Patent ID: 7950358

Claim:
An eight-stroke engine with coordination pressure management system including: a) a master cylinder and a slave cylinder for generating power in an eight-stroke-cycle; b) a master piston associated with said master cylinder and connected to a master crankshaft; c) a slave piston associated with said slave cylinder and connected to a slave crankshaft; d) a crankshaft-phase-adjustor for actively configuring phase-difference between said master crankshaft and said slave crankshaft, said phase-difference ranging from 60 degree to 150 degree; e) a master-intake-valve associated with said master cylinder for admitting air into said master cylinder; f) a slave-intake-valve associated with said slave cylinder for admitting air into said slave cylinder; g) an ignition means and a fuel supplying means associated with said master cylinder for combusting an air-fuel-mixture as a hot-combustion-medium in said master cylinder; h) a coordinate-valve and a coordinate-port associated with both said master cylinder and slave cylinder, wherein said coordinate-valve effecting an injection of the high-density-air, compressed by said slave piston, into said master cylinder after the hot-combustion-medium has decreased a sufficient pressure; said coordinate-port effecting an air-passage for transferring a cold-expansion-medium, formed in said master cylinder, to said slave cylinder; i) a slave-exhaust-valve associated with said slave cylinder for expelling the cold-expansion-medium out of said slave cylinder; j) a coordination pressure management system for actuating the crank-phase-adjustor to actively reconfigure said phase-difference in response to changes in the power output of said eight-stroke engine.