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Injection valve for injecting a fluid, use of an injection valve and method for producing an injection valve

An injection valve and fluid technology, used in fuel injection control, manufacturing tools, fuel injection devices, etc., can solve the problem of inability to perform accurate fluid dosing, and achieve the effect of short opening time period, short injection time, and improving reset force

Active Publication Date: 2017-11-28
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, precise fluid dosing is often not possible only with knowledge of the start and end of electrical actuation

Method used

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  • Injection valve for injecting a fluid, use of an injection valve and method for producing an injection valve
  • Injection valve for injecting a fluid, use of an injection valve and method for producing an injection valve
  • Injection valve for injecting a fluid, use of an injection valve and method for producing an injection valve

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Embodiment Construction

[0020] exist figure 1 , the internal combustion engine generally bears the reference numeral 10 . The internal combustion engine includes a fuel tank 12 from which a delivery system 14 delivers fuel into a distribution system 16 , such as a common rail system. Attached to the common rail system are solenoid-actuated injection valves 18 which inject fuel directly into combustion chambers 20 assigned to them or into the intake lines of combustion chambers 20 . The operation of internal combustion engine 10 is controlled or regulated by control and regulating device 22 , which also actuates injection valve 18 .

[0021] Figures 2a and 2b schematically show two different operating states according to figure 1injection valve 18. Injection valve 18 has an electromagnetic actuator with an electromagnetic coil 26 and an electromagnetic armature 30 cooperating with electromagnetic coil 26 . The solenoid armature 30 is operatively connected to the valve needle 28 of the injection va...

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Abstract

The invention relates to an injection valve for injecting a fluid, in particular a fuel fluid, wherein the fuel fluid is injected into a suction duct or into a combustion chamber of a cylinder of an internal combustion engine, wherein the injection valve comprises an electromagnetic actuator with a magnetic circuit, the magnetic circuit comprising a solenoid, an inner pole and a magnet armature cooperating with the magnet coil and the inner pole. The magnetic circuit is configured for generating a controlled force action between the inner pole to the magnet armature when the electromagnetic actuator is controlled by means of a control current and / or control voltage. According to the invention, the injection valve has a gap in the region between the inner pole and the magnet armature, wherein the injection valve has a valve sleeve, said valve sleeve having either continuously - both in the region of the gap between the inner pole and the magnet armature - paramagnetic material properties, or paramagnetic material properties in the region of the gap between the inner pole and the magnet armature and ferromagnetic material properties outside this range.

Description

technical field [0001] The invention relates to an injection valve for injecting a fluid, in particular a fuel fluid, into an intake channel or a combustion chamber of a cylinder of an internal combustion engine, the injection valve having an electromagnetic actuator including an electromagnetic circuit. [0002] Furthermore, the invention relates to the use of such an injection valve and a method for producing such an injection valve. Background technique [0003] Solenoid-actuated injection valves of the aforementioned type can be widely used for metering fluids. The injection valve is preferably used in a fuel system of an internal combustion engine for injecting fuel into a combustion chamber (of a cylinder) or an intake duct of the internal combustion engine, wherein the internal combustion engine typically includes a plurality of cylinders. Precise maintenance of the prescribed injection quantities is decisive for the emission and consumption characteristics of the in...

Claims

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Application Information

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IPC IPC(8): F02D41/20F02M61/20F02M51/06
CPCF02D41/20F02M51/0682F02M61/20F02M2200/08F02M2200/9061F02D2041/2055F02D2041/2058C21D1/613C21D9/0068F02M51/061F02M2200/8053
Inventor H·哈梅多维克T·保尔K·施奈德
Owner ROBERT BOSCH GMBH
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