence ratio of 0.833, ind air-fuel ratio and write the balanced chemical reaction equation.
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