stands for New Exhaust Valve & Intake System, while it sounds basically like a simple modification to current technology, is actually attempting to reinvent the ICE. From fourteen years of research and testing by Cesare Bortone, the new engine design claims to solve lots of problems. It is smaller and lighter, even though being built of steel, versus the aluminum-magnesium alloy BMW
R6 3.0L block they tested it against, and only has two cylinders. The cylinders themselves are not as we know them, as they are apparently donut-shaped. According to its claim, the engine can range in its compression ratio anywhere from 7:1 to 38:1, which seems problematic at best, but likely has the most to do with the large power output from such small displacement. The stroke is considerably shorter, and uses energy of the engine's exhaust vacuum to assist in the combustion cycle, also enabling it to produce six times the number of power strokes per revolution than that of an ordinary four-stroke ICE. Also, the engine is a modular design, which, according to the NEVIS team, enables a manufacturer to easily configure multiple arrays of cylinders (2, 4, 5, 6, 8, etc.) in an engine from the same facility, even on the same assembly line, streamlining construction and production costs.
That's all well and good, you say, but it still burns gas just like everything else, and oil is running out. Well guess what, greenies: the NEVIS engine can apparently burn any type of fuel, from diesel
, to any mixture of biofuels
, to even hydrogen
. The most basic explanation I can make out of the technical overview
is that they took elements of both the regular gas combustion cycle and the diesel cycle, added their own innovations, and made the most efficient, versatile engine ever made. Sounds too good to be true, maybe, however the 1.0L prototype was successfully tested and run at the conclusion of the 2.1 million Euro grant-funded phase last year, and NEVIS Engine
Company, Ltd. was subsequently formed to further develop and commercialize the engine design, as well as "manage all related intellectual property." Patents have been issued in both Europe and the U.S.
[Source: NEVIS - Thanks for the tip, wouter!]