Patent ID: 9523310
Filing Date: 2016-12-20
CPC Classification: F01C,F01L,F02B,F02M,Y02T

Claim Text:
1. A method of operating an internal combustion engine having a housing, a piston rotatably mounted in the housing and coupled to a shaft, and wherein occur phases of compression, combustion, and expansion in the housing, and wherein, in the compression phase, air introduced through an intake port into the housing is compressed by reducing volume of a compression chamber in the housing from an initial volume to a second volume that is less than the initial volume, and wherein the housing includes an exhaust port through which are passed gases resulting from combustion of fuel during the combustion phase, the method comprising: providing a recess in the housing and configuring the piston so that during a rotation of the piston, the piston at least in part covers the recess during the combustion phase to form a constant volume combustion chamber and during the expansion phase defines at least in part an expansion chamber volume that undergoes expansion of gases from combustion while the expansion chamber volume increases to a third volume that is larger than the initial volume; introducing the fuel into the recess, the fuel mixing with compressed air to form a mixture of compressed air and fuel; and igniting the mixture of compressed air and fuel in the combustion phase,