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 --- 2168/CH15/EX15.1/Chapter15_example1.sce | 13 +++++++++++++ 2168/CH15/EX15.10/Chapter15_example10.sce | 30 ++++++++++++++++++++++++++++++ 2168/CH15/EX15.2/Chapter15_example2.sce | 16 ++++++++++++++++ 2168/CH15/EX15.3/Chapter15_example3.sce | 17 +++++++++++++++++ 2168/CH15/EX15.4/Chapter15_example4.sce | 26 ++++++++++++++++++++++++++ 2168/CH15/EX15.5/Chapter15_example5.sce | 13 +++++++++++++ 2168/CH15/EX15.6/Chapter15_example6.sce | 20 ++++++++++++++++++++ 2168/CH15/EX15.7/Chapter15_example7.sce | 20 ++++++++++++++++++++ 2168/CH15/EX15.8/Chapter15_example8.sce | 22 ++++++++++++++++++++++ 2168/CH15/EX15.9/Chapter15_example9.sce | 26 ++++++++++++++++++++++++++ 10 files changed, 203 insertions(+) create mode 100755 2168/CH15/EX15.1/Chapter15_example1.sce create mode 100755 2168/CH15/EX15.10/Chapter15_example10.sce create mode 100755 2168/CH15/EX15.2/Chapter15_example2.sce create mode 100755 2168/CH15/EX15.3/Chapter15_example3.sce create mode 100755 2168/CH15/EX15.4/Chapter15_example4.sce create mode 100755 2168/CH15/EX15.5/Chapter15_example5.sce create mode 100755 2168/CH15/EX15.6/Chapter15_example6.sce create mode 100755 2168/CH15/EX15.7/Chapter15_example7.sce create mode 100755 2168/CH15/EX15.8/Chapter15_example8.sce create mode 100755 2168/CH15/EX15.9/Chapter15_example9.sce (limited to '2168/CH15') diff --git a/2168/CH15/EX15.1/Chapter15_example1.sce b/2168/CH15/EX15.1/Chapter15_example1.sce new file mode 100755 index 000000000..f3d20efc8 --- /dev/null +++ b/2168/CH15/EX15.1/Chapter15_example1.sce @@ -0,0 +1,13 @@ +clc +clear +//Input data +n=6//Number of cylinders +p=720//Horse power in h.p +N=180//Speed in r.p.m +f=250//Fuel rate in gm per horse power hour + +//Calculations +w=(((f/1000)*p)/((N/2)*60*n))*1000//Weight of fuel per cycle in gm/cycle + +//Outptut +printf('The quantity of fuel to be injected per cylinder is %3.2f gm/cycle',w) diff --git a/2168/CH15/EX15.10/Chapter15_example10.sce b/2168/CH15/EX15.10/Chapter15_example10.sce new file mode 100755 index 000000000..7f5c74119 --- /dev/null +++ b/2168/CH15/EX15.10/Chapter15_example10.sce @@ -0,0 +1,30 @@ +clc +clear +//Input data +n=6//Number of cylinders +d=11.5//Bore in cm +l=14//Stroke in cm +af=16//Air fuel ratio +pa=1.03//Pressure of air intake in kg/cm^2 +Ta=24+273//Temperature of air intake in K +nv=76.5//Volumetric efficiency in percent +R=29.27//Characteristic gas constant in kg.m/kg.K +N=1500//Speed in r.p.m +ip=125//Injection pressure in kg/cm^2 +cp=40//Compression pressure in kg/cm^2 +q=18.5//Fuel injection occupies 18.5 degrees of crenk travel +fsw=760//Fuel specific weight in kg/m^2 +dc=0.94//Orifice discharge coefficient + +//Calculations +Vs=((3.14/4)*d^2*l)//Stroke volume in c.c +Va=(Vs*(nv/100))//Volume of air supplied in c.c +wa=((pa*10^4*Va*10^-6)/(R*Ta))//Weight of air supplied per cylinder per cycle in kg +wf=(wa/af)//Weight of fuel injected per cylinder per cycle in kg +I=((60*q)/(N*360))//Injection time per cycle in sec +F=(wf/I)//Fuel injected per cylinder per sec in kg/sec +Af=(F/(dc*sqrt(2*9.81*fsw*(ip-cp)*10^4)))//Area of orifice in sq.m +df=sqrt(Af/(3.14/4))*1000//Diameter of orifice in mm + +//Output +printf('Maximum amount of fuel injected per cylinder per sec is %3.2f kg/sec \n Diameter of orifice is %3.3f mm',F,df) diff --git a/2168/CH15/EX15.2/Chapter15_example2.sce b/2168/CH15/EX15.2/Chapter15_example2.sce new file mode 100755 index 000000000..5ca12c5b1 --- /dev/null +++ b/2168/CH15/EX15.2/Chapter15_example2.sce @@ -0,0 +1,16 @@ +clc +clear +//Input data +n=4//Number of cylinders +fc=0.215//Brake specific fuel consumption in kg/B.H.P hour +BHP=400//Brake horse power in B.H.P +N=250//Speed in r.p.m +sg=0.9//Specific gravity + +//Calculations +Fc=(fc*BHP)//Fuel consumption per hour in kg/hr +Fcy=(Fc/n)//Fuel consumption per cylinder in kg/hr +Fcyc=((Fcy/(60*(N/2)))/(sg*1000))*10^6//Fuel consumption per cycle in kg. In textbook it is given wrong as 0.0287 instead of 3.185 + +//Output +printf('The quantity of fuel to be injected per cycle per cylinder is %3.3f c.c',Fcyc) diff --git a/2168/CH15/EX15.3/Chapter15_example3.sce b/2168/CH15/EX15.3/Chapter15_example3.sce new file mode 100755 index 000000000..e22c7a16b --- /dev/null +++ b/2168/CH15/EX15.3/Chapter15_example3.sce @@ -0,0 +1,17 @@ +clc +clear +//Input data +n=4//Number of cylinders +p=450//Brake Horse power in B.H.P +N=200//Speed in r.p.m +f=0.2//Fuel rate in kg per horse power hour +g=0.9//Specific gravity of fuel + +//Output +Fc=(p*f)//Fuel consumption per hour in kg/hr +Fcy=(Fc/n)//Fuel consumption per cylinder in kg/hr +Fcyc=(Fcy/(60*(N/2)))//Fuel consumption per cycle in kg +q=(Fcyc/(g*1000))*10^6//Quantity of fuel injected per cylinder per cycle in c.c + +//Output +printf('The quantity of fuel to be injected per cycle per cylinder is %3.3f c.c',q) diff --git a/2168/CH15/EX15.4/Chapter15_example4.sce b/2168/CH15/EX15.4/Chapter15_example4.sce new file mode 100755 index 000000000..e628369ed --- /dev/null +++ b/2168/CH15/EX15.4/Chapter15_example4.sce @@ -0,0 +1,26 @@ +clc +clear +//Input data +//Data from problem 1 +n=6//Number of cylinders +p=720//Horse power in h.p +N=180//Speed in r.p.m +f=250//Fuel rate in gm per horse power hour + +Vo=20//Volume of oil in the suction chamber in c.c +dp=80//Discharge pressure in kg/cm^2 +voi=6//Volume of oil in the injector in c.c +g=0.9//Specific gravity of oil +b=78.8*10^-6//Coefficient of compressibility in cm^2/kg when pressure is taken as atmospheric + +//Calculations +w=(((f/1000)*p)/((N/2)*60*n))*1000//Weight of fuel per cycle in gm/cycle +Va=(w/g)//Volume of air per cycle in c.c +V1=(Vo+Va)//Initial volume in c.c +dV12=(b*V1*dp)//Change in volume in c.c +//Assuming in accordance with average practice that s=2d, nv=0.94 and full load in this pump type x=0.5 +d=((voi+dV12)/((3.14/4)*2*0.94*0.5))^(1/3)//Diameter in cm +l=(2*d)//Stroke in cm + +//Output +printf('The diameter of the pump is %3.2f cm \n The total stroke is %3.2f cm',d,l) diff --git a/2168/CH15/EX15.5/Chapter15_example5.sce b/2168/CH15/EX15.5/Chapter15_example5.sce new file mode 100755 index 000000000..d09aaf328 --- /dev/null +++ b/2168/CH15/EX15.5/Chapter15_example5.sce @@ -0,0 +1,13 @@ +clc +clear +//Input data +p=110//Oil pressure in kg/cm^2 +pc=25//Pressure in the combustion chamber in kg/cm^2 +q=0.805//Velocity coefficient. In textbook it is given wrong as 9.805 +d=0.906//Specific gravity + +//Calculations +v=(37.1*q*sqrt((p-pc)/d))//Velocity in m/s + +//Output +printf('The velocity of injection is %3.0f m/s',v) diff --git a/2168/CH15/EX15.6/Chapter15_example6.sce b/2168/CH15/EX15.6/Chapter15_example6.sce new file mode 100755 index 000000000..0b1aa0ec0 --- /dev/null +++ b/2168/CH15/EX15.6/Chapter15_example6.sce @@ -0,0 +1,20 @@ +clc +clear +//Input data +Vf=6.2//Volume of fuel in c.c +l=65//Length of fuel line in cm +di=2.5//Inner diameter in mm +V=2.75//Volume of fuel in the injector valve in c.c +Vd=0.15//Volume of fuel to be delivered in c.c. In textbook it is given wrong as 