Abstract: Methods for making an apparatus comprising a cylinder for an engine having at least one combustion chamber and a squish area disposed at or around a base of the at least one combustion chamber, wherein the at least one combustion chamber comprises a paraboloidal cavity.

Abstract: The present invention relates to a heat exchanger apparatus for a combustion engine. The apparatus comprises a heat exchanger comprising at least one magnetic component; and an induction heater positioned adjacent at least one magnetic component of the heat exchanger. The induction heater is connectable to a power supply to provide inductive heating to the heat exchanger.

Abstract: A valve seat insert includes a top convex arcuate blend for improving fluid flow, and a valve seating surface for slowing down valve recession. The valve seating surface includes a radially outer convex arcuate segment defining an outer radius of curvature forming a first wear crown for contacting the valve at an early wear state, a radially inner convex arcuate segment defining an inner radius of curvature forming a second wear crown for contacting the valve at a later wear state, and a linear segment extending between the radially outer convex arcuate segment and the radially inner convex arcuate segment.

Abstract: An intake manifold includes a surge tank, an inlet pipe, and intake pipes. The surge tank includes a curved portion and a bulging portion. The curved portion forms a curved outer wall of the surge tank and includes an inner surface that is continuous with inner surfaces of entrances of the intake pipes. The bulging portion bulges into the surge tank toward the curved portion and overlaps with an imaginary extension of an exit of the inlet pipe into the surge tank. The bulging portion includes a flow changing portion. The flow changing portion is configured to direct a flow of intake air toward a section that is more interior into the surge tank than the bulging portion in relation to the inlet pipe and located on part of the inner surface of the surge tank that is continuous with the inner surface of the curved portion.

Abstract: A vehicular internal combustion engine is equipped with a supercharger, a drain pipe for draining lubricating oil in the supercharger, a cylinder block including a first oil passage, and a PCV separator including a second oil passage connected to an outlet of the drain pipe and an inlet of the first oil passage.

Abstract: A water ingestion control system for an internal combustion engine can include a snorkel, at least one closure structure, a choking valve, and a controller. The snorkel can include an air intake opening and at least one evacuation inlet that can be selectively opened and closed by the closure structure. The choking valve can be located between the air intake opening and an air box and selectively open and close fluid communication between the snorkel and the air box. When in a closed state, the choking valve can close fluid communication between the snorkel and the air box and prevents fluid in the snorkel from flowing into the air box and the engine. The controller can be configured to place the choking valve in the closed state when the controller receives data indicative of the presence of water in the snorkel.

Abstract: A piston arrangement for a clean combustion engine, such as a hydrogen engine. The piston arrangement comprises a piston configured for reciprocal movement inside a cylinder having a cylinder wall, the piston having a piston head configured to face a first compartment with pressurized gas, a sealing arrangement comprising at least one sealing ring configured to be arranged to seal the piston to the cylinder wall and separating the first compartment from a second compartment, and a water channel extending from an interior of the piston to the sealing ring to provide water for lubricating the sealing ring. The piston head comprises a pumping element configured to be arranged to pressurize the water in the water channel by pressurised gas in the first compartment.

Abstract: The present disclosure is directed towards an engine assembly comprising a crankcase, a crankshaft, a lubrication system and fluid guide arrangement. During rotation the crankshaft is configured to drive a crankcase fluid flow in a crankcase chamber. The lubrication system comprises a lubricant drain for a drain fluid flow therethrough extending to a drain aperture at the crankcase chamber. The fluid guide arrangement is located adjacent or in proximity to the drain aperture. The fluid guide arrangement is configured for guiding crankcase fluid flow away from the drain aperture and/or for reducing the pressure of the crankcase fluid flow past the drain aperture, such that drain fluid flows from the lubricant drain.

Abstract: An intake manifold with a blow off/pressure release valve, wherein the intake manifold may be a unitary construction of aluminum. The intake manifold utilizes a flat gasket at engine interface that, in combination with the aluminum construction, reduces the amount of heat transferred from the cylinder head to the intake manifold. The unitary construction of aluminum provides a strong bridge and conduit between the cylinder head and the carburetor.

Abstract: This blow-by gas discharge device is provided with: blow-by gas piping 23 which is extended from the height position of the upper end of an internal combustion engine 1 to the height position of the lower end, is exposed to the outside air, and has an outlet 33 open to the atmosphere; and a heating chamber 24 which is provided between the ends of the blow-by gas piping, is formed in the flywheel housing 10 of the internal combustion engine, and heats blow-by gas.

Abstract: A housing for a drive system. The housing defines a motor cavity, an electronics cold plate, an oil cavity, and a coolant cavity. The coolant cavity defines a first coolant flow path configured to provide cooling to the motor cavity and the oil cavity. The coolant cavity defines a second flow path configured to provide cooling to the motor cavity and the cold plate. The housing defines a coolant inlet and a coolant outlet fluidically coupled to the first coolant flow path and the second coolant flow path, such that the first coolant flow path and the second coolant flow path are parallel fluid paths. In some applications the coolant paths can be connected in series. In some examples, the housing is configured to cause a counter-flow heat exchange between an oil flowing in the oil cavity and a coolant flowing in the first coolant flow path.

