The High-Performance Two-Stroke Engine

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Item # MB-50458  ISBN: 1844250458




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The mechanical simplicity of the two-stroke engine gives it tremendous appeal, and makes it a tempting target for tuning operations, but the key to successful design, development and modification is knowledge of the engine's operating principles.

This in-depth technical study of two-stroke theory and practice is intended to help would-be engine tuners to better understand the engine and the processes within it, and thereby to obtain improved performance.

Author, Dr. John C. Dixon, C.Eng, C.Phys, is a Senior Lecturer in Mechanical Engineering at the Open University, and has been running and tuning competition two-stroke engines of various sorts for almost forty years.

Topics discussed include:

• A highly detailed, fully illustrated study of all aspects of high-performance two-stroke engine theory, design and tuning.
• Historical development, engine geometry, kinematics, dynamics and fluid dynamics.
• The inlet system, the transfer system, scavenging and the exhaust system.
• Head design and combustion, fuels, performance analysis, tuning.
• The effects of thermal expansion.
• Appendices of important data, material properties and nomenclature.

From the Preface...

The spark ignition two-stroke engine is widely used for competition in both motorcycle and kart racing. The mechanical simplicity of the engine gives it a tremendous appeal. This apparent simplicity certainly makes it a tempting target for tuning. The information presented here is intended to help would-be engine improvers to better understand the engine and the processes within it, and so obtain better results. It cannot be described as light reading throughout, and it is not intended to be read once and discarded. Repeated reading will be required for a full appreciation of the science behind these fascinating engines, and will give the reader who has made the effort of coming to terms with the technicalities a distinct advantage over anyone who has ignored them.

The High-Performance Two-Stroke Engine