Abstract: A fuel injector-spark plug combination (1) includes a fuel injector (2) for the direct injection of fuel into a combustion chamber of an internal combustion engine and a spark plug (3) with a spark-plug insulator (19), the spark plug (3) having a first electrode (20), and a second electrode (21) for igniting the fuel injected into the combustion chamber. The fuel injector (2) and the spark-plug insulator (19) of the spark plug (3) are arranged at a biaxial offset in a respective receiving bore (12; 13) of a shared connecting member (9) inserted in a recess (18) of a cylinder head (19).

Abstract: An internal combustion engine (10) is operated with a method wherein fuel is injected directly into a combustion chamber (12). The injection takes place at least from time to time so that, together with a corresponding supply of air into the combustion chamber (12), the air/gasoline mixture is present stratified in the combustion chamber (12). In order to reduce the gasoline consumption in the engine (10) via a higher compression ratio without the danger of knocking, it is suggested that the gasoline be injected exclusively and also at full load during the compression phase of the engine (12) by a multi-hole fuel injection device (22).

Abstract: A fuel injection system for an internal combustion engine includes a fuel injector which injects fuel into a combustion chamber delimited by a cylinder wall in which a piston is guided, and having a spark plug projecting into the combustion chamber, the fuel injector producing multiple injection jets in the combustion chamber. At least one gap is provided in the injection jets in an area remote from the spark plug.

Abstract: A fuel injection system for internal combustion engines has at least one fuel injector which injects fuel into a combustion chamber with a spark plug projecting into the combustion chamber. The fuel injector has a valve body which has a plurality of injection holes situated on the circumference. The injection holes are designed so that a conical spray jet is produced in the combustion chamber. At least the injection holes situated directly on both sides of the spark plug have an elongated cross section.

Abstract: A fuel injector having an integrated spark plug (1) for injecting fuel directly into a combustion chamber (72) of an internal combustion engine and for igniting the fuel that is injected into the combustion chamber (72) has a valve body (7), which, together with a valve-closure member (10), forms a sealing seat. Disposed contiguously to the sealing seat is a discharge orifice (12), which discharges at a valve-body (7) end face (73) facing the combustion chamber (72). Provision is also made for a housing body (2) that is insulated from the valve body (7), and for an ignition electrode (70a) that is connected to the housing body (2). In this context, a spark arc-over is produced between the valve body (7) and the ignition electrode (70a). The ignition electrode (70a) and the valve body (7) are formed in such a way that the spark arc-over takes place between the end face (73) of the valve body (7) facing the combustion chamber (72) and the ignition electrode (70a).

Abstract: A fuel pump (14) pumps fuel in a method for operating an internal combustion engine (10). The fuel pump (14) is connected at its input end to a fuel tank (12). Fuel reaches at least one combustion chamber (22) of the engine (10) via at least one fuel-injection device (16). In order to be able to inject fuel with still greater accuracy into the combustion chamber (22) of the engine (10), the fuel quantity which arrives in the combustion chamber (22) is determined from the signal of a through-flow measuring device (18).

Abstract: A fuel injector having an integrated spark plug (1) for injecting fuel directly into a combustion chamber (72) of an internal combustion engine and for igniting the fuel that is injected into the combustion chamber (72) has a valve body (7), which, together with a valve-closure member (10), forms a sealing seat. Disposed contiguously to the sealing seat is a discharge orifice (12), which discharges at a valve-body (7) end face (73) facing the combustion chamber (72). Provision is also made for a housing body (2) that is insulated from the valve body (7), and for an ignition electrode (70a) that is connected to the housing body (2). In this context, a spark arc-over is produced between the valve body (7) and the ignition electrode (70a). The ignition electrode (70a) and the valve body (7) are formed in such a way that the spark arc-over takes place between the end face (73) of the valve body (7) facing the combustion chamber (72) and the ignition electrode (70a).

Abstract: A fuel injection system for internal combustion engines has at least one fuel injector (4) which injects fuel into a combustion chamber (7) with a spark plug (3) projecting into the combustion chamber (7). The fuel injector (4) has a valve body (10) which has a plurality of injection holes (11, 11d) situated on the circumference. The injection holes (11, 11d) are designed so that a conical spray jet (5) is produced in the combustion chamber (7). At least the injection holes (11d) situated directly on both sides of the spark plug (3) have an elongated cross section.

Abstract: A fuel injection system (1) for internal combustion engines has at least one fuel injector (7) which injects fuel into a combustion chamber (6) delimited by a cylinder wall (2) in which a piston (3) is guided, and it has a spark plug (8) which protrudes into the combustion space (6), and the fuel injector (7) is designed so that a conical spray jet (13) is produced in the combustion chamber (6). The conical spray jet (13) has an angle cutout (17) in the area of the spark plug (8).

Abstract: A fuel injection system (1) for an internal combustion engine (1′) includes a fuel injector (4) which injects fuel into a combustion chamber (7) delimited by a cylinder wall (14) in which a piston (6) is guided, and having a spark plug (3) projecting into the combustion chamber (7), the fuel injector (4) producing multiple injection jets (10) in the combustion chamber (7). At least one gap (15) is provided in the injection jets (10) in an area remote from the spark plug (3).

Abstract: In lean operation of internal combustion engines having externally supplied ignition, improvement in terms of fuel consumption and emissions are obtained if the fuel is injected directly into the combustion chamber. Because the gas exchange guide cross sections are large, the space available for installing the injection valve and spark plug is very limited, and disruptions in the course of combustion occur when the injection valve and ignition device are too far apart. By developing a fuel injection valve that has wire electrodes on the injection end to serve as an ignition device, the spark gap arcing over in the vicinity of the fuel introduced by the injection valve, optimal ignition conditions are attained even for poorly ignited fuels or when the proportion of fuel in the combustion chamber charge is extremely low (stratified charge operation).