Why variable compression ratio matters Today's gasoline-engine cars compress the outside air to about a tenth its original volume, a 10:1 ratio, inside each cylinder.

Forget variable length intakes and variable valve timing, Infiniti is going all the way and introducing variable cylinder compression ratios. The new VC-T turbo engine automatically adjusts ...

But too high a ratio causes knocking—premature detonation of fuel-air mixture during the engine's compression stroke caused by high cylinder temperatures.

Le motoriste suisse WinGD et le constructeur sud-coréen Hanwha Engine ont finalisé la production du premier moteur marin ...

N issan’s original variable-compression powerplant is an absolute marvel of engineering. This little four-cylinder wonder is ...

Car manufacturers are delving deep into their boxes of tricks to make internal combustion engines more efficient. Infiniti unveiled a variable compression ratio engine last year, and hybrid technology ...

The world's first production continuously variable compression engine setup, dubbed VC-T, will be first used in the Infiniti Q50 in 2018.

Strictly defined, compression ratio is the total volume above the piston at bottom dead center (BDC), divided by the total volume above the piston at top dead center (TDC). First, let's look at the ...

This lowers the compression ratio to 8.1, but because the turbocharger kicks in at the same time, the engine's power output increases.

An interesting patent has been filed by Toyota for an engine with variable compression.The patent is for an engine with variable length connecting rods.The connecting rod features two hydraulic ...

PHOENIX -- When the next-generation Infiniti QX50 crossover arrives next year as a 2019 model, it will be powered by a 2.0-liter turbocharged four-cylinder engine introducing a technology never seen ...