Abstract: A cleaning system for automobile exhaust gases has a perforated inlet allowing the gases to enter a sump area containing liquid for washing the gases. Nozzles spray cleaning liquid onto the washed gases passing through gas-permeable baffle plates, the cleaning liquid dropping into the sump area below. The cleaning liquid then passes to a tank for separating out pollutants and the gases pass to a second chamber for spray washing while passing through a further series of gas-permeable baffle plates. The cleaned gases are filtered in a separator box before passing into the atmosphere. Crankcase vapors may also be added into the stream of exhaust gases and cleaned in the system of the invention.

Abstract: Several embodiment of small boats having improved exhaust systems for precluding the entry of water into the engine combustion chambers from the body of water in which the watercraft is operating. In each embodiment, the exhaust system includes a horizontally extending expansion chamber with an exhaust gas outlet whichis defined by a vertically extending tube in the expansion chamber so as to prevent the likelihood of water reentering the engines through the exhaust system. Several arrangements are disclosed for draining the water from the expansion chamber and the exhaust gases are discharged from the engine into the tunnel around the jet drive unit.

Abstract: Engine exhaust gas containing soot is bubbled through a magnesium-water mixture and the resulting mixture is fed to the intake of the engine.

Abstract: In a marine propulsion system including an internal combustion engine, a mixing tube assembly is disposed between an exhaust manifold and a discharge pipe for discharging mixed water and exhaust. The mixing tube assembly is adapted for connection to the exhaust manifold by means of a resilient connector member, such as a flanged rubber boot. This form of connection allows the adjacent surfaces of the mixing tube and the manifold to be non-machined, and provides suspension of the mixing tube from the manifold. The mixing tube includes an exhaust passage having a water jacket therearound for cooling exhaust passing therethrough. A water inlet is provided for introducing water into the water jacket. Water is discharged from the water jacket through a circumferential water discharge outlet, and exhaust is discharged from the exhaust passage through an exhaust outlet.

Abstract: An exhaust gas processing device and method are disclosed for removing particulate and other materials from hot exhaust gas while muffling operational noises produced by the system emitting the exhaust gas. The device includes first, second and third portions through which the exhaust gas is successively passed, with the first portion receiving the exhaust gas and a liquid that is vaporized to coagulate particulate matter in the gas, the second portion including filters for removing particulate material coagulated in the first portion, and a with the third portion including a liquid containing reservoir and a filter for further cleansing the gas and also heating the liquid in the reservoir, which liquid is introduced into the first portion for vaporization thereat. The device and method are particularly useful in cleaning air exhausted from an internal combustion engine that may be used, for example, to power a motor vehicle.

Abstract: A marine engine exhaust muffler assembly (8) includes inlet and outlet members (10, 11), the axes (13, 14) of which are offset from each other. A muffler housing (12) is disposed between the inlet and outlet members and forms a chamber (15) having disposed therein an annular multi-layered cartridge (23), and with the layers having a multiplicity of perforations (27) therein for passage of exhaust gases and spent engine cooling water therethrough. The water assists in keeping the muffler clean. An imperforate arcuate blocking plate (31) is nested within the lower portion of the cartridge to permit accumulation of the spent engine cooling water within the cartridge to aid in noise reduction at certain engine speeds. The blocking plate is provided with a relief opening means (33) for assisting in water drainage upon engine shutoff.

Abstract: An improved muffler system for internal combustion engines recovers heat energy of exhaust gases by spraying a fluid into the exhaust stream in order to absorb the heat energy of the exhaust gases. The heated fluid is collected at the bottom of the muffler vessel and the stored heat energy is transferred to a second fluid via a counter-current liquid to liquid heat exchanger. The heat energy from the second fluid is then removed and utilized, for example, to condition passenger spaces.

Abstract: A marine engine exhaust assembly (7) is provided with water flow path control devices which minimize back pressure. Lower intermediate elbow portions (8) and the respective bullhorn upper legs (12) are formed and joined in a manner to provide a continuous common gas-water passage which is axially linear in a fore-to-aft direction. The common gas-water passages are formed to provide a gradual reduction in cross-sectional area from top to bottom. The wall contours of the intermediate elbows gradually merge from circular at the upper end to generally elliptical at the lower end. In addition, the wall contours of the upper bullhorn legs are generally elliptical (FIG. 5) at their upper ends for communicating with the intermediate elbows, and gradually merge into a rectangular shape (FIG. 6) in the area of the bullhorn bends (13), which continues on to adjacent the bullhorn discharge portion.

