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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. Each piston bank operates independently of the other but is housed within the same engine block and has separate lubrication systems.
The ChangAn CA18 FlexDI ConceptEngine shown at Auto China 2008. Ltd, China’s fourth largest automotive manufacturer, have entered into a joint development contract for a conceptengine. The program is focused on fuel economy improvement while achieving Euro IV emissions level. Click to enlarge. Earlier post.).
Australia-based Revetec is designing what it calls the Controlled Combustion Engine (CCE)—a cam-drive gasoline spark-ignited internal combustion engine that is smaller, lighter, cleaner, less expensive to manufacture and that produces higher torque due to higher mechanical transfer than equivalent conventional engines.
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.
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. This engine demonstrates a potential near-term solution. —Gary Rogers, FEV, Inc. president and CEO.
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.
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.).
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.
The prototype is of the naturally-aspirated Split Cycle gasolineengine, 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.
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.
liter, 4-cylinder engine, the dual piston mechanism was able to adjust the engine from a CR of 9.6 Combining the high compression ratio with the Atkinson cycle, the engineering team demonstrated a 7.4% improvement in fuel economy in operation over the Japanese 10-15 cycle. and back again. Kadota et al. Ishikawa, K.
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