Method and device for influencing the injection pressure distribution on injectors
AssigneeRobert Bosch GmbH
InventorsNestor Rodriguez-Amaya, Roger Potschin, Ulrich Projahn
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Abstract
The invention relates to a method for shaping the injection pressure course (27) in injectors, which are used for instance in injection devices of injection systems in motor vehicles. The injection device includes a pump part (1) and an injection nozzle part (2). The pump part (1) and injection nozzle part (2) communicate with one another via a high-pressure line (3). Control valves (8, 10) which are triggered by means of an actuator (9) are contained in the pump part (1). By the triggering by means of the actuator (9), injection parameters during the preinjection phase (28), pressure buildup phase (29) and main injection phase (30) are determined.
Claims10
A method for shaping the injection pressure course (27) in injection devices, for instance of motor vehicles, including an injection device with a pump part (1) and an injection nozzle part (2), which communicate with one another via a high-pressure line (3), and control valves (8, 10) are received in the pump part (1), characterized in that by the triggering of the control valves (8, 10) by an actuator (9), injection parameters during the preinjection phase (28), pressure buildup phase (29) and main injection phase (30) are determined.
A device for shaping the injection pressure course (27) in an injection device, for instance of motor vehicles, in which the injection device includes a pump part (1) and an injection nozzle part (2) which communicate with one another via a high-pressure line (3), and control valves (8, 10) are received in the pump part, characterized in that the control valves (8, 10) can be positioned independently of one another into closed and/or partly open positions by means of a piezoelectric actuator (9), and an equal-pressure valve (7) is associated with one of the control valves (8, 10).
Dependencies are inferred from the claim text.