Let's discuss something that is well known by diesel mechanics and hard-core enthusiasts but may not be fully understood by new diesel owners or people who may have heard the term "compression ...

A.Here's a pressure-volume diagram for a combustion engine. Although rough, it is an approximation of the so-called air-standard cycle. '' Point (a) is at atmospheric pressure, after which the air is ...

Any certified gearhead knows that diesel engines do not use spark plugs. But why not? If power in an engine is created by combustion or explosion of flammable liquids, won't a spark plug in a diesel ...

With the combustion chamber being the root of all horsepower, it only makes sense that you start spec'ing an engine build there. One of the key variables in engine building is compression ratio, or ...

When Japanese automaker Mazda debuted the fourth-generation Mazda3 in 2019, it came with the brand's Skyactiv-X engine. This revolutionary powerplant combines the attributes of spark ignition and ...

Apart from the very curious, not many people ask why diesel engines, compared to gasoline, run higher compression ratios. The argument is reasonably straightforward and starts with fuel ...

Mazda's novel compression-ignition engine once looked like a savior for internal combustion. Years later, it hasn’t caught on. More than six years ago, Mazda debuted a technology that promised to ...