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When reforming is not used, the fuel and exhaust pass through CV2 unchanged. A paper on their work was published online 5 February in the ACS journal Energy & Fuels. 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 H-engine—basically two separate engines housed within the same engine block—comprises two switchable parallel piston banks, independently fueled by gasoline and CNG. Startup Eco-Motive has developed what it calls the first dual-fuel “H” engine; it recently received a patent (# 8807098 ) on the design.
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
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.
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 enginefueled by liquid natural gas (LNG). It expands all the way to ambient pressure before the exhaust stroke.
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-fueledengines. —Musu et al., SAE 2010-01-2107.
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.).
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. The Garric engine has been to operate on a wide variety of liquid and gaseous fuels.
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. Ignition occurs via the sparkplugs.
million from the Department of Energy’s ARPA-E program ( earlier post ) to complete its prototype development of a new gasoline-fueled wave disc engine and electricity generator that promises to be five times more efficient than traditional auto engines in electricity production, 20% lighter, and 30% cheaper to manufacture.
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.
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%
In its chapter, Ricardo considered a number of potential roles for liquid air considered in which the air is used as a heat sink and then as a working fluid within a heat engine. The heat engine can be deployed as either the prime mover or in a supporting role to recover waste heat from a conventional engine or fuel cell.
The only entry criteria for innovations are that they reduce CO 2 emissions from passenger cars; could be commercially deployed in 3–5 years; are on-vehicle, and; are compatible or could be easily integrated into the existing transport, energy and fuel infrastructures. The Exhaust port is located on the outer side of the engine block.
The X2—which can be considered a beta version of the X1 alpha (referenced by Dr. Alexander Shkolnik, President and CEO, at the SAE High Efficiency IC Engine Symposium earlier this year, earlier post )—is a 40 hp (29 kW) multi-fuel capable rotary engine that requires no valves, cooling systems, radiators, mufflers, or other components.
DOE also announced up to $35 million to advance fuel cell and hydrogen technologies, including enabling the early adoption of fuel cell applications, such as light duty fuel cell electric vehicles. Increased efficiency may be achieved using one or more proposed enabling technologies on a baseline engine. turbomachinery.
Secondly, the central combustion chamber is benefit for highly efficient scavenging via intake and exhaust ports without using valves. Furthermore, natural gas will be investigated as the fuel of the system. Firstly, inherent mechanical balance of the system can be realized when the two linear generators are synchronized.
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). As a result, Scuderi said, combustion is four times faster than in a conventional engine.
High-pressure air jet controlled compression ignition (JCCI) is based on a compound thermodynamic cycle and is implemented in a hybrid pneumatic engine (HPE) as proposed by Schechter in 1999. The application of HPE is also beneficial to the fuel consumption and emissions because of its several flexible operation modes. Schechter, M.
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. The event takes place from June 16-18 in Stuttgart, Germany.
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