All too often the engine exhaust is an afterthought for the engine and chassis builders, yet its design and construction impacts significantly upon car performance. During the period at pretoria university i came into contact with sae papers and the work of professor gordon p blair and the research group at the queens university of belfast. Design and simulation of twostroke engines book osti. His work has been so extensive in this area that it became necessary to publish a greatly expanded book on the topic. The paper discusses the design of a racing motorcycle engine to compete in world superbike racing. If you build things today, and you want to build twostroke engines tomorrow, this book will tell you how. Complete calculations for professor gordon blair 3 stage diffuser expansion chamber. Since that time, professor blair has developed substantive new theories related to the twostroke engine. For approximately the last 14 years we have been primarily engaged in developing computer software to design engine valve trains. Blair and hans hermann is harnessed to provide a very powerful design tool. This software packages may also be available on the internet as the first book is quite old. We believe that using this software will help your 2stroke development or racing results on different types of competition. Blair law offices individual and estate tax department.
A worked example is provided for my old yamaha rz350 29k, 1985, which is almost identical to he yamaha rd350ypvs lcii 31k. Design and simulation of fourstroke engines r186 this book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission. Blair, professor emeritus at the queens university of belfast, have entered into a technical and consulting agreement for the exclusive worldwide license to use gpb engine simulation software source code for optimums two and fourstroke product development and for professor blairs. Design and simulation of two stroke engines by gordon blair. The value that is of most interest to the engine tuner is the peak squish velocity. Blair is the author of the most challenging books regarding two strokes engines. Since 1990, 1 have written two books on the design and simulation of twostroke engines. Design simulation of two stroke engines by gordon p blair. Blair, 9780768004403, available at book depository with free delivery worldwide. Blair law offices private client department and audrey michelot, of counsel gordon s.
Professor blair retired from queens university in 1996 as professor emeritus. Design and simulation of fourstroke engines by gordon p. The basic design of twostroke engines offers practical assistance in improving both the mechanical and performance design of this intriguing engine. From a 49cc racing engine, to a gp 125 engine, or a 1500 mercurial triple engine, or a 250 kart engine, racingsm software suits all. This model is based on the theory within the various chapters of the book. Design and simulation of fourstroke engines ebook, 1999. The basic design of twostroke engines sae international. Aug 01, 1999 this book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission. They have worked on developing games for the super nes, game boy color, game boy advance, pocket pc, pc, digiblast, nintendo ds, playstation portable and nintendo 3ds. The engine simulation model will simulate a singlecylinder naturallyaspirated fourstroke engine with the following attributes. It is a fabulous guide for those with engineering backgrounds.
The calculation of this basic data is shown as eqns. Engine software was founded in 1995, and with that is the oldest game developer in the netherlands still in business. Virtual engines engine simulation software, virtual 4. In addition, this comprehensive publication features a computer program appendix of 28 design programs, allowing the reader to recreate the applications described in the book. The way to calculate the return timing and length of the negative wave in a 2 stroke expansion chamber is by this formula. This book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so as to provide the required performance characteristics such as power, torque, fuel consumption, or noise emission. This is superb detail to accompany campus lecture by dr. The basics an engine is a device with a number of cylinders ncyl each with a cylinder bore b and a stroke s. Article prepared by alexis madier, partner gordon s. For some background reading, the sae have a paper 1994 motorsports engineering conference proceedings paper no. Gordon blair on acceleration testing a kart engine. It is an enhanced and expanded version of the original saemarketed software.
While the majority of the book is devoted to the design of the sparkignition engine, there is also comprehensive treatment of the diesel or compressionignition engine. During my final year at school 1975 i got hold of a copy of gordon jennings twostroke tuners handbook and realized that there was science behind the processes. Not many in the fourstroke engine industry will read such books on the assumption that they are not relevant to them. This product is a software package to accompany prof blairs book, design and simulation of fourstroke engines. Optimum power technology is both our mission and our commitment to our customers.
Computer software can help you with the design, but dont expect super design from the software. On page 51 gordon uses the term onepercenter, the term refers to an american motorcyclist association quote that 99% of motorcyclists were lawabiding. Since that time to this he forged ahead with his interests in engine design and simulation. Going from memory here, but the problem is that the speed of the wave is affected by the pressure, so that waves of higher pressure travel faster down the pipe than lower pressure pulses. A major section provides readers with a fundamental understanding of unsteady gas dynamics. Near the end you will be presented with the latest and best software for design and analysis of 2 stroke pipes. In the may 2009 issue 038 of race engine technology magazine, prof.
Blair 1996, hardcover at the best online prices at ebay. Design and simulation of twostroke engines by gordon p. View the profiles of professionals named blair gordon on linkedin. By the end of the nineteen sixties gordon blairs research work on engines had produced validated computer simulation programs which were helping design more powerful engines and providing theoretical and design insights that were giving the queens university team advantages over even the biggest factory motorcycle teams. A 250cc water cooled twin cylinder engine with this rotary sleeve valve was designed and built from scratch and first road tested in 1969. Gordon p blair this book provides design assistance with the actual mechanical design of an engine in which the gas dynamics, fluid mechanics, thermodynamics, and combustion have been optimized so. The author, having designed and developed many twostroke engines, offers practical and empirical assistance to the engine designer on many topics ranging from porting layout, to combustion chamber profile, to tuned exhaust pipes.
