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Achates Power continues development of opposed-piston technology for US Army vehicles

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Achates Power was recently awarded a $5-million contract from the US Army to expand the family of opposed-piston engines for military vehicles. The project, awarded in late-2020, builds upon the success of the Advanced Combat Engine (ACE). to develop the Advanced Combat Engine for the US Army. Earlier post.) —John S.

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Achates Power developing light-duty two-stroke opposed-piston diesel engine: the OP4

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Achates Power, which is developing a family of two-stroke, compression-ignition (CI) opposed-piston (OP) engines, has designed and is developing a light-duty diesel concept engine, the OP4. liter OM651 Euro 5 engine, said Fabien Redon VP, Technology Development at Achates Power, the OP4 design shows a modeled 13.5%

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

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Engineers from Honda R&D Co., presented a pair of papers at the SAE 2009 World Congress describing the development of a variable compression ratio (VCR) engine enabled by a dual piston mechanism. liter, 4-cylinder engine, the dual piston mechanism was able to adjust the engine from a CR of 9.6 and back again.

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New split-cycle concept to control diesel HCCI combustion

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Turbocharged HCPC engine scheme. A team from Universita degli Studi di Pisa (Italy) and Rolf Reitz at the University of Wisconsin-Madison are proposing a novel combustion concept—Homogenous Charge Progressive Combustion (HCPC)—based on a split-cycle principle to control HCCI combustion in diesel-fueled engines.

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Shell develops new concept synthetic lubricant for engines; up to 6.5% fuel economy benefit on urban cycle

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A collaboration between research teams at Shell and Gordon Murray Design (GMD) recently led to the development of an innovative concept engine lubricant capable of achieving a 6.5% 25 city car as the test bed, Shell engineers formulated an ultra low viscosity 0W-10 motor oil. Shell-GMD collaboration case study.

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ECONAMIQ: Flexible over-expansion with cylinder deactivation can reduce ICE fuel consumption by up to 20%

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Dutch start-up ECONAMIQ is developing a novel engine technology which saves up to 20% in fuel consumption. The “ECONAMIQ principle” uses flexible over-expansion in combination with cylinder deactivation technology to increase performance and efficiency without significantly changing the engine layout or architecture.

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Libertine FPE builds demo prototype of linear free piston generator

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UK-based Libertine FPE has built a demonstration prototype of its linear electrical machine for what it is calling “Digital Piston Motion Control” in free piston engine applications. This technology will allow researchers to develop future combustion engines free from the piston motion constraints dictated by the crankshaft.

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