Inifiniti’s New QX50 Unique Variable Compression Ratio Engine

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2019 Infiniti QX50 is powered by Infiniti’s new 2.0-liter VC-Turbo, the world’s first production-ready variable compression ratio engine – one of the most advanced internal combustion engines ever created.

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NFINITI Variable Compression Turbo eliminates the compromise between selecting either a powerful engine with lower fuel economy or a fuel-efficient engine with less engine power.

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Like a runner’s body, the engine’s multilink system flexes to lower the compression ratio when more horsepower is demanded and relaxes to raise the compression ratio when fuel efficiency is desired.

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When engine power is required, the compression ratio can lower to 8:1. When fuel efficiency is desired, the compression ratio can increase to 14:1. For all other needs, the engine can adjust to anything in between.

The VC-Turbo changes its compression ratio seamlessly with an advanced multi-link system, continuously raising or lowering the pistons’ reach to transform compression ratio – offering both power and efficiency on demand.A high compression ratio gives greater efficiency, but in certain applications poses the risk of premature combustion (knocking). A low compression ratio allows for greater power and torque, and avoids knocking.