Abstract: An outboard motor includes an engine, a first cooling water passage to cool a first cooling target including the engine and through which first cooling water including water from outside an outboard motor body passes, a first pump to pump the first cooling water from outside the outboard motor body to the first cooling water passage, a second cooling water passage to cool a second cooling target different from the first cooling target and through which second cooling water different from the first cooling water passes, and a second pump to pump the second cooling water to the second cooling water passage.

Abstract: There is provided a nozzle for a fan assembly. The nozzle comprises a nozzle body, an air inlet for receiving an air flow, and one or more air outlets for emitting the air flow. The nozzle body has the general shape of a truncated ellipsoid, with a first truncation forming a face of the nozzle body and a second truncation forming a base of the nozzle body. The one or more air outlets are provided on the face of the nozzle body. Preferably, the air inlet is provided at the base of the nozzle body.

Abstract: An example compressor includes a casing having a main portion and an outer skirt collectively defining an annular plenum, an outlet guide vane coupled to the main portion, an actuator mounted outside the outer skirt, and a linkage coupled to the actuator and the outlet guide vane through the annular plenum.

Abstract: Apparatus for providing a source of compressed air for an engine having an engine cylinder and an engine crank shaft, includes a rotatable compressor crank shaft, a compressor cylinder defining an interior space and including a surface defining the interior space having first and second apertures, a valve in each aperture, a piston compressor moved upon rotation of the compressor crank shaft in the interior space of the compressor cylinder, a compressor intake conduit leading from ambient environment to one aperture, and an air tank. The apparatus also includes a compressor outlet conduit leading from the other aperture to the air tank, an engine intake conduit leading from the air tank to an interior space of the engine cylinder, and interconnection structure that interconnects the compressor crank shaft to the engine crank shaft such that rotation of the engine crank shaft causes rotation of the compressor crank shaft.

Abstract: Systems, methods and apparatus for controlling operation of dual fuel engines are disclosed that regulate the fueling amounts provided by a first fuel and a second fuel during operation of the engine. The first fuel can be a liquid fuel and the second fuel can be a gaseous fuel. The fueling amounts are controlled to improve operational outcomes of the duel fuel engine.

Abstract: A carburetor has a carburetor body wherein an intake channel is formed. A throttle flap is pivotably mounted by a throttle shaft in the carburetor body for controlling the free flow cross-section of the intake channel. The intake channel has a first longitudinal center axis in the region of the throttle shaft. The throttle flap has first and second end positions, wherein the throttle flap opens a larger flow cross-section of the intake channel in the second end position than in the first end position. A partition wall section, on which the throttle flap lies in the second end position, is arranged upstream of the throttle shaft. A choke flap is upstream of the partition wall section and is pivotable between first and second end positions. In their second end positions, the throttle flap and the choke flap overlap in the direction of the first longitudinal center axis.

Abstract: A combination cooling/filtration device is for cooling and filtering lubricant in an outboard motor. The device includes a body; a lubricant cooler configured to cool the lubricant, the lubricant cooler having an inlet port that receives cooling fluid and an outlet port that discharges the cooling fluid; a filter configured to filter the lubricant; and a lubricant passage extending through the body. The lubricant passage is configured to convey the lubricant from upstream to downstream, and in particular to the lubricant cooler, then to the filter, and then to an engine of the outboard motor. The body is axially elongated from top to bottom, the filter is mounted on the top of the body, and the lubricant cooler is located in the body below the filter.

Abstract: This disclosure generally relates to an oil mitigation system and method for lubricating the piston(s) for electronic fuel injected internal combustion engines, incorporating cylinder deactivation technology. This concept leverages the engine's base fuel injection pulse width table, determines the fuel injection “shutoff” state and, reduces the oiling to counter the reverse oil flow effect within the cylinder wall, past the ring set to the cylinder combustion chamber. This disclosure further comprises a system and method for mitigating oil consumption to all active cylinders, for accommodating all ranges of engine loading.

Abstract: A centrifugal blower includes: a centrifugal fan having plural blades arranged around a fan axis and a separation plate to blow out air in a radial direction after being sucked from one side in an axial direction; a fan casing housing the centrifugal fan; a partition plate that defines a first air passage and a second air passage arranged on the other side of the first air passage in the axial direction; and a separation cylinder arranged inside the plural blades in the radial direction. The separation cylinder expands in the radial direction as extending toward the other side in the axial direction, and is shaped to extend outward in the radial direction obliquely to the axial direction at the other end position of the separation cylinder positioned at the other end in the axial direction.