Green Car Congress

OCTOBER 31, 2009

The wave disc engine, a new implementation of wave rotor technology, was earlier developed by the Michigan State group in collaboration with researchers from the Warsaw Institute of Technology. The WDG also can reduce carbon dioxide emissions by as much as 95 percent in comparison to modern internal combustion vehicle engines.

Michigan 316

Michigan Engine Universal 2004 316

Green Car Congress

MAY 23, 2009

Schematic of downsized and supercharged four-stroke hybrid pneumatic spark injection engine. The injection of the additional air during transients can overcome the poor driveability usually associated with heavily downsized and supercharged engines, the team notes. The engine has two intake and two exhaust valves per cylinder.

Downsizing 170

Downsizing Concept Engine Hybrid 170

Green Car Congress

NOVEMBER 12, 2018

Since internal combustion engines will remain the primary mode of choice for mobility in the foreseeable future, both alternative (renewable) fuels and high-performance combustion concepts/ engines using fuels adapted for that purpose will be preferred for reducing the combustion impact on climate change.

Transportation 255

Transportation Future Fuel Climate Change 255

Green Car Congress

OCTOBER 29, 2019

An adaption of cylinder de-activation technique called ECONAMIQ over-expansion can be applied to engines to improve fuel efficiency. Using the pressure from the exhaust gas from the active cylinders, the ‘idle’ cylinders could be expanded to extract more work out of the engine during partial load operation.

Fuel 186

Fuel San Jose 2019 Engine 186

Green Car Congress

APRIL 17, 2015

This technology will allow researchers to develop future combustion engines free from the piston motion constraints dictated by the crankshaft. Already validated at proof-of-concept level, Libertine’s new hardware uses production-feasible component designs suitable for automotive hybrid powertrain modules, such as range extenders.

Building 150

Building Concept Engine Engine Concept 150

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

JANUARY 22, 2015

Topics addressed include: advanced batteries (including manufacturing processes) and electric drive R&D; Lightweight materials; Advanced combustion engine and enabling technologies R&D; and Fuels technologies (dedicated or dual-fuel natural gas engine technologies).

Fuel 150

Fuel Hydrogen Vehicles Carbon Fiber 150