A cylinder head assembly for an internal combustion engine includes a cast cylinder head and a turbocharger housing integrally cast with the cylinder head and having an integrally cast wastegate housing. The turbocharger housing is configured to receive a turbocharger cartridge rotatably supporting a shaft coupled between a compressor wheel and a turbine wheel. The integrally cast wastegate housing defines a wastegate chamber configured to receive a wastegate valve, a flow of exhaust gas from the turbine wheel, and a flow of wastegate exhaust gas.

A downhole power generation includes a power generation module for providing power to a load. A turbine is driven by flow of a downhole fluid to rotate. A generator is coupled with the turbine for converting rotational energy from the turbine to electrical energy, and an AC-DC rectifier is coupled with the generator for converting an alternating voltage from the generator to a direct voltage. A power conversion circuit couples the AC-DC rectifier with the load. The power conversion circuit is configured for providing a first power to the load when the load is in a working mode and providing a second power to the load when the load is in a non-working mode. The second power is less than the first power. A downhole power generation method is also disclosed.

An arrangement of exchangers for marinization of a marine engine, including an engine block with in-line cylinders or cylinders in a V, cooled by a cooling fluid, at least one turbocompressor with a hot chamber connected to an outlet and a cold chamber connected to the cylinders of the engine block, a reverser including a housing and containing oil, wherein the arrangement includes: a radiator hose for supplying cooling water, a turbocompressor exchanger, an engine exchanger, a reverser exchanger, a radiator hose for discharging cooling water toward an outlet of combustion gases, downstream from the hot chamber of the at least one turbocompressor,
with these three exchangers being placed in this order and inserted in the circulation direction of the water between the radiator hose for supplying the cooling water and the radiator hose for discharging this same cooling water.

A method for diagnosing a part of a powertrain system is provided. The powertrain system comprising an internal combustion engine system having an internal combustion engine provided with a plurality of cylinders, each cylinder being provided with an air inlet valve and an exhaust gas valve, the method comprising the steps of operating any one of the inlet valve and the exhaust valve for any one of the cylinders to adjust the frequency and/or duration of air pulses during different load conditions of the internal combustion engine; determining an operational behaviour of the part of the powertrain system in response to the adjusted frequency and/or duration of the air pulses; and comparing the determined operational behaviour of the part of the powertrain system with an expected behaviour of the part of the powertrain system.

A pre-chamber spark plug for a combustion chamber of a combustion engine includes a pre-chamber which has a plurality of openings and an electrode device which is disposed in the pre-chamber. An ignition spark for igniting a fuel-air mixture introduced into the pre-chamber is generatable at a spark location in the pre-chamber by the electrode device. The pre-chamber spark plug is configured to bring about a tumble-shaped flow of fuel-air mixture flowing into the pre-chamber via the plurality of openings. The tumble-shaped flow has, in a first region of the pre-chamber, a first flow part pointing upward away from the plurality of openings, and, in a second region of the pre-chamber, a second flow part adjoining the first flow part and pointing downward in a direction of the plurality of openings. The spark location is disposed at least in part in the second region.

The present invention relates to a heat exchanger (1) comprising at least one heat exchange bundle (2), a box (4, 6) and a collector (8), the box (4, 6) being arranged at one end (24, 26) of the heat exchange bundle (2), the heat exchange bundle (2) comprising at least one peripheral wall (10) which delimits a housing (18) in which a plurality of tubes (12) extend, inside which tubes a first fluid circulates and around which a second fluid circulates, at least one opening (30) being provided in the peripheral wall (10) and a collector (8) comprising a peripheral edge (40) being arranged so as to cover the opening (30).

A hydrogen internal combustion engine system includes a combustion chamber connected to a hydrogen intake system, an air intake system and a water intake system for controlling hydrogen combustion, characterized in that the water injection system comprises an exhaust gas collector connected to an exhaust water condenser configured to condense at least a part of water contained in the exhaust gases.

A device for the aftertreatment of exhaust gases from an internal combustion engine has a tubular first flow section, a deflecting region and a annular second flow section, the second flow section being arranged between an inner wall delimiting the first flow section and an outer wall delimiting the second flow section. At least one annular honeycomb body is arranged in the second flow section, and at least one annular heating disk is arranged in the second flow section, the heating disk being electrically contactable by at least two electrical feedthroughs, which are arranged on the outer wall.

A pre-chamber spark plug for a combustion chamber of an internal combustion engine includes a pre-chamber which has a plurality of openings. A fuel-air mixture is introducible from the combustion chamber into the pre-chamber via the plurality of openings. With respect to an imaginary plane running in a longitudinal extension direction of the pre-chamber and dividing the pre-chamber into a first half and a second half of equal size, first openings are disposed in the first half and second openings are disposed in the second half. The first openings enclose a respective first angle with the imaginary plane, the second openings enclose a respective second angle with the imaginary plane, and a mean value of the first angles is greater than a mean value of the second angles. The plurality of openings are configured rotationally asymmetrically about an imaginary axis running on the imaginary plane.

A pre-chamber spark plug includes a shell extending along a longitudinal axis and comprising an inner surface. The pre-chamber spark plug further includes an insulator including an outer surface. The pre-chamber spark plug further includes a pre-chamber cap connected to the shell. The pre-chamber cap and the shell together forms a pre-chamber. The pre-chamber spark plug further includes an annular reservoir defined between the outer surface of the insulator and the inner surface of the shell. The annular reservoir is spaced apart from the pre-chamber with respect to the longitudinal axis. The pre-chamber spark plug further includes a plurality of projections disposed between the annular reservoir and the pre-chamber with respect to the longitudinal axis. The plurality of projections at least partially define a plurality of flow passages therebetween.