A power system for converting waste heat from exhaust gases of an internal combustion engine to electrical energy includes an aftertreatment assembly positioned within a first housing. The power system also includes an evaporator assembly positioned within a second housing. The evaporator assembly is positioned directly adjacent the aftertreatment assembly. The evaporator assembly includes a first portion of a working fluid loop in thermal communication with a first length of an exhaust conduit that extends from the aftertreatment assembly into the second housing. The power system also includes a power pack positioned inside a third housing. The power pack is positioned directly adjacent the evaporator assembly opposite to the aftertreatment assembly. The power pack includes a tank, a condenser, a pump and an expander fluidly connected by a second portion of the working fluid loop. The second portion is fluidly connected to the first portion of the working fluid loop.

An exhaust heat recovery unit that includes: a lead-in pipe that leads a heat medium from outside an exhaust pipe, via an inlet portion of an heat exchanger, into the heat exchanger; a lead-out pipe that leads the heat medium out from the heat exchanger, via an outlet portion of the heat exchanger, outside the exhaust pipe; and a pair of seal members that seal a space between the inlet portion and the lead-in pipe and a space between the outlet portion and the lead-out pipe, with at least one of the pair of seal members including an O-ring disposed in a position in which the at least one of the pair of seal members does not contact exhaust gas flowing through the exhaust pipe and in which the at least one of the pair of seal members contacts the heat medium.

A magnetic fluid drive unit 100 having a double tube 10 comprising an inner tube 11 and an outer tube 12 formed on the outer side of the inner tube 11, and a magnetic field applicator 30 installed on the outer side of the double tube 10, the inner tube 11 having, in the region where a magnetic field is applied by the magnetic field applicator 30, a high heat conducting region 21 and a low heat conducting region 22 aligned in the lengthwise direction of the inner tube 11, the inside of the inner tube 11 being a heating medium flow path, and the area between the inner tube 11 and the outer tube 12 being a magnetic fluid flow path.

Disclosed are apparatus and corresponding methodology for a compression clamped exhaust catalyst which is incorporated into a marine exhaust header. A serviceable exhaust catalyst is compression clamped and sealed inside an enclosure associated with a marine exhaust system while still maintaining serviceability. The catalyst is seated on an inset bead or ring on the inside of the enclosure. A ring cooperates with the enclosure to clamp a mating exhaust pipe, with a gasket situated between the two. Other structures are provided to compress the catalyst in the enclosure as it is sealed. As seated, the exhaust catalyst is held into place with a compression fit to limit its longitudinal movement while still remaining accessible for servicing.

An absorption chiller system includes a generator section, a condenser section, an evaporator section and an absorber section all in fluid communication with each other and which operate to circulate a refrigerant therethrough. The evaporator section includes a transport membrane heat exchanger. The transport membrane heat exchanger includes a first and a second flow path. The first flow path is operable to flow the refrigerant therethrough under a vacuum pressure that is low enough to vaporize the refrigerant within the first flow path. The second flow path is operable to pass a fluid having water therethrough. Both water and heat are transferred from the fluid in the second flow path to the refrigerant in the first flow path through a membrane-based material of the transport membrane heat exchanger, such that the fluid passing through the second flow path has at least a portion of its water removed and is cooled.

An exhaust gas system for a hydrogen combustion engine including for a vehicle, the exhaust gas system including: a first engine exhaust gas cooler accommodating a flow of engine exhaust gas therethrough for dissipating heat from the engine exhaust gas; a separator being configured to separate condensate contained in the engine exhaust gas in a region of the first engine exhaust gas cooler and/or downstream of the first engine exhaust gas cooler; and, an engine exhaust gas heater being configured to warm the engine exhaust gas in a region of the separator and/or downstream of the separator.

An automotive vehicle includes an internal combustion engine that outputs exhaust gas from a cylinder, and an active thermal management system. The active thermal management system flows coolant around the cylinder thereby varying an exhaust temperature of the exhaust gas. An electronic engine controller controls the internal combustion engine and the active thermal management system. The engine controller generates a control signal to selectively operate the active thermal management system in a normal mode, a thermal increase mode, and a thermal decrease mode. The normal mode flows the coolant at a first coolant temperature. The thermal increase mode flows the coolant at a second coolant temperature greater than the first coolant temperature thereby increasing the exhaust temperature of the exhaust gas. The thermal decrease mode flows the coolant at a third coolant temperature less than the first coolant temperature thereby decreasing the exhaust temperature of the exhaust gas.

An exhaust conduit for a marine exhaust system includes an inlet end portion connectable to an exhaust manifold, an outlet end portion that directs exhaust gases toward an exhaust system outlet, a catalytic converter assembly arranged between the inlet and outlet end portions, and inner and outer tubes. The inner tube directs exhaust gases from the exhaust manifold to the catalytic converter assembly, and the outer tube surrounds the inner tube to define a cooling liquid passage between the inner and outer tubes. A flange is secured to the inner and outer tubes at inlet ends thereof, the flange being connectable to an outlet of the exhaust manifold. The inner tube has a uniform diameter between the flange and the catalytic converter assembly, and is welded to the flange independently of the outer tube. First and second welds join the inner and outer tubes to the flange at radially inner and outer faces, respectively, of a flange rim.

The embodiment of the invention provides a marine diesel power system comprising a diesel engine, a conformal heat exchanger with a first inlet and a first outlet thereof connected to the diesel engine and upper and lower sealing heads thereof as well as a second inlet and a second outlet for inflowing and discharging seawater, and a jet device at a second outlet of the conformal heat exchanger, wherein a first inlet, a second inlet and an outlet of the jet device are separately used for sucking seawater discharged from the second outlet, connecting to a diesel engine exhaust tube and discharging seawater and waste gas discharged from the diesel engine exhaust tube. By arranging the jet device at the second outlet, the heat exchange form of the conformal heat exchanger is changed into forced convection heat exchange, so that the heat exchange efficiency of the conformal heat exchanger is improved.

A cooling device for an additive injection valve is connected to a circulation circuit for coolant in parallel with a different cooling device. The cooling device includes a coolant path through which the coolant flows, and a movable member that receives a flow of the coolant and shifts to vary a passage area of a predetermined portion of the coolant path.