Abstract: An improved exhaust system for water craft engines is disclosed, which consists in the main an exhaust manifold connected to the cylinder exhaust port of the engine, an exhaust pipe joined at one end to the exhaust manifold and a diffuser connected at one end to the other end of the exhaust pipe and at the other end to the rest of the exhaust system including a muffler and steam separator. The exhaust pipe is divided into two axial parts, the first vertical, largely U-shaped pipe portion for direct connection to the exhaust pipe at downstream thereof and the second horizontal pipe portion for connection at one end thereof to the first pipe portion at downstream thereof and at the opposite end to the diffuser. The second pipe portion is disposed to extend adjacent to the exhaust manifold and made integral therewith in a rigid assembly, with the first pipe portion being releasably secured to the exhasut manifold and second portion through bolts for easy disassembly in servicing.

Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.

Abstract: A portable engine-pump assembly for use in firefighting applications is constructed of a high-speed, lightweight engine and a double-suction pump. The engine is arranged with a vertical crankshaft for driving the pump which is mounted adjacent thereto with a vertical pump shaft coupled to the crankshaft. The assembly is designed to provide high lift, high efficiency and a steady high flow volume and to be compact and light in weight.

Abstract: A moisture inhibitor comprising a housing having a cavity, an entrance port passing through the housing to the cavity of the housing and an exit port passing through the housing to the cavity of the housing and a dividing wall inside the housing in the cavity of the housing coupled to the housing between the entrance port and the exit port wherein the dividing wall rises up in the cavity of the housing above the entrance port and above the exit port and a lower trap coupled to the housing below the entrance port and a sloped floor coupled to the housing below the entrance port which slopes down and away from the entrance port towards the lower trap and is coupled to the lower trap and an upper trap coupled to the housing in the cavity of the housing above the entrance port and a sloped wall coupled to the dividing wall so that the sloped wall slopes down and away from the entrance port towards the exit port and cooling means.

Abstract: A multi-chambered air cleaning device is disclosed for removing particulate and other material from air passing through the device, as is a method for removing particulate and other matter from exhaust air. The device includes a front portion for collecting hot exhaust air to be cleaned and vaporizing the same to coagulate particulate matter in the air, and a back portion with a plurality of filters for removing the particulate material as well as other impurities such as gaseous odors. The device is particularly useful to clean air exhausted from a tail pipe connected with an internal combustion engine, and is also useful to clean gases emitted from pipes and/or stacks connected with combustion-type devices such as are commonly found in industrial plants.

Abstract: A marine propulsion system (2) is provided with an exhaust elbow (10) having an intake exhaust passage (22) extending upwardly from the engine (4) and communicating through a bend (24) with a discharge exhaust passage (26), and a water jacket (27) having pockets around the exhaust passages for cooling the latter. A central channel (44) extends longitudinally along the exterior of the exhaust passages to guide water therealong to the end (42) of the discharge exhaust passage to mix with exhaust thereat. The central channel has a pair of sidewalls (50 and 52) extending longitudinally and laterally tapered away from each other (54 and 56) at the outer end of the discharge exhaust passage to create an outward draw from the central channel to minimize break-up of longitudinally outward water flow and maintain the end tip of the discharge exhaust passage dry and prevent water ingestion and creeping back into the discharge exhaust passage due to pulsations of the engine.

Abstract: The engine (11) of a stern drive (10) is provided with a vacuum relief valve (28) to relieve any vacuum which may occur in the exhaust manifold (16), thus preventing water from entering the engine through the exhaust system. The relief valve (28) is connected to allow one-way flow from the intake manifold (15) to the exhaust system, thus providing an essentially closed system.

Abstract: A fluid cooler for hydraulic or other fluids in the marine drive is provided in the exhaust pipe of a marine drive so that cooling water in the exhaust pipe may remove heat from fluid in the cooler. The cooler may comprise fins on the exterior of the portion of the exhaust pipe containing the cooling water. The fins extend into a chamber through which the fluid circulates. Or, the cooler may comprise a pipe embedded in the wall of the portion of the exhaust pipe containing the cooling water. The fluid flows through the pipe for cooling.

