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7628663 Marine engine exhaust system with cooling arrangement  
A marine engine exhaust system is provided. The system includes a first and second manifold. A first conduit is in fluid communication with the first manifold so that a first gas is transferred...
7625257 Exhaust gas recirculation cooling system for an engine of an outboard motor  
An outboard motor is provided with an exhaust gas recirculation (EGR) system that provides a heat exchanger which reduces the temperature of the exhaust gas prior to introducing the exhaust gas to...
7556548 Exhaust device for outboard motor  
An exhaust device for an outboard motor includes an engine having a plurality of cylinders, a first expansion chamber case for collecting exhaust from a first part of the plurality of cylinders and...
7552586 Marine exhaust system with a downstream oxygen sensor located away from a water reversion liquid trajectory path  
A marine engine exhaust system has an oxygen sensor located within a catalyst housing structure and downstream from a catalyst device. The oxygen sensor is located away from a reversion liquid...
7517266 Method and device for discharging exhaust gases of internal combustion engine of boats into the water surrounding the boats  
A method for the efficiency-increasing discharging of exhaust gases of internal combustion engines of boats into the water surrounding the boats is disclosed. The exhaust gases and a flow of water...
7390232 Exhaust system for a marine engine  
An exhaust system for a marine propulsion system includes first through fifth exhaust conduit members, including a pair of serially connected marine exhaust elbows laterally spanning the engine.
7367857 Exhaust structure for small watercraft  
To provide an exhaust structure for a small watercraft that can cool exhaust gas, reduce the size and weight, and thereby cost of a backflow prevention chamber. An exhaust structure for a small...
7361282 Separator of floating components  
A buoyant component separator is disclosed for removing at least some floating contaminants from fluids. The component separator may be used with a marine engine exhaust system to reduce...
7343892 Air-cooled diesel outboard motor  
An air-cooled diesel outboard motor comprising an air-cooled diesel engine. The diesel engine includes a vertical crankshaft, an exhausting port and a drive-leg. The drive leg includes a gear-box,...
7314044 Marine emissions control  
A marine engine has an exhaust system including a catalyst cooled by a flow of coolant, a coolant injector that injects coolant into the flow of exhaust at a point downstream of the catalyst, and a...
7160161 Reduced pressure mixing device for marine vessel exhaust gas  
A reduced pressure mixing device is for marine vessel exhaust gas with water, with the gas/water mixture that is produced in the device being passed out into the water in which the ship is...
7065961 Exhaust system with an integral moisture trap  
A moisture trap is formed as an integral part of the wall of an exhaust conduit. Tapered surfaces can be provided to direct condensate downwardly and into a reservoir of the moisture trap where the...
7001231 Dual water injector for primary and idle relief exhaust passages  
A water cooling system for an outboard motor provides a water conduit that extends through both an idle exhaust relief passage and a primary exhaust passage. Water within the water conduit flows...
6929520 Cooling method for a marine propulsion system  
A method for cooling a marine propulsion system directs a portion of a recirculating stream of cooling water to a first port of an exhaust manifold so that a cooling jacket of the exhaust manifold...
6821171 Cooling system for a four cycle outboard engine  
A cooling system for a marine engine conducts water from a coolant pump through the cylinder head and exhaust conduit prior to conducting the cooling water through the cylinder block. This raises...
6808433 Exhaust system located on one side of the hull of a personal watercraft  
An exhaust system for a personal watercraft that places components of the exhaust vehicle on one side of the watercraft, so that the exhaust system takes less space in the watercraft.
6802750 Exhaust system for watercraft  
The invention relates to an exhaust system for watercraft, having an exhaust pipe which leads from an engine system to an exhaust gas outlet, wherein a through-flow means for degrading the energy...
6769944 Exhaust and drain structure for vessels  
To effectively cool a water muffler. Exhaust gas from an engine is discharged through an exhaust pipe having a water jacket into a water muffler together with water passed through the water jacket....
6736687 Method for discharging waste gas from submarines without a signature  
The invention relates to a method and a device for discharging signature free exhaust gas from underwater vehicles, the exhaust gas being a by-product of the production of electric energy in energy...
6358109 Air cooled marine engine exhaust  
A marine propulsion device ( 12 ) including a sleeve ( 32 ) formed around an exhaust conduit ( 26 ) to form an air cooling passage ( 34 ) there between. Cooling air ( 38 ) is moved through the...
6200179 Diesel wet exhaust processing system  
A container for receiving wet exhaust from a deisel engine into an inlet pipe leading into the container. The inlet pipe has a closed bottom and slot in the side thereof intermediate the top and...
6186846 Exhaust passage structure for an outboard motor  
An exhaust passage structure for an outboard motor is provided to prevent exhaust emission interference from occurring while employing a simple construction and without increasing the engine size....
6152258 Exhaust system with silencing and water separation capability  
An exhaust system is provided with a structure that separates water from an exhaust stream and also attenuates the noise of the exhaust system. Water laden exhaust is directed from an inlet conduit...
6146222 Cooling device in outboard engine system  
In an outboard engine, a support member for supporting a drive shaft and an exhaust pipe within an extension case can be cooled by outside water pumped by utilizing the exhaust pressure from the...
