METHOD FOR MAKING TRUE EXPANSION RATIO LARGER THAN TRUE COMPRESSION RATIO WHEN PISTON VALVE AND ROTARY VALVE ARE USED FOR FOUR-CYCLE ENGINE, SIX-CYCLE ENGINE, EIGHT- CYCLE ENGINE AND TEN- OR MORE-CYCLE ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a method for making a true expansion ratio larger than a true compression ration when a piston valve and a rotary valve are used for a 4-cycle engine, 6-cycle engine, 8-cycle engine and 10- or more-cycle engine. ;SOLUTION: A valve 2 (piston valve) and an air hole (rotary valve) are provided, which are opened at a bottom dead point at the time of compression step and are closed before the mixed air or air is too expanded to be a resistance of rotation (the piston is descended and an atmospheric pressure is 1 or less to be a resistance to rotation of a crankshaft) although the mixed air or the air is expanded caused by an explosion (combustion).;COPYRIGHT: (C)2001,JPO