Abstract: Methods and systems are provided for a cylinder head. In one example, a system comprises cylinder head having a bore arranged therein. The bore comprises a coupling element therein configured to selectively receive an ignition plug.

Abstract: Methods and systems are provided for a prechamber. In one example, the prechamber comprises one or more valves for optionally adjusting gas flow therethrough. The one or more valves may allow pre-chamber and combustion chamber settings to be modified, thereby enhancing combustion operating parameters.

Abstract: Methods and systems are provided for an engine configured to deactivate at least some cylinders. In one example, an engine system may comprise a first group of cylinders having a first compression ratio and a second group of cylinders having a second compression ratio greater than the first.

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 cylinder head. In one example, a system comprises cylinder head having a bore arranged therein. The bore comprises a coupling element therein configured to selectively receive an ignition plug.

Abstract: Methods and systems are provided for a compressed natural gas fuel rail. In one example, a system comprises a device having a first volume for housing compressed natural gas and a second volume for housing lubricant, the first and second volumes arranged in a single housing and separated by a barrier. Lubricant flow from the second volume to the first volume may be adjusted by adjusting a pressure of the second volume so that a pressure difference between the second and first volumes is increased to increase lubricant flow or decreased to decrease lubricant flow.

Abstract: A device for supplying lubricant for a fuel injection nozzle for injecting compressed natural gas (CNG) into an internal combustion engine is provided. The device includes a lubricant reservoir for supplying lubricant and having a feed pressure supply apparatus for applying a feed pressure to lubricant which is stored in the lubricant reservoir, where a feed pressure valve for setting the feed pressure is provided between the feed pressure supply apparatus and the lubricant reservoir, and a lubricant metering valve for metering the lubricant supply is provided between the lubricant reservoir and the fuel injection nozzle, where the lubricant is fed to the lubricant reservoir from an oil gallery of the internal combustion engine.

Abstract: Methods and systems are provided for a prechamber. In one example, the prechamber comprises one or more valves for optionally adjusting gas flow therethrough. The one or more valves may allow pre-chamber and combustion chamber settings to be modified, thereby enhancing combustion 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 high-pressure fuel injection system includes a nozzle housing and a nozzle needle that is axially displaceable in the nozzle housing and with which an outflow opening in a valve seat of the fuel injection nozzle can be closed and opened. At least one pulsation reducer is arranged between the nozzle needle and an inside of the nozzle housing. The pulsation reducer includes a plurality of breakwater elements that dampen pressure pulsations in the fuel flowing through the injection nozzle to the outflow opening.

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 direct-injection, supercharged internal combustion engine having at least one cylinder, in which each cylinder is equipped with a direct injection apparatus, a fuel supply system comprising a high-pressure side and a low-pressure side, and a high-pressure piston pump comprising a piston displaceable in translational fashion between a bottom dead center and a top dead center of a pressure chamber of variable volume. The displaceable piston jointly delimits the pressure chamber with variable volume in such a way that a displacement of the piston causes a change in the volume of the pressure chamber via actuation of least one movable actuation element.

Abstract: Examples are provided for switching an engine fuel supply. One example system includes a direct-injection engine including a cylinder, an LPG tank for storing a LPG fuel, a CNG tank for storing a CNG fuel, a gas switching valve, a high-pressure pump connected between the LPG tank and the gas switching valve, a pressure-limiting valve connected between the CNG tank and the gas switching valve, a fuel distributor configured to be supplied with one or more of the LPG fuel and the CNG fuel via the gas switching valve, an LPG injection valve coupled to the cylinder, a CNG injection valve coupled to the cylinder, the LPG injection valve and the CNG injection valve configured to be supplied with fuel via the fuel distributor; and a controller configured to control the gas switching valve depending on an aggregate state of the fuel disposed in the fuel distributor.

Abstract: Approaches for controlling dwell time in the ignition system of an internal combustion engine are provided. In one example, a method may include adjusting dwell based on engine operating conditions and further adjusting dwell in a manner proportional to existent spark plug conditions. By constantly assessing spark plug condition during operating of the internal combustion engine, premature wear of the spark plug may be prevented leading to an extension in the service life of spark plug and other ignition system components.

Abstract: The disclosure relates to an injection valve for an internal combustion engine of a motor vehicle, having a cooling device for cooling the injection valve. The mentioned cooling device is a thermosiphon cooling device, wherein the thermosiphon cooling device comprises a reservoir volume, and wherein the cooling element has a thermally conductive connection to the reservoir volume.

Abstract: A brake booster system for assisting a braking operation of a motor vehicle having a brake booster is provided. The brake booster system may include a pressure piston of a brake master cylinder, an actuating element which is configured for deflecting the pressure piston, and a brake booster which is divided into two chambers by way of a diaphragm, the first chamber is connected to the pressure piston and has a pressure p1 and the second chamber is connected to the actuating element and has a pressure p2. Furthermore, in the brake booster system, there is a pressure build up apparatus which is configured to raise the pressure p2 above the pressure p1 by way of said pressure build up apparatus.

Abstract: Systems and methods are provided for a direct-injection engine having at least one cylinder head comprising at least one cylinder, in which each cylinder is assigned an injection nozzle which: is at least connectable to a fuel reservoir which serves for storing fuel, is secured in a nozzle holder, and is fitted with a nozzle needle which is displaceable in the direction of a longitudinal axis in a nozzle needle guide and, opens up at least one nozzle hole in order to introduce fuel. A control piston may be mounted movably on the injection nozzle, is displaceable in a translatory manner along the longitudinal axis of the injection nozzle between an inoperative position and a working position, and closes at least one fluid connection in the inoperative position and opens up same in the working position in order to introduce water into the associated cylinder.

Abstract: A device for supplying lubricant for a fuel injection nozzle for injecting compressed natural gas (CNG) into an internal combustion engine is provided. The device includes a lubricant reservoir for supplying lubricant and having a feed pressure supply apparatus for applying a feed pressure to lubricant which is stored in the lubricant reservoir, where a feed pressure valve for setting the feed pressure is provided between the feed pressure supply apparatus and the lubricant reservoir, and a lubricant metering valve for metering the lubricant supply is provided between the lubricant reservoir and the fuel injection nozzle, where the lubricant is fed to the lubricant reservoir from an oil gallery of the internal combustion engine.

Abstract: Methods and systems are provided for an engine configured to deactivate at least some cylinders. In one example, an engine system may comprise a first group of cylinders having a first compression ratio and a second group of cylinders having a second compression ratio greater than the first.

Abstract: Methods and systems are provided for a compressed natural gas fuel rail. In one example, a system comprises a device having a first volume for housing compressed natural gas and a second volume for housing lubricant, the first and second volumes arranged in a single housing and separated by a barrier. Lubricant flow from the second volume to the first volume may be adjusted by adjusting a pressure of the second volume so that a pressure difference between the second and first volumes is increased to increase lubricant flow or decreased to decrease lubricant flow.