In the interest of making sure we all know they've got a mapped strategy for powertrain technology, GM is taking its message on the road. Recently, we got the chance to talk to a few of GM's experts ...

Earlier this month, Japanese automaker Mazda laid out its future powertrain strategy and dropped a massive announcement in the process. In 2019, Mazda will introduce a gasoline-powered Homogeneous ...

This study was conducted to elucidate the combined effects of intake-air temperature (IAT), excess air ratio (λ), and fuel blend composition on the combustion behavior of an HCCI engine. Three butanol ...

The year was 2014 when we first heard Mazda dropping clues about homogeneous charge compression ignition. Back then, top powertrain engineer Mitsuo Hitomi suggested the SkyActiv 2 with HCCI engine ...

It's a technology that's been a sort of Holy Grail in the auto industry for at least a couple of decades. Now Mazda, one of the smallest global automakers, plans to introduce it in a radical new ...

Mazda took the industry by storm when earlier this month it announced plans to introduce gasoline-powered Homogeneous Charge Compression Ignition (HCCI) engines in 2019. HCCI engines are typically ...

Is it possible to design an engine that uses gasoline but switches between spark ignition and diesel-style compression ignition? The engine would combine the efficiency of a diesel engine with the ...

With the SkyActiv suite of technologies, Mazda proved that electrification isn’t the answer to the internal combustion engine’s limitations. Available in naturally aspirated, turbo, and diesel flavors ...

Like most auto engines, HCCI engines inject a premixed charge of fuel and air into the cylinder. But combustion is not set off by a spark plug. Instead, the mixture is compressed until it autoignites, ...

Well, at this year's Hyundai powertrain-tech shindig, I got an update from powertrain honcho John Juriga as to just whatever happened to GDCI. He explained that under compression-ignition operating ...

News that Mazda is hoping for a 30% fuel efficiency gain on an HCCI (Homogeneous Charge Compression Ignition) engine to be introduced on the next generation Mazda3 in late 2018 brings this technology ...