Scuderi unveils Split-Cycle engine prototype — SAE International

14 Май 2015 | Author: | Комментарии к записи Scuderi unveils Split-Cycle engine prototype — SAE International отключены
Kawasaki Square Four 2 Stroke Prototype

Scuderi unveils Split-Cycle prototype

Cutaway model of the Split-Cycle engine was unveiled at the 2009 SAE World Congress. The is considered a twin-cylinder, even the left cylinder basically as an air compressor. The prototypes built for tests use a pair of belt-driven balance shafts to minimize the forces inherent in large-displacement twin-cylinder engines.

Engines for automotive propulsion would have more cylinders, Scuderi officials acknowledge the potential to power generators in hybrids.

The first proof-of-concept of the Scuderi Split-Cycle engine was by Massachusetts-based Scuderi Group at the 2009 SAE World Congress in

The prototype, shown in cutaway with fully operating is an exact duplicate of the actual engine that will testing and analysis at Southwest Institute ’s (SWRi) San Antonio next month. The 1.0-L naturally aspirated, indirect-injection prototype is expected to produce up to 80% toxic emissions than a gasoline internal-combustion engine, company Chairman Sal Scuderi.

The Scuderi engine was designed by founder Carmelo Scuderi. His sons Sal and Stephen (Stephen as Vice President and Patent have moved development steadily and methodically since father’s … in 2002. believe the engine and its novel process offer significant emissions, and torque benefits with conventional Otto engines.

According to Stephen a number of OEMs have interest, and Scuderi Group is to license the technology.

The operating concept divides the strokes of the combustion cycle two paired cylinders (the resembles a large parallel-twin engine). The left cylinder intake and compression—essentially it functions as an air the right cylinder is responsible for and exhaust. The compressed air is transferred a crossover passage from the cylinder into the combustion/exhaust

Previous split-cycle engines concept dates to 1914) two major problems— poor efficiency and low thermal efficiency. engine solves the breathing on the compression side by using a of pneumatically actuated valves open outwardly, enabling a close (1.0 mm) piston-to-cylinder clearance without valve

Sal Scuderi claims this pushes nearly 100% of the air from the compression cylinder the crossover passage, eliminating the problems of previous split-cycle

The engine requires just one revolution to complete a single cycle. Ignition is timed to between 11º and 15º after top-… (ATDC), which Scuderi is key to the engine’s thermodynamic efficiency and combustion. To enable the ATDC Scuderi uses a combination of air pressure in the crossover passage, high mixture turbulence in the cylinder, and fast flame

The result is a combustion rate is four times faster that of a conventional four-…, Scuderi said.

Because the engine’s cylinders are of each other, compression in the compression cylinder is not limited by the process. Stephen Scuderi that the engine runs compression ratios of approximately and that cylinder pressures on the side are equal to that of a engine during combustion.

The in the compression cylinder and the crossover reach over 50 bar (735 on the naturally aspirated prototype and 130 bar (1900 psi) on the turbocharged

Exceptionally long valve duration during combustion is a key to the engine’s excellent turbulence Sal Scuderi said. The result is rapid atomization of the fuel/air

After tests of the base aspirated unit are completed at Scuderi will continue a turbocharged version; it is expected to be by 2010. “We believe we can achieve 140 specific output,” Stephen told AEI .

Scuderi Group are committed to using as much hardware in the prototype engines as to help minimize cost. is a development partner, supplying two injectors per cylinder pair, as as fuel and oil pumps and ECU. “We some of the control software and IP Bosch; our IP and patents are primarily in engine architecture,” said Scuderi.

The Scuderi Group’s global portfolio contains more 200 patents, including 72 issued in than 50 countries.

Kawasaki Square Four 2 Stroke Prototype
Kawasaki Square Four 2 Stroke Prototype
Kawasaki Square Four 2 Stroke Prototype
Kawasaki Square Four 2 Stroke Prototype
Kawasaki Square Four 2 Stroke Prototype


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