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{
"metadata": {
"name": "",
"signature": "sha256:023bb2358c5a7a6740b1b9a08290e11f954e790555a353817bbe84615e4679e6"
},
"nbformat": 3,
"nbformat_minor": 0,
"worksheets": [
{
"cells": [
{
"cell_type": "heading",
"level": 1,
"metadata": {},
"source": [
"CHAPTER 9: VALVE DIAGRAMS AND VALVE GEARS"
]
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 9.5 Page 150"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import pi,sqrt,acos,asin,atan,cos,sin,tan\n",
"p=20#in\n",
"l=100#in\n",
"r=120#r.p.m\n",
"v=3.5#in\n",
"l2=1#in\n",
"l3=1/8#in\n",
"v1=1.44#omega in/sec\n",
"\n",
"#CALCULATIONS\n",
"V=p*(1.06/1.166)#omega in./sec\n",
"R=(V/v1)#omega in/sec\n",
"\n",
"#RESULTS\n",
"print\"The ratio of velocity of the piston to the velocity is\",round(R,3),\"Omega in/sec\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"The ratio of velocity of the piston to the velocity is 12.626 Omega in/sec\n"
]
}
],
"prompt_number": 1
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 9.7 Page 151"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import pi,sqrt,acos,asin,atan,cos,sin,tan\n",
"v=0.6#in\n",
"m=1.0#in\n",
"t=0.75#in\n",
"p=4#in\n",
"\n",
"#CALCULATIONS\n",
"D=t/m#in\n",
"A=(p*m/D)#in\n",
"\n",
"#RESULTS\n",
"print\"the travel and laps of the value is\",round(A,3),\"in\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"the travel and laps of the value is 5.333 in\n"
]
}
],
"prompt_number": 2
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 9.10 Page 154"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import pi,sqrt,acos,asin,atan,cos,sin,tan\n",
"l=1.5#in\n",
"p=4.0#in\n",
"v=0.98#in\n",
"\n",
"#CALCULATIONS\n",
"T=(l*p/v)#in\n",
"\n",
"#RESULTS\n",
"print\"the particulars of a value and it eccentric is\",round(T,3),\"in\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"the particulars of a value and it eccentric is 6.122 in\n"
]
}
],
"prompt_number": 3
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 9.12 Page 156"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import pi,sqrt,acos,asin,atan,cos,sin,tan\n",
"p=1/10#in\n",
"v1=3/4#in\n",
"v2=3/5#in\n",
"m=1*1/2#in\n",
"l=4#cranks\n",
"a1=1.25#in\n",
"a2=0.7#in\n",
"\n",
"#CALCULATIONS\n",
"C=a1/a2#in\n",
"A=l*a1/a2#in\n",
"S=(A/2-a1)#in\n",
"\n",
"#RESULTS\n",
"print\"the travel of the value is\",round(S,3),\"in\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"the travel of the value is 2.321 in\n"
]
}
],
"prompt_number": 4
},
{
"cell_type": "heading",
"level": 2,
"metadata": {},
"source": [
"Example 9.17 Page 161"
]
},
{
"cell_type": "code",
"collapsed": false,
"input": [
"#initialisation of variable\n",
"from math import pi,sqrt,acos,asin,atan,cos,sin,tan\n",
"v=3*1/2#in\n",
"a=30#degree\n",
"l=0.8#in\n",
"v1=0.2#in\n",
"L=0.13#in\n",
"m=1.075#in\n",
"d=0.58#in\n",
"p=1.875#in\n",
"\n",
"#CALCULATIONS\n",
"V=(p-d)#in\n",
"P=V+1.25#in\n",
"\n",
"#RESULTS\n",
"print\"the main value and the maximum opening to steam is\",round(P,3),\"in\""
],
"language": "python",
"metadata": {},
"outputs": [
{
"output_type": "stream",
"stream": "stdout",
"text": [
"the main value and the maximum opening to steam is 2.545 in\n"
]
}
],
"prompt_number": 5
}
],
"metadata": {}
}
]
}
|
