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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.
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
It expands all the way to ambient pressure before the exhaust stroke. The power is produced in almost a 50-50 split between the combustion (central) and exhaust (largest) pistons. Transfer from the combustion cylinder to the exhaust cylinder takes place when the exhaust cylinder volume is minimal. 27-1, book G1011A, 1996.
The basic idea of the new Diesel combustion illustrated in this paper is to control the heat release rate by a gradual supply of an almost homogeneous charge, without relying on exhaust gas recirculation to moderate the reaction. Thus the HCPC range can extend to all engine operating conditions, including very high loads. Tamagna, D.,
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'
Since heat release increases pressure inside the channel, opening the outer channel end generates an outflow of the exhaust gases. 2005) Wave Rotors Technology and Applications (The 11 th International Conference on Vibration Engineering Timisoara, Romania, September 27 - 30, 2005).
The HPE was long thought to be a system in which all engine valves had to be actuated in a fully variable manner to allow for two-stoke pneumatic modes and still enable the four-stroke combustion mode. In large naturally-aspirated SI engine, high-friction, pumping losses and part-load operation all contribute to poor fuel efficiency.
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. The engine, according to the company, does not have a traditional Otto or Diesel cycle. First, it helps to oxidize the exhaust gases more fully.
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.,
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.
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. g/kWh engine-out NO x. Click to enlarge. The OP4 is a two-stroke, inline two-cylinder, four-piston diesel with a swept volume of 1.5
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.
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.
An adaption of cylinder de-activation technique called ECONAMIQ over-expansion can be applied to engines to improve fuel efficiency. Using the pressure from the exhaust gas from the active cylinders, the ‘idle’ cylinders could be expanded to extract more work out of the engine during partial load operation.
It compresses the pressurized gas produced by exhaust gas turbocharger, comprising fresh air and exhaust gas introduced from the EGR valve. Compound HPE is divided into a compressor cylinder and a power cylinder, combined with a compressed air storage tank. Then it charges the compressed air storage tank.
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.
Split-cycle engines separate the four strokes of intake, compression, power, and exhaust into two separate but paired cylinders. The compressed air is then transferred through a crossover passage from the compression cylinder into the second cylinder, where combustion and exhaust occur. The Scuderi Engine.
The project will take the Garric design from its current advanced concept stage to development of a fully functional prototype, according to the company. The Garric engine has been to operate on a wide variety of liquid and gaseous fuels. It also directs the spent exhaust gasses out of the torus.
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.
The Scuderi Engine is a split-cycle design that divides the four strokes of a conventional combustion cycle over two paired cylinders: one intake/compression cylinder and one power/exhaust cylinder. The Scuderi engine achieves compression ratios in excess of 100:1 in its compression cylinder, Sal Scuderi said.
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