초록 ▼

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 ins

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).

대표청구항 ▼

A fuel injection valve having a tubular valve body (10), on one end of which a fuel outlet having at least one controlled injection opening (12) is provided, an electrically insulating body (4) in which the valve body (10) is retained, said insulating body being confined in a holder body (1) compris

A fuel injection valve having a tubular valve body (10), on one end of which a fuel outlet having at least one controlled injection opening (12) is provided, an electrically insulating body (4) in which the valve body (10) is retained, said insulating body being confined in a holder body (1) comprising electrically conductive material, further wherein the holder body of the fuel injection valve can be connected to an internal combustion engine and the end of the valve body (10) which protrudes from the insulating body, has at least one wire-like electrode (46) which is in electrically conductive contact with the valve body (10) and which forms together with a second wire-like electrode (48) affixed to the holder body (1) a spark gap (49) of a spark ignition device, wherein the electrical voltage is delivered via the holder body (1) on the one hand and the valve body (10) on the other, both wire-like electrodes are space wire-like electrode (48) of the holder body (1) is located in a circumferential direction of a circle about the axis of the valve body (10), beside the wire-like electrode (46, 47) of the valve body (10) and thereby forms said spark gap (49), in the injection region of the fuel which emerges transversely to the longitudinal axis of the valve body injection opening (12).