6120335 Catalytic exhaust system for watercraft  
A personal watercraft includes a catalytic exhaust system in order to reduce discharge of pollutants. The exhaust system includes an exhaust passage and a catalyzer that is located within an...
6022254 Exhaust system for inboard/outboard marine propulsion system  
An exhaust system for inboard/outboard marine propulsion system. The exhaust system includes intermediate exhaust pipes which are physically separate components than the water separator. A sealed...
6010379 Exhaust gas system for ocean-going vessels, preferably for military purposes  
In an exhaust gas system for ocean-going vessels, preferably for military purposes, that are equipped with at least one internal combustion engine and at least one gas turbine, the exhaust gases...
5803036 Engine for outboard motor  
An outboard motor having an upper unit containing an internal combustion engine and a lower unit containing an exhaust guide is disclosed. The engine has a vertically oriented crankshaft having an...
5713768 Intake housing for personal watercraft  
A personal watercraft jet propulsion system has a hull design and an intake housing to optimize the structural integrity of the hull, and facilitate efficient installation of the jet propulsion...
5700172 Submerged marine exhaust system  
An improved marine engine exhaust device for discharging exhaust below the surface of the water in a submerged turbulent region generated by said device which is fixed to a the undersurface of the...
5671779 Exhaust pipe structure in outboard engine system  
An exhaust pipe for guiding an exhaust gas from an engine into an exhaust gas expansion chamber defined within an extension case is connected to a protrusion of an oil pan which is mounted on a...
5644914 Exhaust pressure pulsation control apparatus for a marine propulsion system  
An exhaust pressure pulsation control apparatus for a marine propulsion system has a front ring and a reflector disk located downstream of the front ring. There is a space between the front ring...
5463990 Outboard motor with four-stroke engine and exhaust gas discharge system therefor  
Disclosed herein is an outboard motor comprising a cylinder block including a lower horizontal drive shaft housing mounting surface, and a cylinder head mounting surface extending upwardly from the...
5441432 Boat propeller drive unit  
An outboard boat propeller drive unit with an anti-cavitation plate (6) above the propeller or propellers (4,5) has an exhaust duct (7) extending through the anti-cavitation plate. The exhaust duct...
5344349 Surfacing marine drive with contoured skeg  
A marine drive (10) has two counter-rotating surface operating propellers (12 and 14). The upper end (302) of the leading edge (288) of the skeg (194) is spaced forwardly of the lower end (310) of...
5212949 Exhaust gas cleaning system for a marine propulsion unit  
An exhaust gas cleaning system is provided for use with a watercraft engine. A plurality of horizontally positioned exhaust ports are located within an engine cylinder head. An exhaust manifold...
5149284 Exhaust system for an outboard motor  
This invention is adapted to be embodied in an outboard motor that is comprised of a power head having an internal combustion engine surrounded by a protective cowling. The engine includes an...
5078631 Marine exhaust system  
A marine exhaust system is provided for separating the gas from the water of gas/water mixture produced by a marine engine, and expelling the gas a sufficient distance from the hull of a boat to...
5035664 Marine propulsion device gear arrangement  
A marine propulsion device comprising a housing adapted to be mounted on the transom of a boat, a first gear rotatably supported by the housing and adapted to be drivingly connected to a propeller,...
5006085 Marine propulsion device with removable clutch assembly  
A marine propulsion device comprising a gear housing adapted to be mounted on the transom of a boat, a clutch assembly including a clutch housing, a shaft rotatably supported within the clutch...
4993979 Marine propulsion device  
A marine propulsion device comprising a gear housing adapted to be mounted on a transom of a boat, a first gear rotatably supported by the gear housing and adapted to be driven by an engine, a...
4959033 Marine propulsion device cover arrangement  
A stern drive unit comprising a metal upper gear housing which is adapted to be mounted on the transom of a boat for pivotal movement relative thereto about a generally vertical steering axis and...
4678442 Apparatus responsive to shortage of coolant in an engine of a boat  
This disclosure relates to a water craft or boat including an engine room for an engine. The room is closed except for an opening through which intake air moves into the room, whereby the engine is...
4504238 Fluid cooler for marine drives  
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...
4350010 Exhaust system for an outboard engine  
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...
4023353 Multi-flow marine jet-propulsion apparatus  
An outboard marine propulsion apparatus has a rotor unit axially displaceable between forward and reverse operating positions. In the forward position, concentric horizontal paths through the...
3776164 APPARATUS FOR FILLING AND, IF DESIRED, EMPTYING INERT GAS POOR IN OXYGEN INTO OR FROM HOLDS IN SHIPS, RESPECTIVELY  
Exhaust gases from an emergency or auxilliary gas turbine/generator set are passed to an afterburner in which the rather high oxygen content of said exhaust gases is reduced to an acceptable level...
3631671 EXHAUST SYSTEM FOR MARINE OUTDRIVE  
A marine outdrive unit is provided which includes an exhaust system in which there is proper cooling of the exhaust gases and in which an easy connection to the prime mover can be made....
3350879 Insulated outboard motor housing  
3262413 Motorized surfboard  
Matches 1 - 50 out of 55 1 2 >