Internal-combustion engines – Two-cycle – Pump and cylinder adjacent
Reexamination Certificate
2011-05-31
2011-05-31
Kamen, Noah (Department: 3783)
Internal-combustion engines
Two-cycle
Pump and cylinder adjacent
C123S316000, C123S059600
Reexamination Certificate
active
07950358
ABSTRACT:
The present invention provides a coordination pressure management system for raising the maximum operational range of the eight-stroke engine; said coordination pressure management system includes a real-time control system for adjusting the phase-difference between the master piston and the slave piston according to the combustion condition of the master cylinder and the compression condition of the slave cylinder, so that the maximum compression pressure of the slave-compression-process is regulated within the range of 75% to 25% of the concurrent maximum combustion pressure of the master cylinder, thereby maintaining a high coordination-efficiency in any operational load and rpm condition.In addition the coordination pressure management system is able to provide a flow of high-density-air at controlled temperature in the heavy load operation, which ensures a stable cooling effect to the hot-combustion-medium of the master cylinder, so that the overall temperature of the master cylinder can be reduced in the heavy load operation for better durability and higher fuel efficiency.
REFERENCES:
patent: 5638777 (1997-06-01), Van Avermaete
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