Abstract: A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.

Abstract: Methods and systems are provided for a hydrogen combustion engine. In one example, a method may include operating the hydrogen combustion engine at one of two combustion air ratios, wherein a combustion air ratio between the two is avoided via adjusting one or more operating parameters.

Abstract: Methods and systems are provided for a prechamber. In one example, the prechamber comprises an interior volume fluidly coupled to flow channels of an ignition plug and a bracket. The bracket is configured to move relative to the ignition plug and a cylinder head to misalign the flows channels and block the flow of air to the interior volume.

Abstract: Methods and systems are provided for a hydrogen combustion engine. In one example, a method may include operating the hydrogen combustion engine at one of two combustion air ratios, wherein a combustion air ratio between the two is avoided via adjusting one or more operating parameters.

Abstract: Methods and systems are provided for a prechamber. In one example, the prechamber comprises an interior volume fluidly coupled to flow channels of an ignition plug and a bracket. The bracket is configured to move relative to the ignition plug and a cylinder head to misalign the flows channels and block the flow of air to the interior volume.

Abstract: A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.

Abstract: Methods and systems are provided for a fuel supply system for an internal combustion engine system, in particular of a motor vehicle, having at least one liquefied petroleum gas (LPG) tank for storing an LPG fuel and at least one direct injection unit, which has a direct injection fuel distributor and direct injection valves that can be supplied with fuel via said distributor. In order to improve supply of the internal combustion engine system with LPG fuel, the fuel supply system includes a booster pump inserted between the LPG tank and the direct injection fuel distributor. A discharge side of the booster pump is connected directly to the direct injection fuel distributor by at least one line, and the direct injection valves each have a closure part that rises outward from a valve seat to open the respective direct injection valve.

Abstract: A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.

Abstract: Examples are directed to a fuel injection device positioned in a cylinder liner. In one example, a cylinder includes a combustion chamber which is jointly formed by a piston crown of a piston, by a cylinder barrel which laterally delimits the combustion chamber, and by a cylinder head. The cylinder includes an injection device positioned in the cylinder barrel for direct introduction of fuel into the combustion chamber, which injection device has at least one opening which, during a course of an injection process, is configured to be activated to introduce fuel into the combustion chamber, the injection device terminating flush, at a combustion chamber side, with the cylinder barrel.

Abstract: An exhaust system for an internal combustion engine is provided. The exhaust system includes an exhaust manifold receiving exhaust gas from a cylinder, an emission control device positioned downstream of the exhaust manifold, an electric heating device positioned in an exhaust line upstream of the emission control device and downstream of the exhaust manifold, the electric heating device including a frame at least partially surrounding a heating element, and an adjustment device configured to, during operation of the internal combustion engine, adjust the drag generated by the electric heating device in an exhaust gas flow through the exhaust line.

Abstract: Methods and systems are provided for a fuel supply system for an internal combustion engine system, in particular of a motor vehicle, having at least one liquefied petroleum gas (LPG) tank for storing an LPG fuel and at least one direct injection unit, which has a direct injection fuel distributor and direct injection valves that can be supplied with fuel via said distributor. In order to improve supply of the internal combustion engine system with LPG fuel, the fuel supply system includes a booster pump inserted between the LPG tank and the direct injection fuel distributor. A discharge side of the booster pump is connected directly to the direct injection fuel distributor by at least one line, and the direct injection valves each have a closure part that rises outward from a valve seat to open the respective direct injection valve.

Abstract: A method for operating a fuel injection system is provided. The method includes injecting fuel from a first direct fuel injection device arranged in a cylinder liner in a cylinder block into a combustion chamber and injecting fuel from a second direct fuel injection device arranged in a cylinder head into the combustion chamber, the first and second direct fuel injection devices arranged at an obtuse angle with regard to an intersection of central axes of the first and second direct fuel injection devices.

