Porsche patents 6-stroke engine

Porsche patented a 6-stroke engine Outside of early Saabs, most gas-powered car engines are a 4-stroke Porsche's 6-stroke patent seems to indicate it could eke more power out of an engine Unless you drive an early Saab, your car probably has a 4-stroke engine. But Porsche wants to see if more strokes could be better. The automaker has filed a...

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