VC-Turbo under the hood of QX50 test car.
2.0L VC-Turbo 4-cyl. produces 268 hp and 288 lb.-ft. of torque.
Engine cutaway shows positioning of multilink system.
Lower rod moves on control shaft affecting angle of crankshaft-mounted multilink.
Closeup view of multilink on crankshaft. Note the near-vertical position of con-rod.
Blue and orange lines indicate 6-mm variance in top dead center.
Lower link, multilink, connecting rod and piston.
Multilink is key enabler of variable-compression engine.
Electric motor with 243:1 reduction gear provides torque to change displacement on the fly.
Wide-range Honeywell turbo feeds variable-compression engine.
Driver can monitor engine operation (turbo boost on left, compression ratio on right) via instrument panel.
Camouflaged QX50 test mules performed flawlessly.