| 摘要 |
<p>Conventional internal-combustion engines suffer from a series of drawbacks which are due to the principles of design of such engines and are therefore difficult to remedy. These drawbacks include its cyclic method of operation, oscillating parts, vibration and noise, mediocre efficiency and toxic exhaust emissions. The motor proposed is therefore designed in accordance with completely different principles and is also non-polluting. The invention concerns a low-temperature engine which obtains, operating at a low temperature, mechanical energy from thermal energy. It can be designed as a compact unit or composed of different components. A liquefied gas is delivered under high pressure by a pump (1) in a closed circuit into an evaporator (4) where it is evaporated by the supply of heat (e.g. waste heat or heat from the surroundings). The vapour thus formed is passed into an expansion device (8) where the large pressure drop causes it to be supercooled and liquefied. The fields of application of the engine are comparable with those of existing internal-combustion engines (vehicle propulsion, stationary drive units and power generation). A further application is the use of the low-temperature engine as a refrigerating machine.</p> |
