Concept Engine Engine Mazda 
Green Car Congress
OCTOBER 31, 2009
Schematic model of a wave disk engine, showing combustion and shockwaves within the channels. 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 Wave Disc Engine. Source: MSU.
Green Car Congress
OCTOBER 18, 2012
Isuzu D201 35 hp diesel engine (left) and the LiquidPiston 40 hp X2 Prototype (right). Other features of the X2 include: Quiet operation: engine lacks poppet valves and over-expansion minimizes exhaust noise. to the thermodynamics, not to a particular engine. Click to enlarge. LiquidPiston, Inc.
Green Cars News
APRIL 5, 2010
The New York International Auto Show saw Mazda showcase a series of new engine and transmission concepts that improve fuel efficiency and lower emissions. Known as the SKY Concept engines and transmissions, they will be rolled out from 2011.
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