Abstract: An incineration furnace for disposal of waste in which substantially complete burning of waste materials is obtained. A stirring member is rotatably supported in the interior of an incinerator housing, making up the main incineration furnace body. Air for accelerating burning of the waste material is forcibly fed from a blower through the stirring member. The stirring member is rotated and driven through the inside of the housing by a motor. Waste is agitated and mixed between movable tubes provided on the stirring member, and by first and second fixed blades disposed in the incinerator housing, thereby facilitating burning and incineration of the waste material.

Abstract: Several embodiments of internal combustion engines for use in outboard motors that permits a compact construction. This is achieved by having the intake ports of the cylinder head have a U-shaped configuration and positioning the induction system on the side of the engine with the charge former extending into a recess formed by the cylinder block above the crankcase. Intake pipes extend along the side of the crankcase and are served by a plenum chamber that is spaced from the crankcase. Both V and in-line engines are disclosed.

Abstract: Bottom ash is taken out of an incinerator after undergoing a moistening process and is subjected to a drying process to reduce its water content to less than 10 weight % or it is taken out of the incinerator with water content less than 10 weight %. Fly ash is taken out of the discharge gas processing system of the incinerator without going through a moistening process. The bottom ash and fly ash, thus taken out, are separately weighed and discharged to a same transporting device and are transported to a melting furnace while being mixed together.

Abstract: An air intake manifold assembly (20) includes an intake manifold housing (22), made of a light weight material, and a pressure relief disk (38). The pressure relief disk (38) is mounted over a relief disk hole (26) in the housing (22). The pressure relief disk (38) engages the housing (22) to form a seal during normal engine operation. Should the manifold assembly (20) experience an induction backfire, pressure relief disk (38) includes a feature (52) that will rupture at a predetermined positive pressure, thus allowing for escape of the air while minimizing the potential for damage to the housing (22) and other components on the engine that are near to the intake manifold assembly (20).

Abstract: The present invention relates to a process for treating a combustion reactant, such as fuel, for providing an efficient combustion of the reactant. The process includes applying an electrically polarizable material to a surface of a part of a fuel system for a combustion engine. Further, the process includes electrically polarizing the material applied on the surface for causing the material to become an electrically polarized electret. The process further includes contacting at least one reactant with the electrically polarized electret material prior to combustion of the reactant.

Abstract: An engine structure and mechanism that operates on various combustion processes in a two-stroke-cycle without supplemental cooling or lubrication comprises an axial assembly of cylindrical modules and twin, double-harmonic cams that operate with opposed pistons in each cylinder through fully captured rolling contact bearings. The opposed pistons are double-acting, performing a two-stroke engine power cycle on facing ends and induction and scavenge air compression on their outside ends, all within the same cylinder bore. The engine includes a control system which utilizes twin barrel cams with adjustable axial and angular positions enabling independent compression ratio and port phasing variation during operation. The engine control system comprises one or more electrohydraulic servos to set and maintain the axial and angular relationships of the cams either at extreme positions or controlled to particular positions and schedules thereof utilizing instantaneous piston position feedback information.

Abstract: A piston for an internal combustion engine comprises a wear resisting annulus made of aluminum alloy containing SiC particulates, the wear resisting annulus being cast within a top ring groove upon casting of a piston made of aluminum alloy.

Abstract: An air intake manifold comprises a manifold body having a plenum formed with a convexly-curved floor, opposed sidewalls and a radiused inlet which collectively define a plenum interior. A number of air passageways or runners each have an inlet at the plenum interior and an outlet connected to one cylinder of the internal combustion engine where a fuel injector is mounted to combine atomized fuel with the flow of air through such runners. An air guide extends outwardly from the plenum floor in a generally convexly arcuate shape which is effective to smoothly direct the flow of air entering the plenum interior into each of the runners so that turbulence within the runners is substantially reduced thus allowing a maximum amount of air to flow into the cylinders of the engine at both low engine speeds and high engine speeds.

Abstract: A two-stroke engine of crankcase scavenged type includes a piston reciprocably mounted in a cylinder, an exhaust port, an inlet port arranged to supply combustion air to the crankcase and a transfer port comprising two or more transfer passages extending between the crankcase and the cylinder. The transfer port is arranged to open before the exhaust port closes whereby, in use, the cylinder is scavenged. Fuel metering means communicates with at least one but not all of the transfer passages and is arranged to supply fuel into the said transfer passage at a rate which is directly determined by the mass flow rate of air through the inlet port. The fuel metering means includes a metering valve connected to actuating means, which is arranged to modulate the valve in response to the mass flow rate of air through the inlet port and fuel supply means arranged to supply pressurised fuel continuously to the metering valve.

Abstract: A cast iron cylinder block for an internal combustion engine having a crankcase which defines a region for crankshaft bearings. The cylinder block includes: at least two contiguous cylinders having a dividing plane therebetween; a support web interposed between the cylinders and the crankcase for supporting the cylinders on an upper part of the crankcase, the support web including a bore for fastening screws of a seating for a crankshaft bearing; and a cooling jacket surrounding the at least two contiguous cylinders and including on each side of the two contiguous cylinders, in the dividing plane, at least one reinforcing rib having upper and lower ends and a U-shaped cross-section which defines an inner U-profile extending, at the upper end of the reinforcing rib, into an extension defining a bore for a cylinder head stud screw and extending, at the lower end of the reinforcing rib, into an extension of the bore in the support web.

Abstract: An improved crankcase pressure regulation system for an internal combustion engine has a floating-disk type vacuum pressure regulator operatively connected to a breather tube for blowby gases upstream of a flow restriction such as an oil separator. The breather tube has an inlet that receives crankcase blowby gases from a breather port in the crankcase and an outlet that feeds blowby gases into an air intake housing where the blowby gases are mixed with filtered engine intake air. The blowby gases are recirculated into the engine for combustion. The floating-disk type vacuum regulator has an air filter to filter ambient air that is added to the blowby gases and later recirculated into the engine air intake for combustion.

