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The Basic Design of Two Stroke Engines

The Basic Design of Two Stroke Engines

The two-stroke engine continues to fascinate engineers because of its fuel economy, high power output, and clean emissions. Because of these optimal performance characteristics, the engine is on the threshold of new development, as carmakers worldwide seek to utilize technology resulting from two-stroke engine research in new applications.

The Basic Design of Two-Stroke Engines discusses current principles of automotive design specific to this engine type. This authoritative publication covers fundamental areas such as gas dynamics, fluid mechanics, and thermodynamics, and offers practical assistance in improving both the mechanical and performance design of this intriguing engine.

Contents include: Introduction to the Two-Stroke Engine; Gas Flow Through Two-Stroke Engines; Scavenging the Two-Stroke Engine; Combustion in Two-Stroke Engines; Computer Modelling of Engines; Empirical Assistance for the Designer; Reduction of Fuel Consumption and Exhaust Emissions; Reduc- tion of Noise Emission from Two-Stroke Engines; and Computer Program Appendix.

The use of the two-stroke engine in automobiles has had an interesting history, and some quite sophisticated machines were produced in the 1960's, such as the Auto-Union vehicle from West Germany and the simpler Wartburg from East Germany. The Saab car from Sweden actually won the Monte Carlo Rally with Eric Carlson driving it. Until recent times, Suzuki built a small two-stroke engined car in Japan. With increasing ecological emphasis on fuel consumption rate and exhaust emissions, the simple two-stroke engined car disappeared, but interest in the design has seen a resurgence in recent times as the legislative pressure intensifies on exhaust acid emissions. Almost all car manufacturers are experimenting with various forms of two-stroke engined vehicles equipped with direct fuel injection, or some variation of that concept in terms of stratified charging or combustion.

The two-stroke engine has been used in light aircraft, and today is most frequently employed in the recreational microlite machines. There are numerous other applications for the spark-ignition engine, such as small electricity generating sets or engines for remotely piloted vehicles, i.e., aircraft for meteorological data gathering or military purposes. These are but two of a long list of multifarious examples.

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