Title:
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
Document Type and Number:
Japanese Patent JP2001032730
Kind Code:
A
Abstract:
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.
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).
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Inventors:
NAKADA OSAMU
Application Number:
JP25054799A
Publication Date:
February 06, 2001
Filing Date:
July 18, 1999
Export Citation:
Assignee:
NAKADA OSAMU
International Classes:
F02B75/02; F01L7/02; F02D13/02; F02D15/00; (IPC1-7): F02D15/00; F01L7/02; F02B75/02; F02D13/02
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