Abstract: A method of disposing safely and efficiently polychlorinated biphenyl (PCB) waste liquids. The PCB liquid is blended with fuel and the mixture is subjected to combustion in a self-contained system. Optionally, hydrochloric acid is recovered from the exhaust gases.

Abstract: The invention provides a pair of exhaust gas separation stages comprised in a gas separating vortex tube having an exhaust gas operated turbine impeller or rotor with stator wheels. The system combination also includes a mixing chamber for heavier and lighter combustible gas components subsequent to separation, wherein such components are directed to the top surface of a water charge in the mixing chamber, and further includes a pair of chemical separation chamber downstream of the mixing chamber containing specified chemicals wherein the mixing chamber removes substantial parts of formaldehyde and nitrous oxides while the chemical chambers remove acetaldehyde and higher aldehyde components. Finally, the gas mixture from the chemical separation chamber passes through a water scrubber to remove traces of chemicals which may be used to keep traces of chemicals in the chemical chamber from reaching the engine.

Abstract: An outboard engine has a casing, an internal combustion engine with a water cooling circuit and an exhaust pipe. The exhaust pipe discharges exhaust gases into an expansion chamber, and gases from the expansion chamber are discharged into the body of water in which the vessel propelled by the engine floats. The exhaust pipe projects into the expansion chamber and has pores (perforations) near its outlet end. Coolant water is discharged into the expansion chamber and mixes with the exhaust gases. Gas flow through the pores discourages reverse flow of water droplets through the exhaust pipe to the engine cylinders.

Abstract: Rubber bushings used in suspending an outboard engine are protected against thermal degradation by cooling them. Preferably the engine exhaust pipe is cooled near a supporting casing further to protect the bushings from overheating.

Abstract: A device is disclosed for treating exhaust gases from an internal combustion engine having a gas inlet adapted to be connected to the exhaust of the internal combustion engine and a plurality of serially arranged interconnected reaction chambers. The first of the chambers is connected to the gas inlet and includes a gas outlet forming a gas inlet into a second chamber. The second of the chambers has a gas outlet forming a gas inlet with a third chamber, and so on. The last reaction chamber has a gas outlet to atmosphere. A perforated gas deflector plate is mounted transversely of the path of gas flow in alignment with each outlet of the reaction chambers and spaced inwardly into the reaction chamber associated with the outlet. Means are provided for spraying purifying fluid containing an aqueous solution of sodium percarbonate and sodium bicarbonate into each reaction chamber and drain means associated with each reaction chamber draining the remains of the aqueous solution from the housing.

Abstract: An exhaust gas scrubber includes a closed tank partially filled with a pool of water and a core assembly within the tank. The assembly includes a vertical cylindrical mixing tube open at its opposite ends and extending above and below water level, an upwardly opening cylindrical deflector cup at the bottom of the tank with its opening concentrically spaced within the lower end of the mixing tube, and a downwardly opening cylindrical deflector hood concentrically receiving the upper end of the mixing tube. Exhaust gases are introduced into the tank through a gas inlet tube, which extends downwardly concentrically through the deflector hood and mixing tube to discharge the gases through its open lower end into the cup. The gases are deflected upwardly into an annular mixing and expansion chamber within the mixing tube through an annular gas orifice defined by an upper side wall of the cup and lower side wall of the inlet tube.

Abstract: An automobile dirty smoke eliminator which mainly consists of two oval tin plates externally, and upper and lower exhaust pipes, left and right support plates, a blade, a discharge chamber, a discharge pipe, etc. internally. The principle of the present invention mainly consists in making use of the effect of mixing water and gas to entirely eliminate automobile dirty smoke. When the dirty smoke (exhaust gas) of automobile enters into the lower exhaust pipe of the present invention, the blade at the outlet of said lower exhaust pipe submerged in water is impacted by the compression force derived from the engine exhaust stroke so as to generate a mixture of said water and exhaust gas and to form a whirlpool having many buddles. The effect of walls of left and right support plates promote the toxin in the said dirty smoke (exhaust gas) automatically to deposit in the said water.

