The Dutch company Gomecsys BV, under the technical direction of Bert de Gooijer. Ing., has developed a variable-compression engine that is claimed to cut fuel consumption by up to 40%. The reciprocating piston engine uses a controllable intermediate gear set – acting on each set of two paired pistons – located between the connecting rod lower ends and output shaft. In 2000, Saab unveiled prototype VCR engine that tilted cylinder head to achieve compression ratios from 8:1 to 14:1. ...

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