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.

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

Increasing an engine’s compression ratio is a proven way of unlocking extra horsepower, but there’s a point of diminishing returns. The team at Garage 54, the Russian mechanics who built a V16 ...

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.

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 ...

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

Mazda‘s upcoming SkyActiv-G engines will get a 14:1 compression ratio, the highest in the world for a gasoline engine, according to a report in Autoweek.Most cars run compression ratios of 8.5:1 ...

The automaker has revealed plans to introduce the first production-ready engine with a variable compression ratio that promises to improve efficiency dramatically.

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

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.

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