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 ...

How to Calculate Compression Ratio from Scratch As an example, let’s calculate the CR for a popular big-block Chevy application.

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.

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 ...

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 ...

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

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.

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

That's because Infiniti is planning to roll out the variable compression ratio engine for its next generation of cars.

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 ...