Abstract: Apparatuses and methods related to an engine for converting heat into mechanical output using a working fluid in a closed circulating system are disclosed. In some embodiments, the engine includes a pump to pressurize the working fluid, a regenerative heat exchanger to transfer heat from a first portion of the working fluid to a second portion, a heating device to heat the working fluid, and a scroll expander to expand the working fluid and generate the mechanical output. Other embodiments may be described and claimed.

Abstract: Apparatuses and methods related to an engine for converting heat into mechanical output using a working fluid in a closed circulating system are disclosed. In some embodiments, the engine includes a pump to pressurize the working fluid, a regenerative heat exchanger to transfer heat from a first portion of the working fluid to a second portion, a heating device to heat the working fluid, and a scroll expander to expand the working fluid and generate the mechanical output.

Abstract: Apparatuses and methods related to an engine for converting heat into mechanical output using a working fluid in a closed circulating system are disclosed. In some embodiments, the engine includes a pump to pressurize the working fluid, a regenerative heat exchanger to transfer heat from a first portion of the working fluid to a second portion, a heating device to heat the working fluid, and first and second scroll expanders to expand the working fluid and generate the mechanical output. Other embodiments may be described and claimed.

Abstract: The present invention relates to the field of combustion engines and more specifically to a rotary positive displacement combustor engine. The device employs a scroll compressor and a scroll expander with an orbital shaft displaced between the compressor and expander supplying a means and link for compressing fluids within the scroll compressor and disposing the fluid within the scroll expander within which an ignition source is placed at strategic points within a pair of first isolated zones of the orbiting scroll expander generating a highly efficient process for capturing mechanical and thermal energy from combustion.