| 摘要 |
PCT No. PCT/JP87/00312 Sec. 371 Date Dec. 28, 1990 Sec. 102(e) Date Dec. 28, 1990 PCT Filed May 18, 1987 PCT Pub. No. WO88/09430 PCT Pub. Date Dec. 1, 1988.A combustion promoter for an internal combustion engine comprising a cylinder having a combustion chamber therein, a main piston movable within the cylinder, a sub-piston mounted on an inner wall of the main piston, and a sub-cylinder surrounding the projecting portion of the sub-piston and defining a sub-cylinder chamber. The sub-piston is driven in relation to the stroke of the main piston toward the combustion chamber until the main piston has reached a position in the vicinity of top dead center of a compression stroke. Gas in the combustion chamber is then introduced into the sub-cylinder chamber where it is stored. The sub-piston is next moved rapidly away from the combustion chamber to eject the gas stored in the sub-cylinder chamber into the combustion chamber, thereby promoting combustion of the gas.
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