| 摘要 |
A method and apparatus for improving efficiency and reducing emissions of an internal combustion engine coupled to an inertial load. An apparatus is provided for controlling the energy exchange between engine and load so that the maximum conversion efficiency is obtained for both directions of energy flow. Valve controls make the engine a variable displacement expander or compressor so that kinetic energy received from the load by the engine may be stored as compressed air and returned to the load by the engine. These controls eliminate all fuel consumption and emissions when power is not required by the load, and utilize the stored energy in conventional engine operation.
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