The compression ratio isn’t just a number: it’s one of the greatest determining factors in engine building. Compression ratio determines the type of fuel, how much boost, and has a significant ...

This engine has an 8.84:1 compression ratio. When using this formula, make sure to express domed piston cc's as a negative number.

How do you calculate a compression ratio, and what’s the ideal number for your build? Let’s find out.

In Two Stroke Spark Ignition engines the thermal efficiency increases with increase in compression ratio. Also, with higher compression ratios the lean burning limit increases because of the reduction ...

In an effort to both increase engine efficiency and generate new, consistent, and reliable data useful for the development of engine concepts, a modern single-cylinder 4-valve spark-ignition research ...

An engine's compression ratio is actually a theoretical number. This ratio compares the cylinder volume of the piston at bottom dead center (BDC) versus top dead center (TDC).

The MCE-5 engine from MCE-5 Development in Lyon, France varies its compression ratio and uses a combined gear and rod-crank mechanism.

Variable Compression Ratio Engines have been some sort of a Holy Grail, and now Porsche proposes a viable solution for this ...

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.

Infiniti will showcase its new variable compression ratio engines – the world’s first in series production, it claims – at the 2016 Paris motor show. Badged VC-T (Variable Compression ...

Unlike auxiliary components like turbochargers or 48-volt electrical systems that enable mild hybridization and engine-off highway coasting, Infiniti's variable compression ratio engine changes ...