Abstract: A method includes initializing an estimated fuel property associated with a fuel of an engine system. The method also includes determining an estimated quantity associated with operation of the engine based on a model. The method also includes receiving a signal indicative of a measured quantity corresponding to the estimated quantity. The method also includes determining the measured quantity based on the received signal. The method also includes determining a residual based on the estimated quantity and the measured quantity. The method also includes updating the estimated fuel property based on the residual. The method also includes controlling one or more operational parameters of the engine based on the update of the estimated fuel property.

Abstract: A combustion engine for combustion of an air-fuel mixture containing air and fuel, comprising at least one temperature adjusting means for cooling or heating the air, fuel, and/or air-fuel mixture and a control unit configured to determine the methane number and/or hydrogen content of the fuel and/or air-fuel mixture, wherein the control unit is configured to control a temperature of the air, fuel and/or air-fuel mixture based on the determined methane number and/or hydrogen content by controlling the at least one temperature adjusting means.

Abstract: A combustion engine for combustion of an air-fuel mixture containing air and fuel, comprising at least one temperature adjusting means for cooling or heating the air, fuel, and/or air-fuel mixture and a control unit configured to determine the methane number and/or hydrogen content of the fuel and/or air-fuel mixture, wherein the control unit is configured to control a temperature of the air, fuel and/or air-fuel mixture based on the determined methane number and/or hydrogen content by controlling the at least one temperature adjusting means.

Abstract: An internal combustion engine comprising: a main combustion chamber comprising at least one intake valve and at least one exhaust valve, wherein at least one intake port fluidically connected to an intake manifold is configured to supply an air and/or an air-fuel-mixture to the main combustion chamber via the at least one intake valve, and a pre-chamber which is in fluid connection with the main combustion chamber, wherein the pre-chamber is in fluid connection with the intake port and/or the intake manifold through a supply line, wherein at least one fuel injector is configured to enrich the air and/or air-fuel-mixture supplied to the main combustion chamber to have a lower ignition delay than an air-fuel-mixture supplied to the pre-chamber and/or air or air-fuel-mixture can be supplied to the pre-chamber to have a higher ignition delay than an air-fuel-mixture supplied to the main combustion chamber.

Abstract: A combustion engine for combustion of an air-fuel mixture containing air and fuel, comprising at least one temperature adjusting means for cooling or heating the air, fuel, and/or air-fuel mixture and a control unit configured to determine the methane number and/or hydrogen content of the fuel and/or air-fuel mixture, wherein the control unit is configured to control a temperature of the air, fuel and/or air-fuel mixture based on the determined methane number and/or hydrogen content by controlling the at least one temperature adjusting means.

Abstract: An internal combustion engine includes transfer passages between a pre-chamber and a main combustion chamber, and a control unit configured to control a pre-chamber supply system coupled to the pre-chamber and a main combustion chamber supply system coupled to the main combustion chamber, wherein the control unit is configured to control the pre-chamber supply system such that a supply volume exceeds a volume of the pre-chamber and that a surplus of the supply volume is communicated to the main combustion chamber, such as during a transient operating condition.

Abstract: An internal combustion engine includes transfer passages between a pre-chamber and a main combustion chamber, and a control unit configured to control a pre-chamber supply system coupled to the pre-chamber and a main combustion chamber supply system coupled to the main combustion chamber, wherein the control unit is configured to control the pre-chamber supply system such that a supply volume exceeds a volume of the pre-chamber and that a surplus of the supply volume is communicated to the main combustion chamber, such as during a transient operating condition.

