|Cylinder pairs in the Scuderi Split Cycle. Scuderi divides the four strokes of the Otto cycle across two paired cylinders, a compression and a power cylinder.|
The Scuderi Group will exhibit further-developed designs of its Scuderi Air-Hybrid Engine next week at the Society of Automotive Engineers World Congress in Detroit.
The Scuderi Air-Hybrid Engine has been under development for the past three years, with the first gasoline prototype scheduled to be completed in January. As engineering and testing has continued, many potential enhancements have been explored, such as a waste-heat recovery system specifically designed for the Scuderi Air-Hybrid Engine.
Waste heat energy is generally recovered in combined-cycle engines which utilize the Otto cycle to generate power and the Rankine cycle to recover waste heat. Conventional combined-cycle engines must immediately utilize the recovered waste heat or discard it.
In contrast, the Scuderi Air-Hybrid Engine has the added capability of storing the waste, which is heat-generated energy in the form of compressed air in the Scuderi Engine’s air tank for later use. This capability further enhances the engine’s fuel efficiency and further reduces the engine’s emissions output.
The Air-Hybrid is based on the Scuderi Split-Cycle Engine. In a conventional four-stroke engine, a single piston slides up and down in a cylinder through the intake, compression, power and exhaust strokes—each power stroke requires two revolutions of the crankshaft.
The Scuderi Split-Cycle engine divides the four strokes of the Otto cycle over a paired combination of one compression cylinder and one power cylinder. Intake air is compressed in the compression cylinder and transferred via a gas passage to the power cylinder for combustion.
By adding a small air storage tank with some simple controls, the Scuderi engine can also recapture energy normally lost during the braking of a vehicle. In addition, unlike electric hybrids, the Scuderi Air-Hybrid has the capability of recapturing energy from the exhaust of the engine, making it possible to utilize a Scuderi Air-Hybrid design in stationary applications such as electric generators.
Scuderi expects its Air-Hybrid Engine to deliver a significant increase in performance, efficiency and environmental impact over today’s internal combustion engines. The Scuderi Air-Hybrid Engine is adaptable to diesel and gasoline automobiles, commercial vehicles and any other applications powered by internal combustion engines.
The Scuderi Group says that it has reached a number of significant milestones during the past year, after making its debut at last year’s SAE World Congress. The engine’s patent portfolio continued to expand, with protection secured in key global markets including Japan, Taiwan, China and Russia. The patent portfolio now includes seven issued US patents, five US patents pending and multiple international patents pending in over 45 countries.