Design and Simulation of Two Stroke Engines

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Design and Simulation of Two-Stroke Engines Gordon P. Blair Professor of Mechanical Engineering The Queen's University of Belfast Published by: Society of Automotive Engineers, Inc. 400 Commonwealth Drive Warrendale, PA 15096-0001 U.S.A. Phone: (412) 776-4841 Fax: (412) 776-5760 & &
?5^ Library of Congress Cataloging-in-Publication Data Blair, Gordon P. Design and simulation of two-stroke engines / Gordon P. Blair. p. cm. Includes bibliographical references and index. ISBN 1-56091-685-0 1. Two-stroke cycle engines—Design and construction. I. Title TJ790.B58 1996 621.43-dc20 95-25748 CIP Copyright © 1996 Society of Automotive Engineers, Inc. ISBN 1-56091-685-0 All rights reserved. Printed in the United States of America. Cover photo courtesy of Mercury Marine, a Brunswick Company (3.0-liter V-6 outboard engine). Permission to photocopy for internal or personal use, or the internal or personal use of specific clients, is granted by SAE for libraries and other users registered with the Copyright Clearance Center (CCC), provided that the base fee of $.50 per page is paid directly to CCC, 222 Rosewood Dr., Danvers, MA 01923. Special requests should be addressed to the SAE Publications Group. 1-56091-685-0/96 $.50. SAE Order No. R-161
Page 4 and 5: A Second Mulled Toast When as a stu
Page 6 and 7: Design and Simulation of Two-Stroke
Page 8 and 9: Acknowledgments As explained in the
Page 10 and 11: Table of Contents Nomenclature xv C
Page 12 and 13: Table of Contents 2.10.1 Flow at pi
Page 14 and 15: Table of Contents 3.5.3.1 The use o
Page 16 and 17: Table of Contents 6.1.3 The effect
Page 18 and 19: Nomenclature NAME SYMBOL UNIT (SI)
Page 20 and 21: speed of rotation speed of rotation
Page 22 and 23: attenuation or transmission loss wa
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Design and Simulation of Two-Stroke
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Design and Simulation ofTwo-Stroke
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Design and Simulation ofTwo'Stroke
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Chapter 4 Combustion in Two-Stroke
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Chapter 4 - Combustion in Two-Strok
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a stratilpl o tions to ivior. If m
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CD 30 -, W 20 - LU CO iS _J LU OC 1
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181 also x3 = — = 0.905 x6 = 2.17
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to be cur .3.20) .3.21) .3.22) for
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3.23) com- :on is hhas has a /eng-
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stroke .3.29) mean me to 3land ssio
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a LU z: en 3 CO a LU z EC D m O ho
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CD 1.2 -i 1.0 - di „„ LU 0.8 cc
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CO —> 111" cc LU < LU _J LU CC £
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Combustion in compression-ignition
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stroke ari more often lseful lental
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lat the ssi ;tribu- ELEVATION VIEWS
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CYLINDER HEAD TYPE IS CENTRAL BORE,
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CO E 50 40 - O O _i Hi > I CO 30 Z)
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CURRENT INPUT DATA FOR 2-STROKE 'SP
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Cylin- PP £ Pa- tics of Paper Chap
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vfitro- ;titi >tants 1970. i(In- Ch
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£2 = Pi P2 I Pi J Chapter 4 - Comb
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CHAINSAW AT 9600 rpm. Chapter 4- Co
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LLI •z. O N -z. 0.21 -, 0.20 DC 0
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Chapter 7 Reduction of Fuel Consump
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Chapter 7 • Reduction of Fuel Con
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Chapter 7 - Reduction of Fuel Consu
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^ s C£ Q 2^ E Q. Q_ z' o ISSI HCEM
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o > z~ Q w CO UJ w g x O z o z o m
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S.S.F.C. , C./SHP-HS Chapter 7 - Re
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0.35 • 0.34 LU ° 0.33 - c 03 DC
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§ 2000
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y, ,6 Chapter 7 - Reduction of Fuel
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Chapter 7- Reduction of Fuel Consum
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INLET FOR r AIR AND FUEL Chapter 7
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o Q_ Ld < CD 15-, 10- Chapter 7 - R
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O 01 III cr cc LU Q. LU h- LU Z o N
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Chapter 8 Reduction of Noise Emissi
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Chapter 8 • Reduction of Noise Em
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Chapter 8 - Reduction of Noise Emis
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• • / . • Appendix Listing of
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Active radical (AR) combustion and
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initial conditions, assumptions reg
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in two-stroke engine (schematic dia
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exhaust timing control valve, effec
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I Exhaust emissions/exhaust gas ana
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Exhaust systems (continued) untuned
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gas constant/universal gas constant
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in crankcase heat transfer analysis
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Mercury Marine air-assisted fuel in
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I PISTON POSITION (computer program
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Pressure wave reflection (in pipes)
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local acoustic velocity, 60 local M
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Roots blower in turbocharged/superc
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Scavenging (continued) scavenging e
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Simulation, engine See Computer mod
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temperature vs. crankshaft angle (c
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work per thermodynamic (Otto) cycle
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Design and Simulation of Two Stroke Engines

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