diff options
Diffstat (limited to '3685/CH20/EX20.2/Ex20_2.sce')
| -rw-r--r-- | 3685/CH20/EX20.2/Ex20_2.sce | 19 |
1 files changed, 19 insertions, 0 deletions
diff --git a/3685/CH20/EX20.2/Ex20_2.sce b/3685/CH20/EX20.2/Ex20_2.sce new file mode 100644 index 000000000..ea0ce7e0f --- /dev/null +++ b/3685/CH20/EX20.2/Ex20_2.sce @@ -0,0 +1,19 @@ +clc
+// Given that
+// Four cylinder engine
+BP = 30 // Power developed by engine in kW
+N = 2500 // Speed in rpm
+P_m = 800 // Mean effective pressure for each cylinder in kN/m^2
+n_m = 0.8 // Mechanical efficiency
+r = 1.5 // Stroke to bore ratio
+n_b = 0.28 // Brake thermal efficiency
+c_v = 44 // Heating value of petrol in MJ/kg
+printf("\n Example 20.2\n")
+IP = BP/n_m
+d = ((IP*1000*60)/(P_m*1000*r*(%pi/4)*N*4))^(1/3)
+L = r*d
+m_f = BP/(c_v*1000*n_b)
+bsfc = m_f*3600/BP
+printf("\n Diameter of cylinder = %f cm\n Stroke of each cylinder = %f cm\n Brake specific fuel consumption = %f kg/kWh",d*10^2,L*100,bsfc)
+
+
|