Patent ID: 7270110
Filing Date: 2007-09-18
Classification: F02B,F02M,F05C,Y02T

Abstract:
1. An internal combustion engine with gas compressing crankcase, comprising: a substantially sealed crankcase; a cylinder, the cylinder comprising a sidewall extending outward from the crankcase to an upper end portion, the cylinder further comprising, adjacent the upper end portion, a head, the head further comprising an inlet defined by inlet aperture walls and an outlet defined by outlet aperture wall; an intake valve, said intake valve operably disposed adjacent said inlet; an exhaust valve, said exhaust valve operably disposed adjacent said outlet; a piston, the piston slidably mounted in the cylinder, forming an upper compressible chamber within the cylinder between the piston and the head; a crankshaft rotatably mounted in the substantially sealed crankcase; a connecting rod operatively mounted for translation of rotary motion of the crankshaft into reciprocal motion of the piston; an air inlet line, said inlet air line further comprising an inlet only valve; an inlet air compression chamber, the inlet air compression chamber fluidically disposed between said piston and said inlet only valve, said inlet air compression chamber comprising a pressure responsive displacable member; an intake air outlet line, said intake air outlet line further comprising an outlet only valve; an intake air plenum, said intake air plenum having a plenum inlet adjacent said outlet only valve and a plenum outlet adjacent the inlet of the head; wherein movement of the piston away from the head compresses gas within said substantially sealed crankcase against said displaceable member, said displaceable member responsively compressing inlet air within said inlet air compression chamber until a threshold pressure is reached, whereupon said outlet only valve opens, allowing compressed inlet air to escape into said intake air plenum.