The invention relates to method for operating an internal combustion engine that has at least two combustion chambers, of which at least one is operated at a substoichiometric air-fuel ratio and of which at least another is operated at a superstoichiometric air-fuel ratio. The outlet of the internal combustion engine is connected to an exhaust gas system in which a three-way catalytic converter is arranged in the flow direction of an exhaust gas through an exhaust gas channel, and an exhaust gas heat-recovery device is arranged downstream from the three-way catalytic converter. It is provided for the unburned fuel components of the combustion chamber that is operated at a substoichiometric air-fuel ratio to be exothermally reacted with the residual oxygen from the combustion chamber that is operated at a superstoichiometric air-fuel ratio on the three-way catalytic converter, whereby the exhaust gas temperature is raised so that the exhaust gas heat-recovery device can recover a portion of the exhaust gas enthalpy downstream from the three-way catalytic converter.

Systems and methods are described for generating electricity from fluid produced from a subsurface formation. The disclosed systems and methods include generating electrical power using the energy content of fluids produced from the earth or hot fluids created during surface processing of the produced fluids. Fluid is obtained from a well in the subsurface formation and provided to a first power generation device where a pressure and a temperature of the fluid is adjusted to a pressure and a temperature compatible with the first power generation device using one or more valves coupled to the first power generation device. The first power generation device generates electricity from the fluid. One or more second power generation devices also generate electricity using the fluid where one of the second power generation devices is a thermoelectric generator.

A heat sink can be coupled to an exhaust pipe of an internal combustion engine to cool the exhaust gas and thereby increase the efficiency of the internal combustion engine. The heat sink can include a plurality of heat transfer projections extending outward from the exhaust pipe. The heat sink is a separate component that is coupled to the exterior of the exhaust pipe.

Disclosed is a system for converting mechanisms actuated by internal combustion into hybrid mechanisms, and a method for implementing the system. The system comprises: a structure for supporting and positioning an electric motor, which comprises means for setting and controlling a position of the electric motor in an area near or adjacent to the transmission shaft of an internal combustion engine; transmission means that allow power to be transmitted between the electric motor and the transmission shaft of the internal combustion engine; and securing means press-fixed to the transmission shaft of the internal combustion engine, which comprise two high-pressure supports coupled together by attachment means and which encapsulate the transmission shaft at high pressure, wherein the securing means also comprise a power transmission element attached to the high-pressure supports and which is connected to the transmission means.

A combination stove and space heater is provided, comprising a stove portion and a removable heater portion disposed over the stove portion. The stove portion includes an enclosure having a removable drawer configured to receive one or more burnable fuels, a grating suspended by the enclosure over the removable drawer and configured to be heated by burning the one or more fuels. The removable heater portion includes a radiator having a plurality of vertical plates, each having a length along a lateral axis and a height along a vertical axis, an axial fan disposed at one side of the radiator and with an axis of flow substantially parallel to the lateral axis, and a cover disposed surrounding the radiator and the axial fan, the cover having openings on opposing ends along the lateral axis.

Systems and methods to increase the recharge rate of a supplemental cooling system are provided. The system may include a primary cooling system configured to cool a thermal load, a supplemental cooling system, and a thermoelectric cooling apparatus. The thermoelectric cooling apparatus may assist the primary cooling system in recharging the supplemental cooling system in response to the supplemental cooling system operating in a recharge state, to the availability of electrical capacity, and to one or more operating parameters of the primary cooling system falling outside a predetermined range, wherein the operating parameter affects a cooling capacity of the primary cooling system.

A system for removing dust from exhaust gas, comprising a dust removing system inlet, a dust removing system outlet, and an electric field apparatus (1021). The electric field apparatus (1021) comprises an electric field apparatus inlet, an electric field apparatus outlet, a dust-removing electric field cathode (10212) and a dust-removing electric field anode (10211). The dust-removing electric field cathode (10212) and the dust-removing electric field anode (10211) are used to generate an ionizing electric field for dust removal. When a certain amount of dust has accumulated on the electric field apparatus, the electric field apparatus performs a black carbon removal process, thereby avoiding a reduced electrode gap resulting from an increased thickness of black carbon.

Disclosed is an efficient recycling system for exhaust energy of an internal combustion engine. Firstly, a thermoelectric generation device recycles high-temperature waste heat energy in the exhaust of the internal combustion engine and recycles high-temperature heat that originally radiates into the ambient atmosphere on the surface of the volute (24). Secondly, pressure energy in the exhaust of the internal combustion engine is efficiently recycled by using a turbocharging device, and the efficiency of the turbocharging device is improved through the graphite sealing device. Finally, low-temperature waste heat energy in the exhaust of the internal combustion engine is efficiently recycled by using an organic Rankine cycle device. The risk of decomposition caused by the fact that the working medium used by organic Rankine cycle works in a high-temperature environment is avoided, thereby ensuring the cycle efficiency and the working reliability of the organic Rankine cycle.

An energy recovery system and a method of recovering energy are disclosed. In one arrangement, an exhaust gas conduit system guides a flow of exhaust gas generated by a combustion process. A heat exchange fluid circuit guides a flow of a heat exchange fluid. An electrical generator generates electrical power from the flow of heat exchange fluid. The heat exchange fluid circuit is configured so that heat is transferred from the exhaust gas to the heat exchange fluid while the exhaust gas is flowing through the exhaust gas conduit system.

An engine exhaust gas treatment system, comprising an exhaust gas dust removal system and an exhaust gas ozone purification system. The exhaust gas dust removal system comprises an exhaust gas dust removal system inlet, an exhaust gas dust removal system outlet, and an exhaust gas electric field apparatus (1021). The exhaust gas electric field apparatus (1021) comprises an exhaust gas electric field apparatus inlet, an exhaust gas electric field apparatus outlet, an exhaust gas dust removal electric field cathode (10212), and an exhaust gas dust removal electric field anode (10211). The exhaust gas dust removal electric field cathode (10212) and the exhaust gas dust removal electric field anode (10211) are configured to produce an exhaust gas ionized dust removal electric field. The engine exhaust gas treatment system is able to effectively remove particles in engine exhaust gas, and the purification treatment effect for engine exhaust gas is good.