In this video, we're doing a detailed comparison of petrol, or spark ignition, and diesel, or compression ignition engines.

As an engineering student in late 19th-century Bavaria, Rudolf Diesel found little promise in steam and internal combustion ...

Mazda has detailed the next-generation of its SkyActiv engine family, which will feature innovative compression ignition technology.While the new SkyActiv engine is still under development, Mazda ...

Infiniti has a variable compression ratio engine, but Mazda has a different solution. It's set to release the first commercial compression-ignition gasoline engine, dubbed SkyActiv-X.

Unlike some other automakers’ previous attempts at gasoline-burning compression ignition, Hyundai will not fit the engine with any spark- or glow plugs.

Mazda’s powertrain team has brewed up a fancy new engine that, like a diesel, uses compression to activate the combustion process. In a press release on the new tech, Mazda tells us just how ...

A compression-ignition engine's near simultaneous combustion tends to burn the intake charge more completely and at lower combustion temperatures (1,200 degrees F anticipated), virtually ...

In the HCCI engine, the spark-ignition mode would be used when high power is needed and the compression-ignition mode would provide efficient cruising power. The spark-ignition part is pretty easy.

However, one basic difference is that compression-ignition engines utilize a much higher mechanical compression ratio, typically on the order of 14-22:1.

GlobalData uncovers the leading innovators in homogenous charge compression ignition engines for the automotive industry.

Homogeneous charge compression ignition (HCCI) engines combine a diesel's torque and fuel efficiency with a gas engine's cleaner emissions. The HCCI technique has been a goal of automakers since ...