What does VC-Turbo engine mean?

[Alexandra]

VC stands for Variable-Compression, meaning it's a variable compression ratio engine. Simply put, the compression ratio is the ratio between the cylinder volume when the piston is at its lowest position in the cylinder and when it's at its highest position. Since the inception of internal combustion engines, the compression ratio has been fixed due to the unchanging relative positions of the piston, connecting rod, and crankshaft. Extension: To avoid the issue of oil dilution by gasoline, the VC-Turbo engine also adopts a hybrid fuel injection technology that combines manifold injection and direct cylinder injection. Under conditions like cold starts and low water temperature, only traditional manifold injection is used. This effectively enhances the mixing of atomized fuel with air, prevents incomplete combustion, reduces particulate pollutant emissions, and inhibits carbon deposit formation. The electrically driven variable valve timing system in the intake part can achieve the Miller cycle, which helps in lowering fuel consumption to some extent and allows for higher thermal efficiency of the engine.