Find gross net indicated fuel conversion efficiency

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b. Find gross net indicated fuel conversion efficiency and IMEP c. compare the calculated residual gas fraction w/ assumed value of 0.025 A. 1 to 2 is isentropic compression, using unburned gas charts and Equation 4.25a Eq. 4.25a Ψ T 2 ( 29 Ψ T 1 ( 29 n u R bar ln v 2 v 1 - = Need nuRbar from Table 4-6 at equivalence ratio = 0.4 Look up Ψ (Tx) in Figure 4-4. nuR bar 289 J kgair K =
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