The differences between gasoline and diesel engines lie not only in their fuels, but in how those fuels are ignited. Gasoline engines use spark plugs, while diesels simply use compression. But it is ...

Not all gasoline engines need spark plugs to ignite their fuel. A process called homogeneous-charge compression ignition (HCCI) uses compression to ignite the fuel, just like in a diesel engine.

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 ...

Researchers from the Center for Information Technology Research in the Interest of Society (CITRIS) are developing more efficient engines for cars. They are specifically working on Homogeneous Charge ...

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 ...

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 ...

It is a technology that melds a diesel engine's high efficiency and massive torque with a gasoline engine's low emissions and smooth running. And it could be the next big evolution of the internal ...

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 ...

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 ...