Scuderi Split Cycle Engine

Information about Scuderi Split Cycle Engine

The Split Cycle Engine is a type of internal combustion engine.

Design

In a conventional Otto cycle engine, each cylinder performs four strokes per cycle: intake, compression, power, and exhaust. This means that two revolutions of the crankshaft are required for each power stroke. The split-cycle engine divides these four strokes between two paired cylinders: one for intake/compression and another for power/exhaust. Compressed air is transferred from the compression cylinder to the power cylinder through a crossover passage. Fuel is then injected and fired to produce the power stroke. In a standard Otto cycle engine, the pistons fire every other revolution. A split-cycle design fires every revolution. In essence this is a conventional two stroke cycle, using a displacer piston to provide scavenging air for the combustion chamber. Conventional two stroke engines do this by using crankcase compression, eliminating the need for a second piston and cylinder. Firing after top dead center also increases crankshaft torque. [1]. The engine is being developed in Springfield Massachusetts by the Scuderi Group LLC [2]

An animation of the engine's operation can be seen here.

History

The Backus Water Motor Company of Newark, New Jersey was producing an early example of a split cycle engine as far back as 1891.

The engine, of "a modified A form, with the crank-shaft at the top", was water-cooled and consisted of one working cylinder and one compressing cylinder of equal size and utilized a Hot-tube ignitor system. It was produced in sizes ranging from 1/2 to 3 horsepower and the company had plans to offer a scaled-up version capable of 25 horsepower or more. [3]

References

See also

Heat engine types/configurations using thermodynamic cycles (Power cycles)
Stroke number and stroke parting
Crower six stroke Four-stroke cycle Scuderi Split Cycle Engine One-stroke cycle Six stroke engine Two-stroke cycle
Different work volume types (incl. Pistonless rotary engine)
Britalus Rotary Engine Combustion chamber Controlled Combustion Engine Jet engine Orbital engine Piston engine Quasiturbine Rocket engine Swing-piston engine Toroidal engine Trochilic engine Tschudi engine Twingle engine Wankel engine
Different work volume ports and main forms of
Cylinder head porting D slide valve Four-stroke cycle engine valves Manifold Multi-valve Piston valve Poppet valve Rocket engine nozzles Sleeve valve
Different pistons layouts
Bourke engine Delta engine Double acting/differential cylinder Opposed piston engine Radial engine Rotary engine Single cylinder engine Stelzer engine Straight engine
Different main rotational motion mechanisms or arc to (or even almost) pistons back-and-forth.
Sector straight-line linkage [1] Connecting rod Coomber Rotary Engine [2] Crank Substitute Engine [3] Crankshaft Evans linkage [4] Cam Parallel motion Peaucellier-Lipkin linkage Piston rod QRMC Stirling/HydraLink [5] Revolving Cylinder Engine [6] Rhombic drive Scotch yoke Swashplate Swashplate engine Watt's linkage
One-way stop-and-go like rotational motion mechanisms to rotation.
Toroidal engine Trochilic engine
The internal combustion engine is an engine in which the combustion of fuel and an oxidizer (typically air) occurs in a confined space called a combustion chamber. This exothermic reaction creates gases at high temperature and pressure, which are permitted to expand.
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A cylinder is the central working part of a reciprocating engine, the space in which a piston travels. Multiple cylinders are commonly arranged side by side in a bank, or engine block
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crankshaft, sometimes casually abbreviated to crank, is the part of an engine which translates reciprocating linear piston motion into rotation. It typically connects to a flywheel, to reduce the pulsation characteristic of the four-stroke cycle, and sometimes a torsional
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City of Newark

Flag
Seal
Nickname: The Brick City
Map of Newark in Essex County
Coordinates:
Country United States
State
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18th century - 19th century - 20th century
1860s  1870s  1880s  - 1890s -  1900s  1910s  1920s
1888 1889 1890 - 1891 - 1892 1893 1894

:
Subjects:     Archaeology - Architecture -
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A hot-tube ignitor was an early device that fit onto the cylinder head of an internal-combustion engine and ignites the compressed fuel/air mixture by means of a flame heating part of the tube red hot.
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A heat engine is a physical or theoretical device that converts thermal energy to mechanical output. The mechanical output is called work, and the thermal energy input is called heat. Heat engines typically run on a specific thermodynamic cycle.
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A thermodynamic cycle is a series of thermodynamic processes which returns a system to its initial state. Properties depend only on the thermodynamic state and thus do not change over a cycle.
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A stroke is a single action of certain engines.

