691 results about "Marine engine" patented technology

A fuel cooling system for a marine inboard engine, including a fuel tank, a fuel supply conduit, and a heat exchanger. The fuel supply conduit includes first and second ends, and extends between the fuel tank and a fuel injection system for the engine. The heat exchanger is disposed intermediate the first and second ends of the fuel supply conduit, and includes a fuel passage in fluid communication with the fuel supply conduit, and a coolant passage in fluid communication with a coolant side of a closed-loop auxiliary cooling system.

Trunk piston marine engine lubrication, when the engine is fueled by heavy fuel oil, is effected by a composition comprising a major amount of an oil of lubricating viscosity containing at least 50 mass % of a basestock containing greater than or equal to 90% saturates and less than or equal to 0.03% sulphur or a mixture thereof, and respective minor amounts of an over-based metal hydrocarbyl-substituted hydroxybenzoate detergent other than such a detergent having a basicity index of less than two and a degree of carbonation of 80% or greater and at least 1 mass % of a hydrocarbyl-substituted carboxylic acid, anhydride, ester or amide thereof. Asphaltene precipitation in the lubricant, caused by the presence of contaminant heavy fuel oil, is prevented or inhibited.

A method and an equipment for reducing sulphur dioxide emissions of a marine engine, wherein flue gases are scrubbed with a scrubbing solution in a scrubber. Fresh water with added sulphur removal reagent is used as the scrubbing solution.

A cooling system for a marine engine having a turbocharger provides for the flow of coolant through heat emitting objects prior to flowing through a coolant jacket of the turbocharger itself. This avoids the potentially disadvantageous circumstance of directing cold water directly from a body of water through the cooling jacket of the turbocharger. Both open loop and closed loop versions of the invention are illustrated and described.

An engine is made by providing a layer of material between the outer surface of a cylinder liner and the inner surface of the cylinder opening within an engine block. The material can be a polymer or a ceramic. Polyether ether ketone or polyethylene terephthalate can be a polymer used for these purposes. Zirconia or yttria can be ceramic used for these purposes. An electro-deposited paint can serve as the layer of thermally insulative material.

The invention relates to an electromechanical compound transmission device of a tracked vehicle and belongs to the field of arrangement or installation of automobile transmission devices. The transmission device is composed of two motors, a planetary gear shift mechanism and a power coupling mechanism; when the tracked vehicle runs straight, the transmission device provided by the invention controls the two motors to be at the same speed; and when the tracked vehicle changes the direction, one part of overturning circulation power at the inner side is recycled as electric power and transmitted to the motor at the outer side by taking the motor at the inner side as a power generator, one part of the overturning circulation power is output to an outside tracked belt through a power coupling mechanism in a mechanical mode, and the power driving requirement of the motor at the outer side is reduced. Through the transmission device provided by the invention, the high requirements for the motors by a double-side motor individual driving type are reduced, the system power waste for the horizontal-axis zero speed difference electromechanical compound driving type is avoided, the overturning system with double-flow transmission for the traditional tracked belt is saved, thus the system efficiency is utilized fully, the device has the advantages of flexible arrangement, small general size and the like, and the device is extremely suitable for high-power tracked vehicles.

The invention relates to a three-way NOx, CO and HC removing catalyst used in a marine engine, and a preparation method thereof. The catalyst takes cerium-tin-tungsten composite oxide as an active component, takes one or more oxides of cobalt, ferrum, nickel, copper, lanthanum, molybdenum, manganese, zirconium, silver and yttrium as a promoter, and takes AlSiTi composite oxide as a carrier. A saturated active component solution, a saturated cobalt promoter ionic solution, strong acid alumina gel, diaspore, clayey, titanium dioxide and an organic forming agent are stirred uniformly, mixed, aged and extruded for formation, and the integral type catalyst is obtained through drying and roasting. According to the invention, the catalyst has high NOx removing efficiency, the active temperature window is wide, and the CO and HC removing efficiency is high in a low-temperature collaborated catalyzing manner. According to the catalyst, as the components of the catalyst are nontoxic and environmental-friendly, the catalyst has the advantages that the mechanical strength is high, the vibration resistance as well as the heat resistance is excellent, the preparation technology is simple, and the cost is low. The three-way NOx, CO and HC removing catalyst is applicable to treatment of NOx, CO and HC in tail gas of a marine diesel engine, and is also applicable to treatment to tail gas of other moving sources diesel engines such as automobiles.

