A fluid-cooled manifold is configured to cool exhaust from an engine. The fluid-cooled manifold includes a plurality of exhaust runners. Each of the exhaust runners includes a runner body having an inlet end and an outlet end, an exhaust conduit extending through the runner body, and a coolant passage extending through the runner body. The fluid-cooled manifold also includes an exhaust collection manifold including a plurality of inlets. Each inlet of the exhaust collection manifold is coupled to the exhaust outlet opening of a respective one of the exhaust runners. The fluid-cooled manifold also includes a coolant feed pipe and a coolant exit pipe. The coolant feed pipe includes a plurality of outlets coupled to the coolant inlets of the exhaust runners. Likewise, the coolant exit pipe includes a plurality of inlets coupled to the coolant outlets of the exhaust runners.

Methods and installations for treatment of exhaust gases from marine diesel engines, in particular for reduction of the sulphur oxides (SO.sub.x) in such gases, where the reaction products resulting from the mixing of an alkaline aerosol with the exhaust gases are separated-out by means of one or more rotating centrifugal separator rotors (20) of the kind comprising a stack of narrowly spaced separation discs (22).

A scrubber for cleaning exhaust fumes generated by internal combustion engines, in particular for reducing the concentration of the sulfur oxides SO.sub.x in exhaust fumes generated by the combustion of high sulfur content fuels, said scrubber comprising a main hollow tubular body, an inlet and an outlet for introducing and discharging said fumes into and from said main hollow tubular body, respectively, and inlet means for introducing at least partially atomized pressurized water into said main hollow body, wherein said inlet means comprise a plurality of nozzles arranged in said main hollow body and each adapted to dispense said at least partially atomized pressurized water.

A scrubber for cleaning exhaust fumes generated by internal combustion engines, in particular for reducing the concentration of the sulfur oxides SO.sub.x in exhaust fumes generated by the combustion of high sulfur content fuels, said scrubber comprising a main hollow tubular body, an inlet and an outlet for introducing and discharging said fumes into and from said main hollow tubular body, respectively, and inlet means for introducing at least partially atomized pressurized water into said main hollow body, wherein said inlet means comprise a plurality of nozzles arranged in said main hollow body and each adapted to dispense said at least partially atomized pressurized water.

An exhaust gas treatment apparatus is disclosed. An exhaust gas treatment apparatus according to an embodiment of the present disclosure includes a gas/liquid reactor contacting a treatment liquid and an emission-regulated gas included in exhaust gas, to absorb and remove the emission-regulated gas; a treatment liquid supply tank supplying the treatment liquid to the gas/liquid reactor; and a gas/liquid separation treatment liquid regeneration unit regenerating a waste treatment liquid in which the emission-regulated gas is absorbed, into a treatment liquid in which the emission-regulated gas is not absorbed, and supplying the regenerated treatment liquid to the treatment liquid supply tank, wherein the gas/liquid separation treatment liquid regeneration unit includes a gas/liquid separation membrane through which a gas can pass but a liquid cannot pass.

An exhaust gas treatment apparatus is disclosed. An exhaust gas treatment apparatus according to an embodiment of the present disclosure includes a gas/liquid reactor contacting a treatment liquid and an emission-regulated gas included in exhaust gas, to absorb and remove the emission-regulated gas; a treatment liquid supply tank supplying the treatment liquid to the gas/liquid reactor; and a gas/liquid separation treatment liquid regeneration unit regenerating a waste treatment liquid in which the emission-regulated gas is absorbed, into a treatment liquid in which the emission-regulated gas is not absorbed, and supplying the regenerated treatment liquid to the treatment liquid supply tank, wherein the gas/liquid separation treatment liquid regeneration unit includes a gas/liquid separation membrane through which a gas can pass but a liquid cannot pass.

A vortex generating exhaust component is installed in-line within a marine exhaust system downstream of the water can whereby a mixture of hot exhaust gas and entrained cooling water flows there through and vortex flow is enhanced by the component to increase cooling of exhaust gas by increasing the mixing of hot exhaust gas with entrained cooling water thereby resulting in enhanced exhaust gas cooling.

A cooling structure for an outboard motor comprises an oil case which has an oil chamber for storing lubricant oil for an engine. Said cooling structure further comprises: a main exhaust gas passage which guides exhaust gas to a lower side; a cooling water outbound path which guides cooling supply water taken from outside the outboard motor to an upper side, and cools the periphery of the main exhaust gas passage in the oil case by means of the cooling supply water; a cooling water inbound path which guides cooling discharge water that has cooled the engine to the lower side and cools the oil chamber by means of said cooling discharge water; and a mixed fluid passage which, on a side below the oil case, cools the exhaust gas by mixing the exhaust gas and the cooling discharge water.

A method for exhaust gas treatment in vessels/installations located in a body of water is disclosed. The method comprises admixing ambient air to exhaust gas in a dilution unit (3) resulting in diluted exhaust gas, drawing water and diluted exhaust gas into bubble generator (4) and generating bubbles containing diluted exhaust gas in the water, and releasing the bubble-containing water into the body of water. A corresponding system is also disclosed.

A method for exhaust gas treatment in vessels/installations located in a body of water is disclosed. The method comprises admixing ambient air to exhaust gas in a dilution unit (3) resulting in diluted exhaust gas, drawing water and diluted exhaust gas into bubble generator (4) and generating bubbles containing diluted exhaust gas in the water, and releasing the bubble-containing water into the body of water. A corresponding system is also disclosed.