Cool to see this going into production. They say they've been working on it since '96. The mechanism was invented in '98.VC-Turbo - the world's first production-ready variable compression ratio engine
The VC-Turbo engine is the world's first production-ready variable compression ratio engine, transforming on demand. A breakthrough in combustion engine design, the 2.0-liter VC-Turbo engine adjusts its compression ratio to optimize power and efficiency. It combines the power of a 2.0-liter turbocharged gasoline engine with the torque and efficiency of a four-cylinder diesel engine. A compelling alternative to diesel, it challenges the notion that only hybrid and diesel powertrains can deliver high torque and efficiency.
The VC-Turbo offers any compression ratio between 8:1 (for performance) and 14:1 (for efficiency). The engine delivers 268 hp (200 kW) and 280 lb ft (380 Nm), an expected best-in-class combination of four-cylinder power and torque. Front-wheel-drive models offer a 35% improvement in fuel efficiency over the previous V6 gasoline QX50; all-wheel-drive models offer a 30% improvement.
*Note oil jet in image above.