Abstract: A displacement machine is for acting on a working fluid and is provided with a lubricant and working fluid separator. The fluid separator has a separator volume constrained by a shielding member, a first fluid channel providing fluid communication between a first and second inner volumes and the separator volume, a second fluid channel providing fluid communication between the separator volume and a working fluid return volume. The fluid separator, the first fluid channel and the second fluid channel are fully contained within a full volume of the displacement machine. A method is for separating lubricant and working fluid in a displacement machine.

Abstract: A pulse-width-regulating valve is for the regulation of a fluid flow or a fluid pressure. The pulse-width-regulating valve comprises a cut-off valve connected in series with an inflow valve, at least one of the cut-off valve and the inflow valve being provided with an axially displaceable or rotatable valve element which has an opening position or a closing position at a distance from a starting position of the valve element. A method of operating a pulse-width-regulating valve comprises: regulating a valve gear device by a valve synchronizer, in accordance with at least two displacement curves; and by one or more valve actuators, displacing or rotating corresponding valve elements arranged in the pulse-width-regulating valve.

Abstract: An external-heat engine device working on a Rankine cycle, and preferably an organic Rankine cycle. The external-heat engine, which is designed to give operational advantages, includes a cylinder block, a top cover and a bottom tray with sealing surfaces arranged to be joined together and to rest against complementarily fitting covers, each sealing surface resting sealingly against only one opposite sealing surface.

Abstract: An inlet-valve arrangement is for an external-heat engine, which includes at least one working chamber, each one having a cooperating piston. The working chamber is supplied with a working fluid via at least one controlled poppet valve. The poppet valve is arranged to open in the opposite direction to the flow direction of the working fluid. The center axis of the poppet valve is arranged perpendicularly within a deviation of ±45 degrees relative to the center axis of the piston.

Abstract: An external-heat engine device working on a Rankine cycle, and preferably an organic Rankine cycle. The external-heat engine, which is designed to give operational advantages, includes a cylinder block, a top cover and a bottom tray with sealing surfaces arranged to be joined together and to rest against complementarily fitting covers, each sealing surface resting sealingly against only one opposite sealing surface.

Abstract: A device and a method are for the operational and safety control of a heat engine, which has a working-fluid path including a high-pressure path and a low-pressure path. The heat engine uses a condensable working fluid which, at least in part of the high-pressure path, is in the liquid phase. A fluid-drainage path, which is selectably open or closed, is connected to a portion of the high-pressure path in which the working fluid is mainly in the liquid phase.

Abstract: A combined heat and power plant has at least one primary heat source thermally connected to a heat distribution network for heat energy via one or more primary heat exchangers. At least one secondary heat source is thermally connected to one or more energy converters arranged to, when an amount of heat energy is supplied from the at least one secondary heat source, generate an amount of electrical energy for an internal electricity distribution network in the combined heat and power plant. A method is for operating a combined heat and power plant.

Abstract: A pulse-width-regulating valve is for the regulation of a fluid flow or a fluid pressure. The pulse-width-regulating valve comprises a cut-off valve connected in series with an inflow valve, at least one of the cut-off valve and the inflow valve being provided with an axially displaceable or rotatable valve element which has an opening position or a closing position at a distance from a starting position of the valve element. A method of operating a pulse-width-regulating valve comprises: regulating a valve gear device by a valve synchronizer, in accordance with at least two displacement curves; and by one or more valve actuators, displacing or rotating corresponding valve elements arranged in the pulse-width-regulating valve.

Abstract: A combined heat and power plant has at least one primary heat source thermally connected to a heat distribution network for heat energy via one or more primary heat exchangers. At least one secondary heat source is thermally connected to one or more energy converters arranged to, when an amount of heat energy is supplied from the at least one secondary heat source, generate an amount of electrical energy for an internal electricity distribution network in the combined heat and power plant. A method is for operating a combined heat and power plant.

Abstract: A method and arrangement are for heat exchanging in and work exchanging with a working fluid in a heat engine, or a heat pump if the method and its sub-processes are substantially reversed.

Abstract: A thermal power station system has at least one heat engine connected to at least one work receiver. The heat engine is arranged to be able to utilize a working fluid alternating between liquid and gas phase. In the heat engine is arranged at least one heat exchanger in thermal contact with at least one expansion chamber. A method is for energy supply to a building or a vessel.

Abstract: A method and arrangement are for heat exchanging in and work exchanging with a working fluid in a heat engine, or a heat pump if the method and its sub-processes are substantially reversed.