| 摘要 |
The present invention provides a variable coordination volume type eight-stroke engine for increasing the fuel efficiency in the heavy load operation by regulating the maximum air-pressure in the charge-coordinate-channel and adjusting the initiation timing of the injection-process as the engine load changes; wherein the maximum air-pressure of the charge-coordinate-channel will be regulated with a buffer piston in the range of 25% to 75% of the concurrent maximum combustion pressure of the mastery cylinder. In addition the overall temperature of the master cylinder and the slave cylinder will be reduced in the heavy load condition by injecting a flow of high-density-air at lower temperature in the heavy load operation, thereby achieving better durability and higher fuel efficiency.
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