Internal Combustion Engine

Colin R.Ferguson

1985 M

 

 

Contents
One
INTRODUCTION
1.1 Spark Ignition Engines…………………………………………………………………… I
1.2 Compression Ignition Engines……………..………………………………………….. 24
1.3 Stratified Charge Engines……………………………………………………………… 37
1.4 Two-Stroke Engines ……………………………………………………………………..41
1.5 State of the Art Engines………………………………………………………………… 45
1.6 Alternative Engines……………………………………………………………………... 51
1.7 General References……………………………………………………………………... 61
1.8 Specific References……………………………………………………………………… 62
1.9 Homework ………………………………………………………………………………...64
Two
GAS CYCLES …………………………………………………………………………………71
2.1 Constant Volume Heat Addition ……………………………………………………….71
2.2 Constant Pressure Heat Addition
2.3 Dual Cycle……………………………………………………………………………….. 76
2.4 Discussion………………………………………………………………………………... 78
2.5 Arbitrary Heat Release…………………………………………………………………. 80
2.6 Heat Loss…………………………………………………………………………………. 86
2.7 Mass Loss (Blowby)…………………………………………………………………….. 89
2.8 Ideal Four-Stroke Process……………………………………………………………... 91
2.9 Two-Stroke Engines
2.10 Dimensional Analysis
2.11 References
2.12 Homework ……………………………………………………………………………….99


FUEL, AIR, AND COMBUSTION THERMODYNAMICS…………………………… 103
3.1 Ideal Gas Equations of State…………………………………………………………. 103
3.2 Stoichiometry and FueL-Air—Residual Composition…………………………….. 108
3.3 A Subroutine for Fuel-Air Residual Gas……………………………………………. 111
3.4 Equilibrium Combustion Products………………………………………………….. 115
3.5 Practical Chemical Equilibrium—Formulation…………………………………… 121
Seven
3.6 Practical Chemical Equilibrium—Solution………………………………………… 122
3.7 A Subroutine for Equilibrium Combustion Products…………………………….. 1.28
3.8 Liquids and Liquid Vapor—Gas Mixtures…………………………………………. 133
3.9 Isentropic Processes…………………………………………………………………... 136
3.10 Combustion…………………………………………………………………………… 141
3.11 References……………………………………………………………………………. 144.
3.12 Homework……………………………………………………………………………. 1.45
7.6 Numer
Four
7.7 Long F
FUEL-AIR CYCLES……………………………………………………………………….. 149
4.1 Efficiency……………………………………………………………………………….. 149
4.2 Otto Cycle………………………………………………………………………………. 153
4.3 Fuel-Injected Limited-Pressure Cycle……………………………………………… 163 
4.4 Arbitrary Heat Release—Fuel Inducted Engines………………………………….. 168 
4.5 Arbitrary Heat Release—Fuel Injected Engines………………………………… 180
4.6 References…………………………………………………………………………… 187
4.7 Homework…………………………………………………………………………… 188
Five Eight
ACTUAL CYCLES AND THEIR DETERMINATION 191 HEAT AND
5.1 Dynamometers…………………………………………………………………………. 191
5.2 Fuel and Air Flow……………………………………………………………………... 194
5.3 Exhaust Gas Analysis…………………………………………………………………. 198
5.4 Residual Fraction…………………………………………………………………….. 206.
5.5 Pressure—Volume Measurement…………………………………………………… 207
5.6 Spark Ignition Engine—Actual Cycles……………………………………………… 209
5.7 Compression Ignition Engines Actual Cycles……………………………………… 215
5.8 References………………………………………………………………………………. 220
5.9 Homework ……………………………………………………………………………….220
Nine
Six COMBUSTI
FRICTION
- …………………………………………………………………………………223
9.1 Flow
\i
6.1 Motoring Mean Eectivc Prcssure………………………………………………….... 225
6.2 Dimensional Analysis………………………………………………………………… 229