90° V12 reciprocating, EFI/DIS fueled/fired, IC engines having a PCM controller operating the engine in an Even Fire ignition mode, in a novel fueling and firing sequence called Progressive Single/Pair (PS/P) firing, wherein the cylinders of each of a set of four pairs of internal cylinders are simultaneously fueled and fired in parallel to produce a pump-gas fueled power curve greatly improved over V6 and V8 engines. The inherent imbalance-induced transitory vibration in IFR RPM is compensated-for by fuel feed control, namely, leaning one cylinder of each pair-fired cylinder pair. The inventive 90° V12 retro-fits into the engine compartment of conventional vehicles and can use any liquid or gaseous fuel. The inventive 90° V12 has use in the exemplary fields of: automotive engines; heavy military and industrial equipment and vehicle engines; marine engines; aircraft engines; and stationary power sources; in both 2-cycle and 4-cycle modes, and in normally aspirated, super-charged and turbo-charged configurations.

The present invention relates to a cylinder lubricant having a BN determined according to standard ASTM D-2896 greater than or equal to 15, preferably greater than 20, preferably greater than 30, advantageously greater than 40 milligrams of potash per gram of lubricant, comprising:

• • one or more lubricating base oils for marine engines,
  • at least one detergent based on alkali or alkaline-earth metals, overbased with metallic carbonate salts, optionally in combination with one or more neutral detergents,
  • one or more fatty amines and/or derivatives of oil-soluble fatty amines having a BN determined according to standard ASTM D-2896 comprised between 150 and 600 milligrams of potash per gram, preferably comprised between 200 and 500 milligrams of potash per gram.

This lubricant has sufficient neutralization power vis-à-vis the sulphuric acid formed during the combustion of high-sulphur fuel oils, whilst limiting the formation of deposits during the use of low-sulphur fuel oils.

The invention discloses a small temperature-rise low-entropy mixing combustion engine which comprises a combustion chamber, an expanding agent source and a fuel source, wherein the combustion chamber is arranged as a piston engine combustion chamber and a marine engine combustion chamber; the fuel source is communicated with the combustion chamber through a fuel lead-in control mechanism; the expanding agent source is communicated with the combustion chamber through an expanding agent lead-in control mechanism; and more than 5% of the heat generated by the combustion of the fuel in the fuel source entering the combustion chamber is absorbed by the expanding agent in the expanding agent source in the combustion chamber by virtue of the control of a combustion control device for the fuel lead-in control mechanism and the expanding agent lead-in control mechanism. The small temperature-rise low-entropy mixing combustion engine disclosed by the invention has the advantages of high efficiency and good environmental friendliness.

A connecting flange comprises a generally open ended cylindrical body having an inlet adapted for receiving a gasket for providing a sealing connection with a turbocharger housing, and an outlet for connection to marine exhaust conduit. The connector inlet terminates in an end having a radially flared angularly disposed end wall adapted for mating abutting engagement with a correspondingly angled turbocharger housing end wall. The connector inlet end further includes circumferential axially recessed groove that receives spiral wound gasket in a configuration wherein the gasket forms redundant seals at a plurality of locations. The connector inlet structure cooperates with the turbo charger outlet structure to completely enclose the gasket thereby protecting the gasket from hot corrosive exhaust gases. A V-Band clamp is disposed in covering relation with the connector end wall and abutting turbocharger housing component to secure the connector to the turbocharger.

