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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. —Musu et al. Tamagna, D.,
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). Major, vice president, Achates Power. Achates Power is partnered with Cummins, Inc.
The OP4 light-duty opposed-piston diesel. 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 dieselconceptengine, the OP4. Source: Achates Power. Click to enlarge. Click to enlarge. Background.
Rendering of the Ilmor 5-stroke conceptengine. Ilmor Engineering will present a new cutaway version of the Ilmor 5-stroke conceptengine at the upcoming Engine EXPO 2009, 16-18 June, in Stuttgart, Germany. The 5-stroke conceptengine is a self-funded proof of concept. Click to enlarge.
The engine is designed for use in light-duty vehicles, and demonstrates the potential of modifying passenger vehicle engines to achieve diesel-like fuel efficiency and power using CNG as an alternative fuel. FEV developed ATAC more than a decade ago, targeting large-bore engines in stationary and heavy-duty applications.
Isuzu D201 35 hp dieselengine (left) and the LiquidPiston 40 hp X2 Prototype (right). Expected realized brake efficiency for the X2 is 58% (peak) and 50% at partial load; power density is targeted to be around 2 hp/lb. Power modulation by cycle skipping increases efficiency and recaptures heat. Click to enlarge.
Motiv Engines, LLC introduced the second-generation of its engineconcept dubbed the MkII Clarke-Brayton Engine, which it intends to develop into a heavy-duty on-highway engine fueled by liquid natural gas (LNG). We have taken what we learned from our first engine and applied it to the new design.
have completed a final set of manufacturing drawings for the RadMax DieselEngine, and have released them competitive bid. The companies are developing an improved axial vane type rotary engine known as the RadMax. The engine has a compression ratio of 20:1, which lets it burn a variety of fuels, including diesel.
Example power cycle of the cryogenic (e.g., liquid air) Dearman piston engine. Source: Dearman Engine Company. Sources of low-grade waste heat include power stations to factories to vehicle engines. Click to enlarge. Among the transportation uses of liquid air outlined in the report are: Prime mover.
The new FOA supports the President’s EV Everywhere Grand Challenge, which seeks to make the United States the first country to produce a wide array of plug-in electric vehicle (PEV) models (including plug-in hybrids and all-electric vehicles) by 2022 that are as affordable and convenient as current gasoline powered vehicles we drive today.
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.
Researchers at ETH Zürich, with partners Robert Bosch GmbH, Wenko Swissauto and the Swiss Federal Office of Energy are developing a downsized and supercharged hybrid pneumatic engine that they say can deliver a fuel consumption reduction of more than 30% compared to a standard engine with the same rated power. Earlier post.).
At NACV 2017, Bosch is also showcasing several future-focused powertrain conceptsengineered to save fuel and money while extending the lives of fleets. The eAxle is a scalable, modular platform with the motor, power electronics, and transmission form one compact unit.
Compound HPE is divided into a compressor cylinder and a power cylinder, combined with a compressed air storage tank. The power cylinder works as a fully four-stroke cycle with naturally aspirated or turbocharged intake. A paper on the use of JCCI is published in the ACS journal Energy & Fuels. Credit: ACS. Click to enlarge.
Ilmor Engineering will present a new cutaway version of the Ilmor five-stroke conceptengine at the show. Ilmor, based in the UK, has traditionally focused on racing engines, but now as a member of the UK Low Carbon Vehicle Partnership its business is becoming increasingly diverse.
The technology divides the four strokes of a conventional combustion cycle over two paired cylinders - one intake/compression cylinder and one power/exhaust cylinder. Currently the engine prototype is undergoing testing and analysis in San Antonio, Texas. The event takes place from June 16-18 in Stuttgart, Germany.
The partnership involves using select conventional vessels from EPS’ existing tanker fleet that use MAN engines to be retrofitted, allowing them to be powered by methanol and ammonia which will be supplied by OCI. Also, EPS will construct newbuild vessels with MAN enginespowered by the same two alternative marine fuels.
The Pulstar product offers very high power spark discharge, on the order of 1MW, to accelerate combustion pressures enabling forced semi-homogeneous combustion for all conditions. Unlike a spark ignition gas engine or dieselengine, HCCI produces a low-temperature, flameless release of energy throughout the entire combustion chamber.
The prototype is of the naturally-aspirated Split Cycle gasoline engine, and is intended to be a proof of the basic technology of the split cycle with firing after Top Dead Center (one of the key attributes of the engine and cycle). Naturally Aspirated Split Cycle Engine Turbocharged Split Cycle Engine. Engine speed.
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