| 摘要 |
The present invention provides a Mackay tri-expansion cycle engine which operates with an eight-stroke master cylinder and an eight-stroke slave cylinder; the Mackay tri-expansion cycle engine intakes air and fuel into the eight-stroke master cylinder, and the air-fuel-mixture combusts in three expansion processes; the first expansion process generates power at high temperature with a hot-combustion-medium of high CO concentration; the second expansion process generates power with a cold-expansion-medium mixing from said hot-combustion-medium and a compressed air, spontaneously converting all CO content into CO2 at a controlled expansion temperature; the third expansion process generates power with a steam-rich expansion-medium at a controlled expansion temperature, in which a calculated amount of water-mixture is injected to absorb heat energy and produce steam, at same time reacting with any remained NOX, HC, and PM to reduce air-pollution from combustion process.
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