SkyActiv 2 engine that is cleaner than electric

[Greg Bernhardt]

Cleaner than electric? Mazda talks up gasoline engine fuel economy ambitions for SkyActiv 2

At Mazda, the engine of the future is called the SkyActiv-G Generation 2, a follow-up to Mazda's SkyActiv-G Generation 1. For SkyActiv-G Generation 2, Mazda will adopt homogeneous charge compression ignition (HCCI) and an even higher compression ratio of 18:1 over SkyActiv-G Generation 1 high compression ratio of 14:1. Mazda said on its site that increasing the compression ratio considerably improves thermal efficiency. According to Autocar, it is likely SkyActiv-G Generation 2 technology could arrive in production before the decade is out..
For SkyActiv-G Generation 2, Mazda will adopt homogeneous charge compression ignition (HCCI) and the higher compression ratio of 18:1. Autocar said The HCCI system works in a way similar to a diesel engine, using piston compression rather than a spark plug to ignite the mixture in the chamber.

http://phys.org/news/2014-03-cleaner-electric-mazda-gasoline-fuel.html

 

[Ranger Mike]

Sounds like what I read in 1983.
What engine is smother than an electric motor, meets all emission standards without electronic equipment, produces 2 horsepower per cubic inch of engine, can deliver 60 miles per gallon and weighs only 170 pounds?

Hot Vapor Cycle Engine - HVCE
The Adiabatic Engine developed by Henry “Smokey” Yunick in the late 1970s. Summary - He super heated gasoline and air mixture and introduced it into the combustion chamber WITHOUT DETONATION.

 

[Highspeed]

Perhaps someone finally realized electric isn't all that clean?

 

[Ranger Mike]

he said wryly with a nod and a wink