Patent
Quasi Free Piston Engine
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TLDR
In this article, a quasi-free piston engine with a flywheel and a small crankshaft is described, and a hydraulic push-rod system for efficient valve actuation is provided.Abstract:
A quasi free piston engine uses, a small, lightweight crankshaft to connect the piston assemblies of the free piston engine with a flywheel. While most of the power output from the combustion pistons is extracted by pumping pistons as hydraulic power, the small crankshaft and flywheel ensure exact TDC position of the combustion pistons in operation, and provide a rotating means to drive combustion cylinder intake and exhaust valves. Flywheel speed may be monitored to provide feedback on power extraction for further control of the system. In addition, a hydraulic push-rod system for efficient valve actuation is provided.read more
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A four-cylinder, four-cycle, free piston, premixed charge compression ignition, internal combustion reciprocating piston engine with a variable stroke
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