Abstract: Combustion products having water vapor mixed therewith are conducted along a helical path by a heat transfer conduit in surrounding relation to a cylindrical cooling zone. A blower at one axial end of said cooling zone induces an axial inflow of air that is radially discharged through the gaps between adjacent coil sections of the heat transfer conduit causing condensation of the water and entrainment therein of noxious components of the combustion products. Additional cooling may be provided through an evaporator coil within the cooling zone.

Abstract: An air pollution control device for use with automobile engines for filtering crankcase and exhaust emissions. The device comprises a filtering chamber containing fluid coated filtering material having an inlet of a first diameter, an outlet of a second, larger diameter to cause a decrease in internal pressure of the air-pollutant mixture entering through the inlet, a controlled gas flow path through the filtering material in the device, a source of fluid for renewing the fluid coating on the filtering material, a fluid reservoir and means for recirculating the fluid for the filtering material. A pair of such devices, one for use with the crankcase emission blow-by system and one for use with the exhaust system of an internal combustion engine provides significant reduction in all exhaust emissions from the engine. Filtering material fluid for each device is recirculated using an independent recirculating system or utilizing the oil circulation system of the engine.

Abstract: A fog smoke-filtrating and muffling device utilized by vehicle is an apparatus utilizing an intake pipe to lead the waste gas of engine to blow the water, which is contained in a tank, to disperse to become a fog. The carbides and impurities in the waste gas can be dissolved in the water. Then, in a evaporation chamber and a releasing chamber, the water droplets and waste gas can be separated from each other, and the purified waste gas is exhausted. The water droplets can be collected and filtrated through a reservoir. The water in the reservoir can be used again. Meanwhile, the water in the tank of this invention can absorb the noise and the shock of engine. The cyclic flow of water in this invention can cool the engine as well.

Abstract: Apparatus for treatment of exhaust gas from internal combustion engines, for use in underground mine workings, comprises an exhaust pipe with a water jacket, and a conditioner chamber retaining a bath of water through which the exhaust gas flows in passing through the inlet to the outlet of the chamber, the chamber further including means for condensing water vaporized from the bath by passage of exhaust gas therethrough and for discharging such condensed water back to the bath. The apparatus may include a heat exchanger upstream of the conditioner chamber and containing a system of plates or webs which sub-divide the gas flow path through the heat exchanger into passageways, the plates or webs being connected to the inner wall of a water jacketed casing of the heat exchanger.

Abstract: An exhaust gas-cooling water separation chamber, a gas collection chamber and gas acceleration and gas flow-shaping conduit means. The entrance of the separation chamber is connectable to water coolant and gas exhaust tubes from a marine engine. The separation chamber is fitted with a water deflector disposed below the gas exit from that chamber, while a gas dam is disposed in the water exit from that chamber, the entrance and water exit going below the deflector level. The gas collection chamber is connected to the gas exit and a gas acceleration chamber which tapers downstream is connected to the gas collection chamber.

Abstract: In an outboard motor having an engine located above the water level, a lower unit is provided extending downwardly from the engine and includes an exhaust gas tube within the lower unit with its lower end positioned below the water level. Laterally enclosing the exhaust gas tube is a liquid jacket and a heat insulating jacket is positioned between the exhaust gas tube and the liquid jacket for maintaining the temperature of the exhaust gases at a level such that an afterburning of any oil residue in the exhaust gases is achieved before the gases are discharged from the exhaust gas tube.

Abstract: In an outboard motor, the engine exhausts through the drive shaft housing in which an exhaust tube directs the gases into a lower propeller unit secured to the housing. The exhaust tube has support lugs on the opposite top sides. Bushings encircle each lug and they rest in receptacles on the upper interior portions of the housing. An adapter plate is secured to the housing, clamps the lugs in place and moves the lower end of the tube into sealing relationship within a lower bushing within the housing. The lower bushing is a rubber-like annular bushing having a projecting ledge aligned with the lower end of the exhaust tube. The inner wall of the bushing has an inwardly and downwardly extended lip deflected and sealing with the side of the exhaust tube.

Abstract: A marine exhaust system for boats powered by an internal combustion engine is disclosed. An exhaust chamber is located in the stern of the boat and is connected to the engine exhaust manifold. A submerged exhaust port emits exhaust gases below the water level to silence exhaust noise. The exhaust port has a recessed opening so that relative movement of water past the port assists in drawing the exhaust gases from the chamber. Atmospheric vent holes communicate the chamber with atmosphere to exhaust gases when the boat is idling or operating at slow speeds.