Contents Ix
6.3 Piston and Ring Friction……………………………………………………………… 230
6.4 Journal Bearings ……………………………………………………………………….240
6.5 Other Friction………………………………………………………………………….. 245
6.6 The Nature of Friction…………………………………………………………………
247
6.7 References ……………………………………………………………………………….250
6.8 Homework ……………………………………………………………………………….252
Seven
AIR, FUEL, AND EXHAUST FLOWS 253
7.1 Thermodynamic Analysis—Four-Stroke Engine …………………………………253
7.2 Valve Flow…………………………………………………………………………… 257
7.3 Short Pipes …………………………………………………………………………….263
7.4 Dimensional Analysis……………………………………………………………….. 263
7.5 Valve Sizing ……………………………………………………………………………266
7.6 Numerical Modeling—Short Pipes, Mixed Plenums…………………………….. 266
7.7 Long Pipes …………………………………………………………………………….270
7.8 Two-Stroke Engines………………………………………………………………… 276
7.9 Pumping and Scavenging Work…………………………………………………… 283
7.10 Swirl and Squish …………………………………………………………………….287
7.11 Turbulence………………………………………………………………………….. 300
7.12 Carburetion ………………………………………………………………………….305
7.13 Fuel Injection………………………………………………………………………. 313
7.14 References………………………………………………………………………….. 325
7.15 Homework ……………………………………………………………………………327
Eight
HEAT ANI) MASS LOSS
8.1 Conduction Heat Transfer …………………………………………………………...335
8.2 Convective Heat Loss …………………………………………………………………341
8.3 Transport Properties of a Gas Mixture…………………………………………… 346
8.4 Radiation Heat Transfer……………………………………………………………… 351
8.5 Heat Transfer Measurements………………………………………………………… 353
8.6 Mass Loss or Blowby …………………………………………………………………..362
8.7 References……………………………………………………………………………… 367
8.8 Homework ……………………………………………………………………………….368
Nine
COMBUSTION AND EMISSIONS………………………………………………………. 371
9.1 Flow Visualization
9.2 Thermodynamic Analysis
9.3 Autoignition……………………………………………………………………………. 387

X Contents
9.4 Nitric Oxides…………………………………………………………………………… 394
9.5 Carbon Monoxide……………………………………………………………………… 401
9.6 Hydrocarbons………………………………………………………………………….. 403
9.7 Particulates…………………………………………………………………………….. 414

9.8 Emission Control………………………………………………………………………. 417  
9.9 References ……………………………………………………………………………….424
9.10 Homework…………………………………………………………………………….. 426
Ten
FUELS AND LUBRICANTS …………………………………..…………………..433
10.1 Crude Oil ………………………………………………………………………………433
10.2 Refining ………………………………………………………………………………...433
10.3 Hydrocarbons …………………………………………………………………………435
10.4 Alcohols, Phenols, and Ethers…………………………………………………….. 440
10.5 Chemical Processing …………………………………………………………………440
10.6 Gasoline……………………………………………………………………………… 441
10.7 Diesel Fuel…………………………………………………………………………… 444
10.8 Ideal Gas Enthalpy and Entropy Estimates……………………………………… 452
10.9 Fuel Additives………………………………………………………………………... 454
10.10 Lubricating Oils……………………………………………………………………. 455
10.11 Alternative Fuels …………………………………………………………………….458
10.12 References…………………………………………………………………………... 459
Eleven
ENGINE PERFORMANCE……………………………………………………… 461
11.1 Engine Size …………………………………………………………………...461
11.2 Compression Ratio and Engine Speed……………………………………………. 463
11.3 Part-Load Performance …………………………………………………………......467
11.4 Ambient Pressure and Temperature……………………………………………….. 471
11.5 Heat Release Timing …………………………………………………………………472
116 Performance Maps……………………………………………………………………. 477
11.7 References ……………………………………………………………………………..483
11.8 Homework …………………………………………………………………………….484
Appendices………………………………………………………………………… 487
A: IMSL ROUTINES…………………………………………………………….. 487
B: Units and
Conversion Factors………………………………………………………. 501
C: Thermodynamic Derivatives………………………………………………….. 509
E: Fue1r Cycles Via Charts……………………………………………………………… 513
Index………………………………………………………………………………. 543