Two-Stroke Internal Combustion Engine

The technology comprises a two-stroke internal combustion engine that does not employ a piston. In this new design compression of cold air or fuel-air mixture and expansion of hot combustion products is achieved realizing increased thermodynamic cycle efficiency. Both spark ignition and compression ignition models can be used with the same engine design (gasoline, diesel, or gaseous fuels can be used depending on the circumstances). The output torque at fixed r.p.m. can be varied (as typical) by changing fuel-air ratio. Furthermore, an order of magnitude change in the output torque can be achieved by continuous variations of the working volume during engine operation. Thus, no variable transmission is required for the engine's application to a vehicle. In addition, the engine does not require any lubrication, and is fatigue resistant with an expected long life even with continuous engine operation. Thermodynamic efficiency of the engine is increased in comparison with known two-stroke diesel engines by favorable scavenging conditions and a high power to weight ratio. Simple design and absence of lubrication provide low construction and maintenance costs of the engine. This research is in its beginning stages of development and is shifting from the theoretical to implementation stage. We are seeking corporate sponsorship for ongoing research.

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