A method for adapting the injection characteristic of a fuel injection valve of an internal combustion engine to production-related tolerances is described. In the method, an injection quantity correction value is determined from the deviation of the idle travel and the deviation of the injection quantity of the injection valve before the operating phase of the injector. This injection quantity correction value is used to determine the injection-specific deviation of the injection quantity during the operating phase at the start of the operating phase of the injector in conjunction with the current deviation of the idle travel which is determined in the system. The injector-specific deviation of the injection quantity which is determined is used to correct the injection characteristic. As a result, changes in the injection quantity of an injector can be detected and corrected particularly precisely on the basis of production tolerances.

A fuel-injection device has a low-noise and pivotable structure. The fuel-injection device includes at least a fuel injector and a receiving bore in a cylinder head for the fuel-injector, and a decoupling element between a valve housing of the fuel injector and a wall of the receiving bore. The decoupling element is captively situated on the fuel injector prior to its installation in the receiving bore in that a securing ring is mounted below the decoupling element at the outer periphery of the fuel injector and the securing ring is a closed plastic ring. The fuel-injection device is particularly suited for the direct injection of fuel into a combustion chamber of a mixture-compressing internal combustion engine having externally supplied ignition.

A fuel delivery assembly for an internal combustion engine, including an injector cup, a fuel injector received therein, and a spring clip is disclosed. The injector cup has a circumferential wall with an external shoulder. The fuel injector has a shoulder which is axially spaced apart from the injector cup. The spring clip has a base portion with two radially compliant webs bearing against the shoulder of the circumferential wall and being in force-fit engagement with the circumferential wall. The spring clip has an axially compliant portion bearing against the shoulder of the fuel injector and being elastically deformable to bias the fuel injector in axial direction from the upper end towards the lower end.

A fuel injector cup includes a body having a first opening configured to receive fuel into the body and a second opening configured to receive a fuel injector for dispensing fuel. The cup further includes a mounting flange coupled with the body and extending therefrom, the mounting flange configured to be connected to a support surface to secure the cup to the support surface. The cup also includes a locating member coupled with at least one of the body or the mounting flange, the anti-rotation member configured to engage the fuel injector when received in the body and to orient and prevent rotation of the fuel injector relative to the body.

A fuel injector cup includes a body having a first opening configured to receive fuel into the body and a second opening configured to receive a fuel injector for dispensing fuel. The cup further includes a mounting flange coupled with the body and extending therefrom, the mounting flange configured to be connected to a support surface to secure the cup to the support surface. The cup also includes a locating member coupled with at least one of the body or the mounting flange, the anti-rotation member configured to engage the fuel injector when received in the body and to orient and prevent rotation of the fuel injector relative to the body.

A fuel injector 100 includes a nozzle member 60 having a fuel passage 60a leading to an injection port 60b; a valve main body 51 adapted to reciprocate for opening and closing the fuel passage 60a; an elastic portion 56 elastically deformable in closing the fuel passage 60a by movement of the valve main body 51 in a closing direction, the elastic member being attached to one of the nozzle member 60 and the valve main body 51 and adapted to be abutted against the other of the nozzle member 60 and the valve main body 51 to close the fuel passage 60a by moving the valve main body 51 in the closing direction; and a stopper 70 adapted to restrict movement of the valve main body 51 in the closing direction by being abutted against the valve main body 51, the stopper 70 being formed of material different from the nozzle member 60.

A fuel injector for an internal combustion engine includes: an electromagnetic actuating element having a solenoid coil, a core and a valve casing as the outer solenoid circuit component, and a movable valve-closure body, which cooperates with a valve-seat surface assigned to a valve-seat body. The core and a connection pipe are fixedly connected in an inner opening of a thin-walled valve sleeve and the valve casing at the outer circumference of the valve sleeve is fixedly connected to the valve sleeve by being pressed in/on.

An anti-reflection device for preventing the reflection of pressure waves inside a fuel injection valve. The anti-reflection device includes an essentially cylindrical base body with a first base side, a second base side, and an outer surface. The anti-reflection device also includes a longitudinal axis orientated parallel to a propagation direction of a pressure wave. The longitudinal axis penetrating the first base side and the second base side. The anti-reflection device also includes a flow path for fuel formed between the first base side and the second base side. The flow path forming a curve around the longitudinal axis.

The housing (18) of the fuel injection valve (10) of the device for intermittently injecting fuel into the combustion chamber of an internal combustion engine comprises a high-pressure inlet (34) with a conical sealing face (44). The high-pressure chamber (36) is disposed in the housing (18) from the high-pressure inlet (34). A cartridge-like, independent component (56) is inserted into the high-pressure chamber (36). Said component comprises the valve carrier (46), the non-return valve (48), the holding element (50), and preferably the filter body (52′). The valve carrier (46) is provided with a conical outer sealing face (69), by which the valve carrier rests against the conical sealing face (44). A fixing element (74) presses the supply line (16) against the valve carrier (46).

In a mounting tool for mounting an injector on a cylinder head of an engine by being engaged with the injector connected to a fuel pipe, and urging the injector toward the cylinder head, a first band portion has a ring shape so as to surround an outer circumference of the injector, and is disconnected in a circumferential direction by a slit. A second band portion has a ring shape so as to surround the outer circumference of the injector, is disconnected in the circumferential direction by a slit, and is arranged adjacent to the first band portion in an axial direction. Plural elastic band portions connect the first band portion and the second band portion in the axial direction. The mounting tool is made of a single metallic plate.