Abstract: Examples are directed to a fuel injection device positioned in a cylinder liner. In one example, a cylinder includes a combustion chamber which is jointly formed by a piston crown of a piston, by a cylinder barrel which laterally delimits the combustion chamber, and by a cylinder head. The cylinder includes an injection device positioned in the cylinder barrel for direct introduction of fuel into the combustion chamber, which injection device has at least one opening which, during a course of an injection process, is configured to be activated to introduce fuel into the combustion chamber, the injection device terminating flush, at a combustion chamber side, with the cylinder barrel.

Abstract: A system is provided for an internal combustion engine including at least two cylinders, wherein the at least two cylinders form at least two groups, wherein each group has at least one cylinder, the at least one cylinder of at least one group being formed as a cylinder which can be activated in a load-dependent manner and which is deactivated if a predefined load is undershot. The at least two groups are characterized by different cylinder volumes, the at least one cylinder of a first group having a lesser cylinder volume and the at least one cylinder of a second group having a greater cylinder volume and configured as an activatable cylinder.

Abstract: An exhaust system for an internal combustion engine is provided. The exhaust system includes an exhaust manifold receiving exhaust gas from a cylinder, an emission control device positioned downstream of the exhaust manifold, an electric heating device positioned in an exhaust line upstream of the emission control device and downstream of the exhaust manifold, the electric heating device including a frame at least partially surrounding a heating element, and an adjustment device configured to, during operation of the internal combustion engine, adjust the drag generated by the electric heating device in an exhaust gas flow through the exhaust line.

Abstract: A method for controlling valve actuation in an engine is provided. The method includes initiating combustion operation in a first cylinder, opening, via a first cam, a first exhaust valve coupled to the first cylinder for a first opening duration. The method further includes opening, via a second cam, a second exhaust valve coupled to the first cylinder for a second opening duration not equivalent to the first opening duration.

Abstract: Methods and systems are provided for optimizing the operation of a multi-cylinder auto-ignition internal combustion engine. In one example, cylinders of the auto-ignition internal combustion engine may form two groups of cylinders, where one group of cylinders has a larger compression ratio, smaller width, and smaller volume than the other group of cylinders, and where at least one cylinder of the other group is configured as a switchable cylinder that is deactivated in a load-dependent manner. By configuring the cylinders in multiple groups based on compression ratios, and operating the cylinders in a load-dependent manner, fuel consumption may be optimized.

Abstract: The application relates to spark initiation under varied aircharge density and composition. An engine is disclosed comprising at least two cylinders with spark plugs therein; an integrated exhaust manifold, the integrated exhaust manifold having a wall portion and an adjustable shutoff element within the wall portion wherein the wall portion divides exhaust pipes of the at least two cylinders and the adjustable shutoff element allows exhaust gas from a first cylinder into an exhaust pipe of an adjacent cylinder. Hot exhaust gas may be taken into an adjacent cylinder serving as ignition gas and allowing the engine of the present disclosure to undergo spark ignition at low loads, or autoignition at high loads.

Abstract: Methods and systems are provided for accurately measuring an air-fuel-ratio of an engine. During a first condition of decreased scavenging, adjusting fuel injection based on a more-upstream air-fuel ratio, and during a second condition of increased scavenging, adjusting fuel injection based on one or more more-downstream air-fuel ratios and not based on the more-upstream air-fuel ratio. During the first condition, adjusting fuel injection may be further based on the one or more more-downstream air-fuel ratios.

Abstract: An example for operating a spark ignition engine comprises discharging exhaust gases via an exhaust system comprising exhaust pipes from the at least two cylinders coming together to form an exhaust manifold; and initiating autoignition with exhaust gas from a first, exhaust-gas-supplying cylinder, which is discharged from the first cylinder into the exhaust system, the exhaust gas is introduced into an adjacent, exhaust-gas-receiving cylinder via the exhaust system. Exhaust gas from the first cylinder mixes with the air-fuel mixture of an adjacent cylinder raising the temperature therein. Under high loads the higher temperature and density of the aircharge is suitable to undergo autoignition.