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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). It expands all the way to ambient pressure before the exhaust stroke. Click to enlarge.
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., SAE 2010-01-2107.
When reforming is not used, the fuel and exhaust pass through CV2 unchanged. The basic concept of TCR involves using exhaust heat to promote on-board reforming of hydrocarbon fuels into syngas (a mixture of carbon monoxide and hydrogen). The syngas is then burned in the engine in place of some or all of the original fuel.
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.
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. Tags: ConceptEnginesEngines.
The family of engines strategy uses a common power cylinder system across several different engine variants to address a range of power and torque requirements in order to serve multiple military vehicles with a common architecture. In December 2020, Achates Power announced that their 10.6L
The two-minute video, the first to show the naturally-aspirated one-liter gasoline prototype engine in operation, provides a view of the engine as it undergoes testing, proving the concept of Firing After Top Dead Center. A split-cycle engine is essentially an air compressor on one side with a combustion chamber on the other.
Before realizing the design of a hybrid pneumatic engine (HPE) in hardware, the researchers evaluated the different pneumatic engine modes (motor mode and pump mode) associated with both two-stroke and four-stroke implementations of the pneumatic concept. The hardware concept. Dönitz et al. Test bench setup.
HCCI is a combustion regime in which well-mixed fuel, exhaust gas and air are compressed to the point of auto-ignition. Unlike a spark ignition gas engine or diesel engine, HCCI produces a low-temperature, flameless release of energy throughout the entire combustion chamber.
This led to a proposed concept of a Radial Internal Combustion Wave Rotor—the precursor to the wave disc engine. . Early concept of an internal combustion wave disc engine. Since heat release increases pressure inside the channel, opening the outer channel end generates an outflow of the exhaust gases.
The engine was invented by Herns Louis, veteran of more than 30 years in the parts manufacturing industry ranging from automotive to aerospace, specializing in computerized parts machining. The technology can be easily adapted to existing engines, making the implementation very cost effective. ConceptEnginesEngines Natural Gas'
High efficiency internal combustion engine. Heat recovery could also be achieved using the Ricardo split cycle engine, a novel internal combustion engine design that incorporates liquid nitrogen to capture exhaust heat and increase fuel efficiency. The Dearman engine. Compressed air engines (e.g.,
The LowCVP is calling on UK innovators to submit creative concepts with the potential to cut emissions from road vehicles without the need for radical new infrastructure. Rotor 1, Rotor 2 and the connecting cam form the total internal mechanism of the engine. The Exhaust port is located on the outer side of the engine block.
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 conceptengine, the OP4. liter OM651 Euro 5 engine, said Fabien Redon VP, Technology Development at Achates Power, the OP4 design shows a modeled 13.5%
The engine is packaged as a research engine, with easy access for instrumentation, a balancer shaft, etc., The Scuderi Group unveiled a cutaway model of the first proof-of-concept prototype for its Scuderi Split-Cycle Engine ( earlier post ) at the SAE World Congress in Detroit. Tags: ConceptEngines.
Other features of the X2 include: Quiet operation: engine lacks poppet valves and over-expansion minimizes exhaust noise. By combining HEHC with a rotary engine architecture, LiquidPiston has created an engine that is up to ten times lighter, quiet, and two to three times more efficient at part-load than conventional engines.
Secondly, the central combustion chamber is benefit for highly efficient scavenging via intake and exhaust ports without using valves. Firstly, inherent mechanical balance of the system can be realized when the two linear generators are synchronized. —Ling Huang 2012.
The new ECONAMIQ technology builds on existing concepts such as cylinder deactivation and variable valve timing with a unique patented combination of routing gasses for increased system efficiency. The company presented its first results at the annual ASME ICEF (Internal Combustion Engine Fall) conference in Chicago.
It compresses the pressurized gas produced by exhaust gas turbocharger, comprising fresh air and exhaust gas introduced from the EGR valve. However, the control of combustion phasing is one of the crucial issues in determining whether the diesel PCCI engine could be commercialized or not.
While use of the software has led to improved engine designs, it has not yet realized its full potential for attaining the goals of shortened engine development cycle time, minimized fuel consumption, or minimized exhaust emissions from engines. Applications must present a sound business case for the proposed technology.
It is believed that when fully developed with its turbo charged and air hybrid components, the engine will achieve significant gains in fuel efficiency - potentially making it the most significant advance since the Otto cycle more than 130 years ago. Currently the engine prototype is undergoing testing and analysis in San Antonio, Texas.
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