OS-A3: An extended expansion stroke using multiple linkage system in general purpose engine(OS-A High Efficiency and Low Emission Engine by Variable Mechanism,Organized Session Papers)

概要

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Research has been conducted on an extended expansion engine, using a multiple linkage system to increase the thermal efficiency of general-purpose engines. A four jointed linkage was used between the connecting rod and the crank pin of a standard piston-crank system. The end of the linkage rotates at half the speed of the crankshaft, resulting in piston strokes unequal length in each revolution. The length of the expansion stroke is greater than that of the compression stroke, thereby providing an extended expansion cycle.
一般社団法人日本機械学会の論文
2008-07-28