Internal combustion engine

摘要

The invention has many aspects. One aspect is that of an internal combustion engine ( 8010 ) that has a piston ( 8020 ) within a cylinder ( 8022 ) and has a crankcase ( 8012 ), defining a combustion chamber ( 8024 ) and crank volume ( 8026 ). A passageway ( 8032 and 8034 ) links the combustion chamber ( 8024 ) and the crank volume ( 8026 ). There is provided valve means ( 8038 ) for selectively closing the linking passageway and valve means ( 8030 ) for selectively closing and inlet to the crank volume ( 8026 ). In another aspect, there is an improvement to a scotch yoke fluid device. A displaceable member for relieving pressure in a variable volume chamber in the cylinder where combustion is occurring is provided. The invention includes a method of varying power output of a scotch yoke device, by choosing cylinder angle, pin angle and firing order in various ways. The invention also deals with other aspects of scotch yoke designs.