In a steam, Otto or Diesel piston engine, a stroke is the action of a piston travelling the full length of its cylinder in one direction.

The stroke length is determined by the cranks on the crankshaft.
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The Crower six-stroke engine or Crower Cycle is a concept under development by Bruce Crower.

Two extra strokes are added to the customary internal combustion engine four stroke Otto cycle.
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four-stroke cycle. The four strokes refer to intake, compression, combustion and exhaust strokes that occur during two crankshaft rotations per working cycle of Otto Cycle and Diesel engines.
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The Split Cycle Engine is a type of internal combustion engine.

Design

In a conventional Otto cycle engine, each cylinder performs four strokes per cycle: intake, compression, power, and exhaust.
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A six stroke engine describes a number of different approaches in the internal combustion engine to capture the waste heat from the four stroke Otto cycle and use it to power an additional power and exhaust stroke of the piston.
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The two-stroke cycle of an internal combustion engine differs from the more common four-stroke cycle by completing the same four processes (intake, compression, power, exhaust) in only two strokes of the piston rather than four.
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pistonless rotary engine is an internal combustion engine that does not use pistons in the way a reciprocating engine does, but instead uses one or more s, sometimes called rotary pistons. An example of a pistonless rotary engine is the Wankel engine.
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The Britalus rotary engine was invented in 1982 by Kenneth W. Porter, P.E., M.S.A.E, of King County, Washington.

It operates on a modified Brayton cycle, but with continuous pulsed combustion, similar to that of a gas turbine.
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A combustion chamber is the part of an engine in which fuel is burned.

Internal Combustion Engine

The leftover hot gases produced by this combustion tend to occupy a far greater volume than the original fuel, thus creating an increase in pressure within the limited volume
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Controlled Combustion Engine (CCE) is a term used by Revetec to identify a type of internal combustion engine designed by Brad Howell-Smith. It uses two counter-rotating cams instead of a crankshaft driving two horizontally opposed pistons [1] while retaining an identical
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jet engine is an engine that discharges a fast moving jet of fluid to generate thrust in accordance with Newton's . This broad definition of jet engines includes turbojets, turbofans, rockets, ramjets, pulse jets and pump-jets, but in common usage, the term generally refers to a
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Sarich orbital engine is a type of internal combustion engine, featuring rotary rather than reciprocating motion of its internal parts. It differs from the conceptually similar Wankel engine by using a shaped rotor that rolls around the interior of the engine, rather than having a
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A reciprocating engine, also often known as a piston engine, is a heat engine that uses one or more pistons to convert pressure into a rotating motion. This article describes the common features of all types.
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The Quasiturbine or Qurbine engine is a proposed pistonless rotary engine using a four-sided rhomboid rotor whose sides are hinged at the vertices.

Patents for the Quasiturbine (in the most general AC concept with carriages) [1] [2]
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rocket engine is a reaction engine that takes all its reaction mass from within tankage and forms it into a high speed jet, thereby obtaining thrust in accordance with Newton's third law.
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A swing-piston engine is a type of internal combustion engine in which the pistons move in a circular motion inside a ring-shaped "cylinder", moving closer and further from each other to provide compression and expansion.
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The Toroidal engine design is a form of internal combustion engine that features pistons that rotate within a toroidal space. To date, no toroidal engine designs have entered production, but the designs are typically simple and have few moving parts, and toroidal engines have a
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The Trochilic engine is composed of two mirror image gull wing segments intermeshed and rotating about a common central axis. Varying the relative segment velocities in rotation, forms four variable quadrants.
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The Twingle engine is a two-stroke engine, usually of small-capacity and usually petrol fuelled. It uses two pistons, one of which controls the inlet ports, the other the exhaust ports.
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Wankel rotary engine is a type of internal combustion engine, invented by German engineer Felix Wankel, which uses a rotor instead of reciprocating pistons. This design delivers smooth high-rpm power from a compact, lightweight engine.
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Cylinder head porting refers to the process of modifying the intake and exhaust ports of an internal combustion engine to improve the quality and quantity of the gas flow. Cylinder heads, as manufactured, are usually suboptimal due to design and manufacturing constraints.
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The D Slide Valve was a form of rectilinear slide valve for use in rotative steam engines invented by William Murdoch and patented in 1799. It was named for the hollow central piston and was in the shape of a D.
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