From b1f5c3f8d6671b4331cef1dcebdf63b7a43a3a2b Mon Sep 17 00:00:00 2001 From: priyanka Date: Wed, 24 Jun 2015 15:03:17 +0530 Subject: initial commit / add all books --- 2063/CH7/EX7.16/7_16.sce | 22 ++++++++++++++++++++++ 1 file changed, 22 insertions(+) create mode 100755 2063/CH7/EX7.16/7_16.sce (limited to '2063/CH7/EX7.16/7_16.sce') diff --git a/2063/CH7/EX7.16/7_16.sce b/2063/CH7/EX7.16/7_16.sce new file mode 100755 index 000000000..e23702fa0 --- /dev/null +++ b/2063/CH7/EX7.16/7_16.sce @@ -0,0 +1,22 @@ +clc +clear +//Input data +P=20;//Power developed by a four stroke diesel engine per cylinder in kW +N=2000;//Operating speed of the diesel engine in rpm +s=0.25;//Specific fuel consumption in kh/kW +p1=180;//Pressure of fuel injected in bar +d=25;//Distance travelled by crank in degrees +p2=38;//Pressure in the combustion chamber in bar +Cd=0.85;//Coefficient of velocity +A=30;//API in degrees + +//Calculations +T=d/(360*(N/60));//Duration of fuel injection in s +SG=(141.5/(131.5+A))*10^3;//Specific gravity of fuel +V=Cd*(2*(p1-p2)*10^5/SG)^(1/2);//Velocity of fuel injection in m/s +Vf=(s/60)*P/((N/2)*SG);//Volume of fuel injected per cycle in m^3/cycle +Na=Vf/(V*T);//Nozzle orifice area in m^2 +d=(((4*Na)/3.14)^(1/2))*10^3;//Diameter of the orifice of the fuel injector in mm + +//Output +printf('The diameter of the orifice is %3.4f mm',d) -- cgit