Design and simulation of four stroke engines by gordon p. For manufacter and tuner of two stroke engine, ntproject has developed a series of software to help in the development of the engine and its components. The basic design of two stroke engines internet archive. Gordon blair programmed the 3d simulator named virtual two.
I found most other software work on outdated blair and jennings formulas. It enables tuners to combine all the engine components together to simulate dyno runs on the computer so they can save time machining metal and swapping parts on actual dyno runs. Software for optimal setting and design of engines and. I knew of him mostly through the software development. The author, having designed and developed many twostroke engines, offers practical and empirical assistance to. Blairs the basic design of twostroke engines software. Design and simulation of fourstroke engines by gordon p. If you build things today, and you want to build two stroke engines tomorrow, this book will tell you how. Design and simulation of twostroke engines is a unique handson. 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 each one in turn to properly train and guide them in its use. A further important mechanical design parameter is the mean piston speed cp, which is calculated by eqn. Blair design and simulation of twostroke engines by dr. 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. The twostroke engine continues to fascinate engineers because of its fuel economy, high power output, and.
But because of the limited worldwide activity in twostroke engine development, program sales were limited and further development was curtailed. This engine modelling software allows for the complete prediction of engine. I have some 2 stroke tuning stuff in pdf when youre done with jennings. With the traditional lubrication technique of mixing oil into the fuel, they also have the advantage of working in any orientation, as there is no oil reservoir dependent on gravity. His work has been so extensive in this area that it became necessary to. 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. He will be fondly remembered, but greatly missed by all his family, friends and colleagues. Design and simulation of twostroke engines sae international.
If we were discussing twostroke engines that number 2 would be unity in eqn. The ideas and theory in the book are covered by a set of computer programs. 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. Sae originally published author gordon blairs the basic design of twostroke engines in 1990. Design and simulation of twostroke engines gordon p. 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. Blair died on october 21st 2010 after battling cancer for several years. Bigger carburetors, higher compression ratios, altered port timings and expansion. The information presented extends from the most fundamental theory to pragmatic. Gordon purves blair was born in larne co antrim in 1937 and educated at larne grammar school. Professor gordon blair died on october 21st 2010 after battling cancer for several years. Since that time, professor blair has developed substantive new theories related to the twostroke engine. Blair did do most of his research on the twostroke from what i gather.
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. Design and simulation of twostroke engines premiere. This software packages may also be available on the internet as the first book is quite old. Download design and simulation of four stroke engines by gordon p. There are many ways to boost the power, one of which is by installing a tuned pipe. From the bellmouth of the carburetor, to the insert of the reed valve and the reed petals, at the studied of the cylinder ports, until to the balance of the crankshaft, thanks at our software you could optimize your engine and to develop new. Graham bells two stroke tuning book gordon blairs two stroke tuning book gordon jennings also had a book all this stuff is old now but its advanced compared to production saws, and they cover the basics well. Twostroke petrol engines are preferred when mechanical simplicity, light weight, and high powertoweight ratio are design priorities. It is a fabulous guide for those with engineering backgrounds. Split your calculated 2 stroke exhaust up to 42 sections with regular length or even more with irregular lengths.
If required, the units of any data value in all equations are shown as subscripts. Great tool for those who are building exquisite format exhausts, one of the largest benefits of this module is that it can be used with any exhaust formula results. Complete calculations for professor gordon blair 3 stage diffuser expansion chamber. 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 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. Full text of the basic design of two stroke engines. Amazon used the first of two books by gordon blair on the theory of twostroke behaviour. This is superb detail to accompany campus lecture by dr. The port data provided here was derived from the original velosolex s 3800 information, 2stroke tuners formulae, computer design software and the following books. 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.
It is less helpful for those with a more casual interest. 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. Design and simulation of twostroke engines premiere series. The basic design of two stroke engines by gordon p. Two stroke tuners handbook 2 another mistake commonly made, sometimes even by those who have enjoyed some success in modifying twostroke engines, is to believe in a kind of mechanistic magic. Since 1990, 1 have written two books on the design and simulation of twostroke engines. Not many in the fourstroke engine industry will read such books on the assumption that they are not relevant to them.
New feature of racingsm software, the 2 stroke exhaust segment splitter. Buy design and simulation of twostroke engines premiere series books reprint by gordon p. He will be fondly remembered, but greatly missed, by all of his family, friends and colleagues. The complete engine geometry together with these two exhaust systems is simulated using an engine simulation software package virtual 4stroke and the experimentallyrecorded exhaust pressure diagrams and performance characteristics of power, torque, etc. This document provides a worked description to using the software provided in the books by professor gordon blair, available here. Im porting the software from the back of the book and ive found some errors in the listings. Design and simulation of twostroke engines book osti. Velosolex s 3800 2stroke tuning and engine design books. Blair is the author of the most challenging books regarding two strokes engines.
We design, modify, and race hi perf 2 stroke rc marine engines on heavy nitromethane percentages. I have the software that comes with blairs second book, design and simulation of two stroke engines. I bought a new two stroke piston engine on special. Top kodi archive and support file vintage software community software apk msdos cdrom software cdrom software library. The basic design of twostroke engines offers practical assistance in improving both the mechanical and performance design of this intriguing engine. Blair, 9781560910084, available at book depository with free delivery worldwide. The combustion chamber is centrally located and has a squish area of 40% and a squish clearance of 0. Two strokes can function with significantly better power if they are aided in these 4 ways. Blair, 1560910089, 9781560910084, buy best price the basic design of twostroke engines, gordon p. He is the man behind the modern two stroke engine and the pioneer of software programs on engine development. The way a two stroke motor works causes them to be f. However, gordon knew that the future of gp racing was 2stroke engines and. They are so simple and fun that ive always enjoyed tinkering with them.
In a twostroke engine, every stroke leaving top dead center is an expansion stroke i. The litterature on which the website is based on, are the books. A worked example is provided for my old yamaha rz350 29k, 1985, which is almost identical to he yamaha rd350ypvs lcii 31k. The basic design of two stroke engines blair, gordon p. The first of two books by gordon blair on the theory of twostroke behaviour. Gordon purves blair was born in larne county antrim in 1937 and educated at larne grammar school. This is demonstrated using engine simulation software and the finest detail of the design. There is a lot of overlap in theory and practice between the two and fourstrokes as the laws of physics apply equally, so im not surprized he would have also been interested in 4t valve systems. The calculation of this basic data is shown as eqns. The exhaust port opens at 83 deg atdc and the peak power speed is 12000 revsmin.