0.047 +p=140//Pressure in kg/cm^2 +pp=1//Pump pressure in kg/cm^2 +patm=1.03//Atmospheric pressure in kg/cm^2 +b=78.8*10^-6//Coefficient of compressibility in cm^2/kg when pressure is taken as atmospheric + +//Calculations +V1=(Vf+(3.14/4)*(di/10)^2*l+V)//Initial volume in c.c +dV=((b*V1*(p-pp)/patm))//Change in volume in c.c +d=(dV+Vd)//Total displacement of the plunger in c.c + +//Output +printf('The total displacement of the plunger is %3.3f c.c',d) diff --git a/2168/CH15/EX15.7/Chapter15_example7.sce b/2168/CH15/EX15.7/Chapter15_example7.sce new file mode 100755 index 000000000..e1bf64bc6 --- /dev/null +++ b/2168/CH15/EX15.7/Chapter15_example7.sce @@ -0,0 +1,20 @@ +clc +clear +//Input data +Vf=6.75//Volume of fuel in c.c +l=65//Length of fuel line in cm +di=2.5//Inner diameter in mm +V=2.45//Volume of fuel in the injector valve in c.c +Vd=0.15//Volume of fuel to be delivered in c.c. +p=150//Pressure in kg/cm^2 +pp=1//Pump pressure in kg/cm^2 +patm=1.03//Atmospheric pressure in kg/cm^2 +b=78.8*10^-6//Coefficient of compressibility in cm^2/kg when pressure is taken as atmospheric + +//Calculations +V1=(Vf+(3.14/4)*(di/10)^2*l+V)//Initial volume in c.c +dV=((b*V1*(p-pp)/patm))//Change in volume in c.c +d=(dV+Vd)//Total displacement of the plunger in c.c + +//Output +printf('The total displacement of the plunger is %3.3f c.c',d) diff --git a/2168/CH15/EX15.8/Chapter15_example8.sce b/2168/CH15/EX15.8/Chapter15_example8.sce new file mode 100755 index 000000000..5823419be --- /dev/null +++ b/2168/CH15/EX15.8/Chapter15_example8.sce @@ -0,0 +1,22 @@ +clc +clear +//Input data +Vf=6.75//Volume of fuel in c.c +l=65//Length of fuel line in cm +di=2.5//Inner diameter in mm +V=2.45//Volume of fuel in the injector valve in c.c +Vd=0.15//Volume of fuel to be delivered in c.c. +p=150//Pressure in kg/cm^2 +pp=1//Pump pressure in kg/cm^2 +patm=1.03//Atmospheric pressure in kg/cm^2 +b=78.8*10^-6//Coefficient of compressibility in cm^2/kg when pressure is taken as atmospheric +dp=0.75//Diameter of the plunger in cm + +//Calculations +V1=(Vf+(3.14/4)*(di/10)^2*l+V)//Initial volume in c.c +dV=((b*V1*(p-pp)/patm))//Change in volume in c.c +d=(dV+Vd)//Total displacement of the plunger in c.c +s=((4/3.14)*(d/dp^2))*10//Stroke in mm + +//Output +printf('The effective plunger stroke is %3.1f mm',s) diff --git a/2168/CH15/EX15.9/Chapter15_example9.sce b/2168/CH15/EX15.9/Chapter15_example9.sce new file mode 100755 index 000000000..469004568 --- /dev/null +++ b/2168/CH15/EX15.9/Chapter15_example9.sce @@ -0,0 +1,26 @@ +clc +clear +//Input data +n=6//Number of cylinders +p=300//Horse power in H.P +N=1200//Speed in r.p.m +f=0.2//Fuel rate in kg per B.H.P hour +ip=200//Injection pressure in kg/cm^2 +cp=40//Pressure in the combustion chamber in kg/cm^2 +pic=33//Period of injection of the crank angle in degrees +g=0.83//Specific gravity of fuel. In textbook, it is given wrong as 0.89 +Cd=0.9//Coefficient of discharge + +//Output +Fc=(p*f)//Fuel consumption per hour in kg/hr +Fcy=(Fc/n)//Fuel consumption per cylinder in kg/hr +Fcyc=(Fcy/(60*(N/2)))//Fuel consumption per cycle in kg +q=(Fcyc/(g*1000))*10^6//Quantity of fuel injected per cylinder per cycle in c.c +I=((pic/360)*(1/N)*60)//Injection period in sec +df=(g/1000)//Density of fuel in kg/m^3 +v=sqrt(2*981*((ip-cp)/df))//Velocity of fuel through orifice in m/s +A=(q/(Cd*v*I))//Area of orifice in cm^2 +d=sqrt(A/(3.14/4))*10//Diameter in mm + +//Output +printf('The diameter of the single orifice injector is %3.2f mm',d) -- cgit