METHOD OF TAKING LONGER TRUE EXPANSION STROKE IN EXPANSION STROKE THAN TRUE COMPRESSION STROKE IN COMPRESSION STROKE WHEN PISTON VALVE AND ROTARY VALVE ARE USED FOR FOUR-STROKE CYCLE ENGINE AND SIX-STROKE CYCLE ENGINE

摘要

PROBLEM TO BE SOLVED: To provide a method of taking longer, in the stroke of a piston, a true expansion stroke in an expansion stroke than a true compression stroke in a compression stroke when a stroke valve and a rotary valve (Patent Application No.356145 in 1991) are used for a four-stroke cycle engine and a six-stroke cycle engine (Patent Application No.417964 in 1990, and Patent Application No.172736 in 1996).;SOLUTION: A valve (piston valve) or an air port (rotary valve) opening at a top dead center and closing at a bottom dead center in an intake stroke (first intake stroke for six-stroke cycle engine), and a valve or an air port opening at the bottom dead center and closing just before the top dead center or air port are provided, and a space having notching (mixture or air stays here temporarily) is provided.;COPYRIGHT: (C)2002,JPO