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Downsizing

Downsizing

Less becomes more: downsizing stands for reducing the cubic capacity of combustion engines while maintaining their performance. With the help of measures such as turbo-charging or the possibilities offered by variable valve control (scavenging), optimization of the cylinder filling is possible.

As this method provides more oxygen for combustion, the amount of fuel injected can be increased correspondingly:

the same cylinder volume allows the air-fuel mixture to pro-vide more energy. So a comparatively small piston displace-ment is sufficient to release the same energy as a corres-ponding engine of larger dimensions without downsizing.