Saab says its always innovation-minded engine designers have had the idea of developing variable compression engines for some time. The company says initial discussion about variable compression began in the early 1980s. Work began in earnest, says Saab, in the last part of the '80s, with a modest development program. The initial patent application came in 1990. The first experimental variable-compression engine displaced 2L, and Saab brags that it developed much more power and torque ...

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