Abstract: Method for operating a power plant for generating energy, comprising at least one stationary internal combustion engine (1) and a district heating system (20) connected to the at least one internal combustion engine (1) in a heat exchange relationship, wherein the at least one internal combustion engine (1) is configured to deliver a mechanical power by burning a fuel, wherein on the one hand the at least one internal combustion engine (1) is cooled and on the other hand heat is supplied to the district heating system (20) through a heat exchange between the district heating system (20) and the at least one internal combustion engine (1) and wherein at least one additional cooling device (12) is provided, wherein the cooling of the at least one internal combustion engine (1) is effected—at least partially—using the at least one additional cooling device (12) when a transient performance requirement for the at least one internal combustion engine (1) occurs.

Abstract: A cylinder head for an internal combustion engine comprising a prechamber (3), wherein a prechamber gas valve (5) is fitted into a cavity of the cylinder head (2) and the prechamber gas valve (5) is connected to the prechamber (3) by way of a flow transfer passage (10), wherein the flow transfer passage (10) for a given cross-sectional area immediately downstream of the prechamber gas valve (5) is of such a length that in operation of the cylinder head (2) mounted in an internal combustion engine in a compression stroke of the combustion process propellant gas which flow out of the prechamber gas valve (5) forms a gas cushion at least in a first portion (8) of the flow transfer passage (10), that adjoins the prechamber gas valve (5).

Abstract: A cylinder head for an internal combustion engine comprising a prechamber (3), wherein a prechamber gas valve (5) is fitted into a cavity in the cylinder head (2) and the prechamber gas valve (5) is connected to the prechamber (3) by way of a flow transfer passage (10), wherein the flow transfer passage (10) has a first portion (8) adjoining the prechamber gas valve (5) and a second portion (1) into which the first portion (8) opens, wherein the second portion (1) extends at least around a part of a periphery of the prechamber (3), wherein the second portion (1) has an uninterrupted peripheral surface apart from that opening (7) with which it passes into the prechamber (3).

Abstract: An internal combustion engine comprising: a main combustion chamber comprising at least one intake valve and at least one exhaust valve, wherein at least one intake port fluidically connected to an intake manifold is configured to supply an air and/or an air-fuel-mixture to the main combustion chamber via the at least one intake valve, and a pre-chamber which is in fluid connection with the main combustion chamber, wherein the pre-chamber is in fluid connection with the intake port and/or the intake manifold through a supply line, wherein at least one fuel injector is configured to enrich the air and/or air-fuel-mixture supplied to the main combustion chamber to have a lower ignition delay than an air-fuel-mixture supplied to the pre-chamber and/or air or air-fuel-mixture can be supplied to the pre-chamber to have a higher ignition delay than an air-fuel-mixture supplied to the main combustion chamber.

Abstract: Method for operating a power plant for generating energy, comprising at least one stationary internal combustion engine (1) and a district heating system (20) connected to the at least one internal combustion engine (1) in a heat exchange relationship, wherein the at least one internal combustion engine (1) is configured to deliver a mechanical power by burning a fuel, wherein on the one hand the at least one internal combustion engine (1) is cooled and on the other hand heat is supplied to the district heating system (20) through a heat exchange between the district heating system (20) and the at least one internal combustion engine (1) and wherein at least one additional cooling device (12) is provided, wherein the cooling of the at least one internal combustion engine (1) is effected—at least partially—using the at least one additional cooling device (12) when a transient performance requirement for the at least one internal combustion engine (1) occurs.

Abstract: A cylinder head for an internal combustion engine comprising a prechamber (3), wherein a prechamber gas valve (5) is fitted into a cavity of the cylinder head (2) and the prechamber gas valve (5) is connected to the prechamber (3) by way of a flow transfer passage (10), wherein the flow transfer passage (10) for a given cross-sectional area immediately downstream of the prechamber gas valve (5) is of such a length that in operation of the cylinder head (2) mounted in an internal combustion engine in a compression stroke of the combustion process propellant gas which flow out of the prechamber gas valve (5) forms a gas cushion at least in a first portion (8) of the flow transfer passage (10), that adjoins the prechamber gas valve (5).

