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Libertine FPE builds demo prototype of linear free piston generator

Green Car Congress

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.

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Concept: AET Reaches Final Development Stage of OX2 Barrel Engine

Green Car Congress

Upon failure of its previous power electronics unit, an outside electrical engineering firm was hired to write the new specifications. The company is poised to proceed with the production of two new power electronics units for fitment with the OX2 engine/generators. Tags: Concept Engines. OX2 animation files.

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Australian Cam-Drive Gasoline Engine Reaches 39.5% Efficiency in Independent Testing; Potential for Production Engine in China

Green Car Congress

The bearings are mounted on the underside of the two inter-connected pistons, which maintain the desired bearing-to-trilobe clearance throughout the stroke. The counter rotation is performed by a reverse gear set at a 1:3 ratio shaft providing two strokes of a piston to 360 degrees of output shaft rotation—the same as a conventional engine.

Engine 240
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Concept: Honda RD Developing Variable Compression Ratio Engine with Dual Piston Mechanism

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In testing in an otherwise conventional production 2.0-liter, liter, 4-cylinder engine, the dual piston mechanism was able to adjust the engine from a CR of 9.6 Combining the high compression ratio with the Atkinson cycle, the engineering team demonstrated a 7.4% Tags: Concept Engines Engines.

Honda 150
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Concept: Garric Rotary Variable Compression Ratio Engine

Green Car Congress

Basic components of the Garric engine. A pair of Florida entrepreneurs, Rick Ivas and Gary Kelley, are developing the concept of the Garric engine: a rotary, variable compression ratio engine promising a combination of high power and torque and low fuel consumption. In August, Garric Engines. Click to enlarge.

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