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Electromagnetically actuated volume control valve, in particular for controlling the delivery volume of a high-pressure fuel pump

A technology of electromagnetic operation and control valve, applied in the direction of fuel injection pump, fuel injection device, charging system, etc., can solve problems such as affecting fuel quantity, and achieve the effect of reducing pressure difference and reducing switching time

Active Publication Date: 2012-09-19
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The amount of fuel delivered to the high-pressure pump in the fuel injection system of the internal combustion engine can thus be influenced

Method used

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  • Electromagnetically actuated volume control valve, in particular for controlling the delivery volume of a high-pressure fuel pump
  • Electromagnetically actuated volume control valve, in particular for controlling the delivery volume of a high-pressure fuel pump
  • Electromagnetically actuated volume control valve, in particular for controlling the delivery volume of a high-pressure fuel pump

Examples

Experimental program
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Embodiment Construction

[0038] figure 1 A fuel injection system 1 of an internal combustion engine is shown in an extremely simplified schematic diagram. The fuel tank 9 is connected via a suction line 4 , a prefeed pump 5 and a low-pressure line 7 to a high-pressure pump 3 (not described in detail). A high-pressure accumulator 13 (“common rail”) is connected to the high-pressure pump 3 via a high-pressure line 11 . A quantity control valve 14 with a solenoid actuated device 15—hereinafter referred to as electromagnet 15—is arranged between the prefeed pump 5 and the high-pressure pump 3 in the extent of the low-pressure line. Other components, such as the valve of the high-pressure pump 3 figure 1 not shown in. It is understood that the quantity control valve 14 can be formed as a structural unit with the high-pressure pump 3 . For example, the inlet valve of the high-pressure pump 3 can be forced open by the flow control valve 14 .

[0039] During operation of fuel injector 1 , prefeed pump 5 ...

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Abstract

The invention relates to an electromagnetically actuatable volume control valve, in particular for controlling the delivery volume of a high-pressure fuel pump. The volume control valve comprises a movement chamber (28), which can be filled with a fluid (30), a moving part (22) of an electromagnetic actuating device arranged in said chamber, and a stop (26). When the moving part (22) rests against the stop (26), a contact area is present between the moving part (22) and the stop (26). The contact area is defined by a surface of the moving part (22) and a surface of the stop (26). The contact area is smaller than the total area of the moving part (22) or the stop (26).

Description

technical field [0001] The invention relates to a solenoid-operated quantity control valve according to the preamble of claim 1 . Background technique [0002] Quantity control valves are known on the market, which valves have a solenoid-actuated valve element. The quantity of fuel delivered to the high-pressure pump in the fuel injection system of the internal combustion engine can thus be influenced. [0003] It is also known that the armature of the electromagnet is provided, for example, with a longitudinal bore in order to be able to adjust the damping that occurs during the movement of the armature. Fluid, ie fuel, is conveyed from one axial side of the armature to the other through such an axial bore in the armature. As an alternative to the axial bore in the armature, it is also known to provide axial grooves in the circumferential wall of the armature, which also allow fluid exchange on both sides of the armature. Contents of the invention [0004] The inventio...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M59/36F02M59/46F02M63/00
CPCF02M59/366F02M59/466F02M63/0017
Inventor W·埃卡特V·赛尔穆茨齐E·多甘J·科雷茨M·梅斯
Owner ROBERT BOSCH GMBH
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