Abstract: A cylinder head for an internal combustion engine comprising a prechamber (3), wherein a prechamber gas valve (5) is fitted into a cavity in the cylinder head (2) and the prechamber gas valve (5) is connected to the prechamber (3) by way of a flow transfer passage (10), wherein the flow transfer passage (10) has a first portion (8) adjoining the prechamber gas valve (5) and a second portion (1) into which the first portion (8) opens, wherein the second portion (1) extends at least around a part of a periphery of the prechamber (3), wherein the second portion (1) has an uninterrupted peripheral surface apart from that opening (7) with which it passes into the prechamber (3).

Abstract: A method of operating an internal combustion engine, wherein a fuel-air mixture is burnt in the internal combustion engine and the internal combustion engine drives a generator, wherein the generator is connected to a power supply network and delivers power to the power supply network and wherein upon or after detection of a dynamic network fault by which the power delivery of the generator into the power supply network is reduced acceleration of the internal combustion engine is prevented or limited, wherein upon or after the detection of the network fault in the power supply network the fuel feed to the internal combustion engine is increased.

Abstract: A method of operating an arrangement includes using a rotating drive machine, wherein a value characteristic of a change of a power output of the arrangement is provided by measuring at least one parameter and/or calculation. The rotating drive machine is open and/or closed loop controlled depending on the value characteristic of the change of the power output of the arrangement and/or a load of the rotating drive machine is changed depending on the value characteristic of the change of the power output of the arrangement, such that the change of the power output of the arrangement is substantially compensated.

Abstract: Internal combustion engine with a controller and at least one combustion chamber and an at least one ignition amplifier associated with the combustion chamber, whereby the at least one combustion chamber, on the one hand via a feeding device for a fuel-air mixture, can be supplied with energy, and on the other hand can be supplied with energy by the associated ignition amplifier, whereby the controller is designed to change the excess-air ratio of the fuel-air mixture in a detection mode for the at least one combustion chamber, and at least one sensor is provided, whose signals can be supplied to the controller and whose signals are characteristic of the combustion event in at least one combustion chamber and that the controller is designed such that, depending on the signals supplied by at least one sensor, a representative detection signal is generated associated with a status of the at least one ignition amplifier associated with at least one combustion chamber.

Abstract: A method of controlling an internal combustion engine having a plurality of cylinders, in particular a stationary internal combustion engine, wherein actuators of the internal combustion engine are actuable in crank angle-dependent relationship and/or sensor signals of the internal combustion engine can be ascertained in crank angle-dependent relationship, for compensation of a torsion of a crankshaft, by which torsion deviations in the crank angle occur between a twisted and an untwisted condition of the crankshaft, wherein for at least two of the cylinders a cylinder-individual value of the angle deviation is ascertained and the crank angle-dependent actuator or sensor signals are corrected in dependence on the detected angle deviation.

Abstract: Internal combustion engine (1) with a controller (2) and at least one combustion chamber (3) and an at least one ignition amplifier (4) associated with the combustion chamber (3), whereby the at least one combustion chamber (3), on the one hand via a feeding device (5) for a fuel-air mixture, can be supplied with energy, and on the other hand can be supplied with energy by the associated ignition amplifier (4), whereby the controller (2) is designed to change the excess-air ratio (?) of the fuel-air mixture in a detection mode for the at least one combustion chamber (3), and at least one sensor (6) is provided, whose signals can be supplied to the controller (2) and whose signals are characteristic of the combustion event in at least one combustion chamber (3) and that the controller (2) is designed such that, depending on the signals supplied by at least one sensor (6), a representative detection signal is generated associated with a status of the at least one ignition amplifier (4) associated with at least

Abstract: A system includes an eddy current brake. The eddy current brake includes a back plate and a first inductor. The first inductor includes a pole coupled to the back plate and a winding disposed about the pole, wherein the winding is configured to conduct an electric current to generate a magnetic field. At least one of the back plate and the pole 104 includes a plurality of laminations.