HCCI

"That's a substantial difference," said John Hargraves, a senior researcher at HCCI.

HCCI, based in Washington, D.C., tracks insurance claims data on about 80 million people, drawing on information from the government’s Medicare health plan for Americans aged 65 and older and four of the industry’s largest health insurers: UnitedHealth Group, Aetna, now owned by CVS Health Corp, Humana Inc and Kaiser Permanente.

Instead it’s a technology that Mazda calls Skyactiv-X, which is an original take on a concept known as Homogenous Charge Combustion Ignition, or HCCI.

The HCCI engine is similar to a high-pressure, high-temperature diesel engine.

A first step would be with a breakthrough technology called HCCI, or homogenous charge compression ignition, Hitomi said.