A marine propulsion drive-by-wire control system controls multiple marine engines, each one or more PCMs, propulsion control modules for controlling engine functions which may include steering or vessel vectoring. A helm has multiple ECUs, electronic control units, for controlling the multiple marine engines. A CAN, controller area network, bus connects the ECUs and PCMs with multiple PCM and ECU buses. The ECU buses are connected through respective isolation circuits isolating the respective ECU bus from spurious signals in another ECU bus.

In one aspect of the present invention, a marine system oil composition is provided for lubrication of mechanical components in marine engines, for example, two-stroke, cross-head marine diesel engines and methods/additives for using the marine system oil composition in the same. In one aspect of the present invention, a marine system oil composition is provided that has salt of a carboxylate-containing detergent comprising at least one alkyl-substituted hydroxyaromatic carboxylic acid, wherein at least 50 mole % of, the alkyl groups are C₂₀ or greater.

A vibrational damper reduces torsional vibration within a crankshaft of a marine engine. The vibrational damper is located on an end of the crankshaft opposite of the flywheel and includes an inertia ring that adds additional mass to this opposite end. In addition, the vibrational damper includes an elastic member that suspends the inertia ring about the crankshaft. The elastic member effectively dampens torsional vibrations. The torsional damper desirably is cooled by an air flow so as to maintain it's dampening efficiency. A ventilation duct, which is positioned directly above the vibrational damper, supplies the cooling air. Cooling is enhanced by locating a bilge system inlet below and slightly behind the vibrational damper. An air flow stream occurs between the duct and the bilge inlet and across the torsional damper to cool the torsional damper.

The invention relates to an automatic temperature-control variable flow type central cooling system for a ship, comprising a fresh water cooling pipeline and a seawater cooling pipeline, wherein the fresh water cooling pipeline comprises a low-temperature fresh water cooling pump, a device needing to be cooled and a central cooler which constitute a closed circulation pipeline; the seawater cooling pipeline comprises an open circulation pipeline consisting of a seawater cooling pump and a central cooler; and circulating fresh water flowing through the central cooler is cooled by sea water. The central cooling system is characterized in that the seawater cooling pump is connected with an automatic control unit which can control the seawater flow according to the cooling quantity of the device needing to be cooled. Through the automatic temperature-control variable flow type central cooling system for the ship, under the working condition of non-full load operation of a marine engine system of the ship, the underdeck system energy consumption and the exhaust gas discharge are effectively decreased, the operating cost of the ship is reduced and the concept of environmental friendliness is realized in the meantime.

A system and method for operating a combustion engine including a combustion chamber operable in at least a first operating mode and second operating mode. An engine control unit (ECU) performs conductivity sensing within the combustion chamber and interprets the results. Specifically, the ECU determines the current between a pair of spark plug electrodes placed within a combustion chamber of a combustion engine prior to, or after, combustion. The ECU determines whether the current between the pair of electrodes is indicative of spark plug fouling. If spark plug fouling is determined, the ECU can modify the mode of operation to correct the spark plug fouling and clean the deposits on the spark plug while the engine is in operation and without operation intervention.

Trunk piston marine engine lubrication, when the engine is fueled by heavy fuel oil, is effected by a composition comprising a major amount of an oil of lubricating viscosity and a minor amount of one or more phenolic compounds comprising distilled cashew nut shell liquid or hydrogenated distilled cashew nut shell liquid. Asphaltene precipitation in the lubricant, caused by the presence of contaminant heavy fuel oil, is prevented or inhibited.

An attachment and support system is provided for supporting a flame arrestor and cover at a preselected position relative to a throttle body which, in turn, is attached to an air intake manifold. A support member is attached, by four bolts, to the air intake manifold. The four bolts, or alternative attachment components, simultaneously attach the throttle body to the air intake manifold and the support member to the throttle body. Both the flame arrestor and cover are attached, by a stud, to the support member.