Abstract: Engine Exhaust Purifier-Muffler comprising a box type body, a cylindrical filter connected to the exhaust pipe of engine is located at rear bottom conner inside the box, a plurality of perforated plate filter elements are stepwisely disposed inside the box to reach toward the top, under the ceiling, a filter of square cross section is further provided, after the said filter, an outlet section is provided to connect to an outlet pipe. Porous plastic material such as polyurethane foam is used as filter medium in all the abovesaid filters. Water is half filled within the box. The box is also provided with a water inlet, an overflow opening and a drain for discharge the water. Waste gas passes through water and filter elements discharged from the outlet contains much less hazardous components and is eliminated from noise.

Abstract: An anti-pollution exhaust system for vehicular-mounted internal combustion engines. The exhaust system is separate from but cooperates with the normal engine cooling system and supplements the normal engine exhaust system. Engine exhaust gases are conveyed to and mixed with a liquid such as water or an antifreeze solution in a receiving tank. The liquid dissolves and retains therein both soluble and solid pollutants from the gases. The cleansed gases are separated from the pollutant-retaining liquid and vented to the atmosphere by a separating tank. Pumps driven by the engine are included to recirculate the pollutant-adsorbing liquid in the exhaust system. Means for cooling the exhaust gases prior to mixing with the liquid are included.

Abstract: An improved gas scrubber is provided which is particularly suited for cleaning and cooling the exhaust gases from a diesel powered mine vehicle. The invention is embodied in apparatus including an enclosure which is partially filled with a liquid such as water. An inlet for the exhaust gases is located above the liquid level, as is also an outlet for the cleaned gases to escape. A tube connected to the inlet extends downwardly to below the water level, then changes direction and extends upwardly with constantly increasing cross section and with at least some portion of it in curvature to an open end interiorly of the enclosure and above the liquid level. One or more orifices in the submerged portion of the tube admit water droplets which are sucked into and turbulently mixed with the high velocity gases in proportion to the amount of combustion exhaust from the engine.

Abstract: Disclosed herein is a marine propulsion device comprising an engine including a bottom face with an exhaust gas passage port, together with a lower unit connected to the bottom face and including a side surface, and an exhaust gas passage communicating with the engine port and terminating in a port in the side surface, and an exhaust gas passage conduit connected to the lower unit in communication with the port in the side surface and extending upwardly therefrom to above the power head and thence downwardly. The engine includes a cooling jacket, and the lower unit has a substantially closed cavity including a gear box portion and a sleeve portion, together with a water jacket cavity surrounding the sleeve portion, and water inlet means communicating with the water jacket cavity.

Abstract: This invention provides an exhaust gas cleaner comprising apparatus for removing particulate matter from hot exhaust gases, the particulate matter being too fine to be removed from the exhaust gas directly by the filter in the apparatus. The apparatus in accordance with this invention comprises water-exhaust gas contact means, wherein water vapor is added to the exhaust gas, cooling means for cooling the exhaust gas and causing condensation of the water vapor in the exhaust gas as water droplets surrounding the fine particles, and filter means for removing the water droplets from the exhaust gas, thereby simultaneously removing the fine solid particles.

Abstract: A system for purifying heated exhaust gases discharged from an internal combustion engine, a furnace, or the like. The system includes a novel rotating finned tube heat exchanger of generally cylindrical configuration. The exchanger has a plurality of longitudinally extending conduits which direct the exhaust gases back and forth between opposite end chambers of the heat exchanger. The gases are additionally passed, as required depending upon the type of pollutants they contain, through a series of purification devices which may include a novel afterburner to rid the gases of entrained unburned fuel, one or more water bath devices to cleanse the gases, and a separator to removed unburned compounds.

Abstract: An exhaust gas purifier and silencer for a vehicle is disclosed. More particularly, a new device for the purifying exhaust gases employing a conduit and a container for a gas scrubbing liquid is disclosed in which the conduit passes through the container in a loop having a perforated section, one portion of which is normally below the liquid level and the other portion is above the liquid level.