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OwnerRalf Bindel, Ralf Schulteinventors
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In a method for measuring the injection quantity of injection nozzles (24), in particular for motor vehicles and in particular in production testing, testing fluid (32) is injected into a measuring chamber (30) by an injection nozzle (24). This imparts movement to a piston (16), which at least partially defines the measuring chamber (30). The movement of the piston (16) is detected by a detection device (42), which generates a corresponding measurement signal (sm). In order to increase the measurement precision, the invention proposes that an effective quantity (Vn) and at least one disturbance quantity (Ve) be obtained through the use of the measuring signal (sm), where the effective quantity (Vn) in turn essentially corresponds to the actual injection quantity (mi).
A method for measuring the injection quantity of injection nozzles (24), in particular for motor vehicles and in particular in production testing, in which a testing fluid (32) is injected into a measuring chamber (30) by an injection nozzle (24) and a movement of a piston (16), which at least partially defines the measuring chamber (30), is detected by a detection device (42), which generates a corresponding measurement signal (sm), characterized in that an effective quantity (Vn) and at least one disturbance quantity (Ve) can be obtained through the use of the measuring signal (sm), where the effective quantity (Vn) essentially corresponds to the actual injection.
The method according to one of the preceding claims, characterized in that at least a part (Ve1) of the disturbance quantity (Ve) is essentially based on the movement components of the piston (16) that are due to a leakage through the annular gap encompassing the piston (16).
The method according to one of the preceding claims, characterized in that the effective quantity (Vn) is determined by subtracting the disturbance quantity (Ve) from a total quantity (Vm).
The method according to one of the preceding claims, characterized in that the division into the effective quantity (Vn) and the disturbance quantity (Ve) is executed by means of a mathematical algorithm (66).
A device for measuring an injection quantity of injection nozzles (24), in particular for motor vehicles and in particular for production testing, having a measuring chamber (30) into which a testing fluid (32) can be injected by an injection nozzle (24), having a piston (16), which at least partially defines a measuring chamber (30), and having a detection device (42), which detects a movement of the piston (16) and generates a corresponding measurement signal (sm), characterized in that it includes a processing unit (44) in which an effective quantity (Vn) and at least one disturbance quantity (Ve) are obtained through the use of the measuring signal (sm), where the effective quantity (Vn) essentially corresponds to the actual injection.
Dependencies are inferred from the claim text.