Green Car Congress

JUNE 1, 2013

The combination of discrete, asymmetrically sized cylinders and fully variable valvetrain promises the ability to vary displacement ratios, bore-stroke ratios, compression-expansion ratios, compression-expansion phasing, and gas transfer phasing for engine optimization—i.e., a more efficient internal combustion engine.

Engine 249

Engine Personal 2002 2004 249

Green Car Congress

MAY 8, 2014

At equal pressure ratios, the Brayton Cycle is inherently more efficient, but even more so at the extremely high 56:1 or greater compression ratio of the Clarke-Brayton engine. John Clarke presentation at Engine Stretch Efficiency Colloquium, 2010. Concept Engines Engines Natural Gas' and O’Malley, E.

Engine 345

Engine Concept Design Exhaust 345

Green Car Congress

FEBRUARY 5, 2010

Thermochemical exhaust heat recuperation (TCR) in an internal combustion engine could result in substantial boosts in second-law efficiency (as measured in terms of single-stage work output from an ideal IC engine) for a range of fuels, according to a new study by researchers at Oak Ridge National Laboratory (ORNL). Resources.

Exhaust 249

Exhaust International Engine Concept 249

Green Car Congress

APRIL 20, 2009

The one-liter, naturally-aspirated gasoline prototype is expected to produce up to 80% fewer criteria pollutants than a typical internal combustion engine. When fully developed with its turbocharged and air-hybrid components, the engine is expected to achieve significant gains in fuel efficiency. Engine speed.

Engine 170

Engine San Antonio Production Concept Engine 170