This simulation program deals with many aspects of engine design related to the cylinder head. Pdf acceleration test method for a high performance two. This product is a software package for the design, and design for manufacture, of components within or attached to the cylinder heads of fourstroke engines. This gives the engine a swept volume vsv for each cylinder and a swept volume for the entire engine vtsv. Optimum power technology is a global company with decades of experience developing and delivering innovative and cost effective automotive modelbased simulation design tools, optimization software, and reciprocating compressor products and services. The application of the model is discussed in chapters 57.
This class of motorcycle racing is based on production machines with fourstroke engines only. Blair download design and simulation of four stroke engines by gordon p. This product is a software package to accompany prof blair s book, design and simulation of fourstroke engines. Blair, professor emeritus at the queens university of belfast, have entered into a technical and consulting agreement for the exclusive worldwide license to use gpb engine simulation software source code for optimums two and fourstroke product development and for professor blair s continuing support for new theoretical attributes, improvements and upgrades for its software. The software uses mathematical formulas that are approximations of reality, and the. The information used in the programs calculations was taken from the books the basic design of the two stroke engine and the book design and simulation of two stroke engines. Any technique which will assist the engine to run reliably at a high compression ratio on a given fuel must be studied thoroughly and, if possible, designed into the engine and experimentally tested. View the profiles of professionals named gordon blair on linkedin. Design and simulation of fourstroke engines gordon p. Blair, charlie mccartan and melvin cahoon discuss, in the third of a threepaper special investigation, valve spring design for race engines. This document provides a worked description to using the software provided in the books by professor gordon blair, available here. To view this article click on the magazine cover or the article title above 3.
The stateoftheart is presented in such design areas as unsteady gas dynamics, scavenging, combustion, emissions and silencing. How program makers could of overlooked the utmost importance of the timing of the waves in relation to the port timings is beyond me. Also available r186 software and r186m engine simulation model. It is less helpful for those with a more casual interest. This is demonstrated using engine simulation software and the finest detail of the design of the engine and its ducting are supplied within the discussion. Design and simulation of twostroke engines is a unique handson information source.
Bookmark file pdf design simulation of two stroke engines by gordon p blair design simulation of two stroke engines by gordon p blair transfer duct tales road to the most powerful two stroke ever part 3 modeling the transfer duct cores for the new cylinder in fusion 360. It can be applied to a wide variety of situations from simple industrial engines to complex racing engines. He is the man behind the modern two stroke engine and the pioneer of software programs on engine development. Initially he worked with the us company optimum power technology to commercialise the engine design software he had developed. Contents this site contains information on both software products, 4sthead and 4stsoft. Development of the qub 250cc twin cylinder it was in june 1967 that gordon blair, m johnston and their associates at queens university belfast conceived a new type of inlet valve for a twostroke engine. The program creators had read and used some of gordon jennings generality statements while ignoring the fine points that blair had written that make pipe making a thing of precision and not guesswork. Technical paper measurement and computation of the characteristics of progressive valve springs. The rules allow three engine variants to be used, a 750 cm3 fourcylinder engine, a cm3 twincylinder engine, and a 900 cm3 threecylinder engine. Blair law offices gildo pastor center 7, rue du gabian bp 449 mc 98011 monaco cedex tel. Shown immediately below is a scanned page from the book titled the basic design of twostroke engines by professor gordon blair queens university of belfast. A lesser work would have surely passed into nostalgia heaven long ago. Thefundamentaltheoryofunsteady gas dynamics is thesame for twostroke andfourstroke engines, butirepeat myself asyet another stanza hasalready dealt.
Design and simulation of twostroke engines gordon p. Blair, 1560910089, 9781560910084, buy best price the basic design of twostroke engines, gordon p. Blair of queens university belfast, and published by the society of automotive engineers. At professor blair and associates gordon was senior associate, and to date, he has succeeded in influencing the design offices of over 70 companies all around the world who use our software he has also visited. His work has been so extensive in this area that it became necessary. The goal of this project is to build a gpllicensed, open source, onedimensional mathematical engine modeling suite referencing the works of gordon p. Apr 28, 2015 this is a modified version of an article by jack kane which appeared in issue 036 of race engine technology magazine. Oh yeah i think you are referring to prof gordon blair s software and not tony blair s software the latter was the prime minister of the uk.
Specific text resources are linked in the required reading page. Design and simulation of four stroke engines by gordon p. The exhaust system can be a vital tool for optimizing the performance of the engine, through the wa. Asking for expressions of interest in a free 2 stroke pipe calculator software. Velosolex s 3800 2stroke tuning and engine design books.