Abstract: Improved grate plates are designed to produce multiple eddy currents in the absence of clinker and to provide even greater air distribution when overlaid by clinker. Each grate plate has a plurality of upwardly flaring wells which open to the upper surface on which the clinker bed is supported. Within each well is at least one semi-annular slot providing ingress for cooling air from a remote source. The slot extends only partially around the wall of the well such that air is injected into the well somewhat tangentially to the flaring surface to induce cyclonic motion of the air which is enhanced by the flared conic walls of the wells. Accordingly, the energy imparted the air by injection is diminished by the rotational energy dissipated and the cooling air's initial vertical component of velocity is diminished.

Abstract: Crankcase ventilation systems for internal combustion engines generally utilize external lines which increase the complexity of the engine while decreasing the engine's flexibility. Additionally, systems which utilize internal methods for ventilating the blow-by gas leaking past the piston rings generally do not properly ventilate the crankcase. The present invention overcomes these problems by providing crankcase ventilation system which utilizes a simplified design for an internal combustion engine with hydraulically actuated valves. A passage is disposed within the engine for fluid communication between a crankcase and a combustion chamber. A valve means is disposed within the passage for controlling the communication therebetween.

Abstract: An intake pipe system for a multicylinder internal combustion engine, in particular one with two cylinder banks arranged to form a V, has a tubular intake distributor 2 from which extends a first set of individual intake pipes 4 to 9 which extend through an arc around the intake distributor and lead to the individual cylinders of the two cylinder banks. A second set of shorter individual intake pipes also extend from the intake distributor and discharge into the associated individual intake pipes. The intake distributor and the first and second sets of individual intake pipes are made up of an integral casting 1 having a longitudinal bore 16 intersecting the second set of individual intake pipes. There is introduced into each longitudinal bore 16 a casing having openings 17 aligned with the second set of individual intake pipes, in which bore a pivoting valve 14 is mounted on a common shaft 20 which is embedded in the casing 15.

Abstract: The invention in a snow mobile engine head is formed, as by milling methods, from an aluminum billet and includes spaced bolt bosses extending at spaced intervals from around the head perimeter, each of which bolt bosses includes a hole formed therethrough to receive a bolt that is turned into an engine block, mounting the head. The head includes a firing chamber formed therein in opposition to a piston chamber formed in the engine block, for containing a piston having a crown top surface with a junction of an outer edge of the firing chamber and an edge of an inner wall of a head squish band radiused to provide a curved surface thereat that will encourage a circular flow of an air fuel mixture towards the head firing chamber center to provide for improved exhaust gas acceleration away from the piston outer perimeter, aiding in the eliminate detonation.

Abstract: An air intake system has two resonance chambers coupled together by connecting pipes. The resonance chambers are connected to the cylinders by individual intake pipes. A further common chamber is coupled by means of resonance pipes to the resonance chamber. The connecting pipe and several of the resonance pipes have controllable blocking elements. A branch that supplies air to the system is connected with one of the connecting pipes and the further chamber. To deliberately increase the mean pressure, the blocking elements can be connected in cascade fashion as the rpm rises, causing the coupled volume to increase.

Abstract: A ventilation system is provided for an engine crankcase of a marine outboard motor to distribute blow-by gas generally equally to each cylinder while minimizing the size of an intake silencer of the system. The intake silencer includes a first expansion chamber into which the blow-by gas is introduced from a blow-by gas camber attached to the cylinder head. The blow-by gas diffuses and mixes with ambient air which is drawn into the first expansion chamber through an inlet port of the induction system. The air/blow-by gas mixture is then drawn into a second expansion chamber where it distributes generally evenly before induction into a charge forming device.

Abstract: A piston for an internal combustion engine includes a skirt portion configured so that a value S/(D * L) is in the range of 0.4-0.55, where L is a length of the skirt portion, D is a diameter of a cylinder bore, and S is an area of an image of the skirt portion when the skirt portion is projected onto a plane perpendicular to a direction connecting a pair of boss portions. This condition decreases the friction between the piston and the cylinder bore.

Abstract: In a combustion device, a boiler is provided with a water tube nest in which combustion, flame holding, fuel-air mixing, and heat absorption are carried out by each water tube in a tube nest. The arrangement of this combustion device enables elimination of the conventional burner and furnace. Fuel supply devices are provided upstream of the water tube nest to supply fuel or a fuel-air mixture. One or several combustion catalysts are provided across the gas flow direction in the boiler to promote combustion. In one arrangement, the fuel supply devices are fuel supply tubes, and fuel or fuel and air are supplied to the fuel supply tubes and spouted from fuel injection nozzles thereof. The fuel supply tubes and water tubes are arranged such that the row of fuel supply tubes is spaced upstream from the first water tube row, such that L.gtoreq.3D where L is the pitch between the fuel supply tube row and the first water tube row, and D is the diameter of the water tubes. Also, P .gtoreq.

Abstract: An air intake heating and diagnostic system for an internal combustion engine includes a microprocessor based controller for activating electrical heating elements for a preheat time period prior to starting the engine and for a postheat time period after starting the engine. The controller receives inputs corresponding to intake manifold air temperature, battery temperature, vehicle speed, engine speed, and key switch position. The system continuously monitors the integrity of the various sensors, monitors the functionality of the heating elements during the postheat time period, and warns the vehicle operator by illuminating a "check engine" lamp if certain fault conditions are detected. In both cases, the controller sets fault flags within the controller memory corresponding to the detected fault conditions.