Split-cycle engine now more efficient than traditional combustion engine

Split-cycle engines have been around for some time but until now have never matched the fuel efficiency of traditional internal combustion engines. That is about to change, with the latest split-cycle engines from the Scuderi Group offering greater fuel efficiency and up to 80 percent reduction in NOx emissions and 50 percent reduction in CO2.

Split-cycle engines feature paired cylinders, so a four-cylinder engine has two sets of paired cylinders working together, with a crossover passage linking the two cylinders in each pair to each other. The four strokes of the engine are split into two groups, with the left cylinder handling intake and compression and the second handling combustion and exhaust. The Scuderi™ Air-Hybrid design adds an air storage tank and controls that allow it to recapture and store the energy lost as the engine operates.

The new design solves some of the problems that have hampered previous split-cycle designs. The low volume breathing problem is solved by outward-opening pneumatic valves and a reduction in the clearance between the piston and cylinder head to under 1 mm, which means virtually 100 percent of the compressed air is pushed out of the cylinder.

via Split-cycle engine now more efficient than traditional combustion engine

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4 Responses to Split-cycle engine now more efficient than traditional combustion engine

  1. jobin says:

    sir can u tell abot the major advantages of this split cycle engine…….

  2. Deskarati says:

    I’m sorry that I don’t have any knowledge of this technology. Perhaps a look here might help http://www.scuderigroup.com/the-scuderi-split-cycle-design/
    Good luck – Deskarati

  3. Steve B says:

    Early versions of the Split Cycle Engine (SCE) were not as efficient as the “traditional” Otto Cycle engines. Which probably explains why the SCE was not widely adopted.

    The development introduced by Scuderi further improved on the SCE design by adding an auxiliary compressed-air storage tank and by changing the point at which combustion happens in the second cylinder. This change in combustion timing gives the piston better leverage on the crankshaft, improving efficiency when the engine is working at low speeds. Further, the separate compressed air tank siphons off the air intake that isn’t used for combustion. When the tank is full, the air inside is used to drive the engine, allowing the compression piston to stop compressing air for a period until the storage tank is spent, saving even more fuel.

  4. jobin says:

    They mention that there is 80% reduction in NOx, and 50% in CO2 emission, how is this possible….

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