3results about "Special engines" patented technology

The invention relates to a multi-temperature double-acting piston (201), which comprises a peripheral sealing ring (220), a lower hot crown (226) and / or an upper hot crown (232), and translates in a cold cylinder (204) of a heat engine (202) which has a lower yoke (213) and an upper yoke (214), said piston (201) comprising a central piston pin (210), the lower piston rod (211) of which passes through the lower yoke (213) to be connected to power transmission means (205) housed in a transmission housing (206), and the upper piston rod (212) of which passes through the upper yoke (214) in order to open into a cooling and piston lubrication chamber (217), wherein a lubrication-cooling gallery (227) arranged in said pin (210) places said chamber (217) in communication with said housing (206) via an internal piston volume (228).

A system for energy conversion including a closed cycle engine having a piston body defining a hot side and a cold side and having a piston assembly movable within the piston bod. An electric machine is operatively coupled with the piston assembly and is operable to generate electrical power when the piston assembly is moved within the piston chamber. A control system includes one or more sensors operable to detect a piston movement characteristic of the piston assembly movable within the piston body. A controller is communicatively coupled with the one or more sensors and a controllable device. The controller is configured to determine a control command based at least in part on data received from the one or more sensors. The control command is selected based at least in part to cause the electric machine operatively coupled with the piston assembly to generate a preselected electrical power output.

A micro-heat engine that performs highly efficient heat conversion using a temperature difference may include a housing having a high-temperature side and a low-temperature side, a plurality of pistons disposed within the housing and each extending from the high-temperature side to the low-temperature side, and a plurality of regenerators, each configured to be positioned between two adjacent pistons and configured to store heat generated when the working gas moves between the adjacent pistons.