In the race to field energy-efficient vehicles, don’t count out internal combustion technology just yet. GM recently debuted its homogeneous-charge-compression-ignition (HCCI) system in two drivable ...

Homogeneous Charge Compression Ignition. What is the future of gasoline engines, or internal combustion engines? HCCI is an alternative to traditional gasoline or diesel engines, which doesn't use a ...

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 ...

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, ...

Conventional wisdom suggests that our faithful internal combustion (IC) engines are heading the way of the buggy whip. The lithium-ion battery has arrived, emissions standards are tightening, and ...