Patent ID: 7836691
Filing Date: 2010-11-23
Classification: F02G

Abstract:
1. A heat engine comprising: a high-temperature space portion and a low-temperature space portion, each of which has a working gas with a different temperature range from each other; a regenerator provided between the high-temperature space portion and the low-temperature space portion; two power pistons configured to cause volumetric changes of the working gases in each of the high-temperature space portion and the low-temperature space portion, and transmit motive energy on receipt of pressure changes of the working gases; and a displacer configured to transfer the working gases between the high-temperature space portion and the low-temperature space portion, wherein: heat and motive energy are exchanged by using the change in volume of the high-temperature space portion and the change in volume of the low-temperature space portion, the spaces being located respectively on both sides of the regenerator, as well as by using the transfer of the working gases, the two power pistons are configured to move relatively to each other, and each of the two power pistons has a pressure receiving face placed opposite the regenerator.