METHOD FOR OPERATING A FUEL INJECTOR WITH AN IDLE STROKE

• Main Authors: DENK FRANK, ROSEL GERD
• Format: Patent
• Language: Chinese; English
• Published: 21.12.2018
• Subjects: BASIC ELECTRIC ELEMENTS; BLASTING; COMBUSTION ENGINES; CONTROLLING COMBUSTION ENGINES; ELECTRICITY; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; INDUCTANCES; LIGHTING; MAGNETS; MECHANICAL ENGINEERING; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES; SUPPLYING COMBUSTION ENGINES IN GENERAL, WITH COMBUSTIBLEMIXTURES OR CONSTITUENTS THEREOF; TRANSFORMERS; WEAPONS

The invention relates to a method for actuating a fuel injector for an internal combustion engine of a motor vehicle, said fuel injector having a solenoid drive and a nozzle needle, wherein the solenoid drive has a solenoid and a movable armature, and the fuel injector has an idle stroke between the armature and the nozzle needle. The method has the following steps: (a) applying a pre-charging current to the solenoid drive during a pre-charging phase in order to bring the movable armature into mechanical contact with the nozzle needle, and (b) applying a voltage pulse to the solenoid drive during a boost phase until the current strength of the current flowing through the solenoid reaches a specified peak value. The invention also relates to a motor controller and a computer program. 描述了种用于操控用于机动车的内燃机的燃料喷射器的方法，所述燃料喷射器具有磁线圈驱动器和喷嘴针，其中，所述磁线圈驱动器具有磁线圈和可运动的电枢，其中，所述燃料喷射器具有在所述电枢和所述喷嘴针之间的空行程。所述方法包括以下步骤：（a）在预增压阶段期间，以预增压电流加载所述磁线圈驱动器，以便使所述可运动的电枢与所述喷嘴针机械接触；和（b）在增压阶段期间，以电压脉冲加载所述磁线圈驱动器，直到流过所述磁线圈的电流的电流强度达到预先确定的峰值。也描述了种发动机控制器和