Patent ID: 7806102
Filing Date: 2010-10-05
Classification: F02B,Y02T

Abstract:
1. A variable coordination volume type eight-stroke engine comprising: a) a master cylinder ( b) a turbo-charger system connecting to the exhaust means ( c) said eight-stroke-operation consists of the master-intake-stroke, the slave-intake-stroke, the master-compression-stroke, the slave-compression-stroke, the master-expansion-stroke, the slave-expansion-stroke, the master-exhaust-stroke and the slave-exhaust-stroke; d) said 8-process-sequence consists of the master-intake-process, the slave-intake-process, the master-compression-process, the slave-compression-process, the hot-combustion-process, the injection-process, the cold-expansion-process, and the slave-exhaust-process; e) a charge-coordinate-channel ( f) a volume-control-member ( g) a engine control unit and sensor means ( h) the master-intake-process is the process to provide air into the master cylinder ( i) the slave-intake-process is the process to provide air into the slave cylinder ( j) the master-compression-process is the process to compress the air in the master cylinder ( k) the slave-compression-process is the process to compress the air into the charge-coordinate-channel ( l) the hot-combustion-process is the process to combust an air-fuel mixture as a hot-combustion-medium in the master cylinder ( m) the injection-process is the process to inject the high-density-air of the charge-coordinate-channel ( n) the cold-expansion-process is the process to expand the cold-expansion-medium in both the master cylinder ( o) the slave-exhaust-process is the process to expel the cold-expansion-medium out of the slave cylinder ( p) the initiation point of the injection-process can be set between 30 degree after the TDC of the master-expansion-stroke and 30 degree before the TDC of the slave-compression-stroke, and the minimum duration of the injection-process is 5 degree of crankshaft rotation.