Nissan:
Nissan Infiniti has made a Variable Compression Technology engine that works between compression ratios of 8:1 to 14:1.
It also uses a multi-link crank system as opposed to a conventional crank.
More about Variable Compression Technology at:
The Kinematics of Nissan Variable Compression Technology
Nissan has proved that an engine can be operated at both high and low compression ratios, and with a multi-link crank system.
This start-up is venturing in a direction that Nissan has not taken and has developed a multi-link crank system for high torque output.