Article | REF: BM2650 V1

The small 2-stroke engine Subtitle - Specific features and fields of application

Author: Pierre DURET

Publication date: July 10, 2022

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4. Conclusions: what does the future hold for the light 2-stroke engine?

2-stroke engines are widely used on the water, on land, in the air, and in the hands, from the smallest 2 cm model engine to the most powerful. 3 to the largest marine engines.

Unfortunately, they have long suffered from a bad image, perfectly justified by the considerable unburnt hydrocarbon pollution caused by carburettor engines (fuel short-circuiting and misfiring).

Nevertheless, they offer important advantages inherent to the 2-stroke cycle: simplicity, lightness, compactness, low friction and pumping losses, double cycle frequency and high specific power.

A new generation of 2-stroke engines with direct fuel injection, sometimes combined with advanced combustion processes such as CAI combustion and innovative engine design (opposed pistons, etc.), has been developed...

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Conclusions: what does the future hold for the light 2-stroke engine?