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Method for controlling a solenoid valve of a quantity controller in an internal combustion engine

A flow control valve, solenoid valve technology, applied in engine control, charging system, electrical control and other directions, can solve the problems of high suction power and large collision speed of solenoid valve

Active Publication Date: 2010-06-30
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the specified energization is often chosen to be so high that the suction capacity of the solenoid valve is relatively high and thus leads to a correspondingly high impact velocity of the armature against the displacement limit stop, which leads to a violent shock of the armature. hits the displacement limiting stop

Method used

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  • Method for controlling a solenoid valve of a quantity controller in an internal combustion engine
  • Method for controlling a solenoid valve of a quantity controller in an internal combustion engine
  • Method for controlling a solenoid valve of a quantity controller in an internal combustion engine

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Embodiment Construction

[0024] figure 1 A schematic diagram of a fuel injection system 10 of an internal combustion engine is shown. The fuel injection system 10 includes an electric fuel pump 11 with which fuel is delivered from a fuel tank 12 and pumped further through a fuel filter 13 . The fuel pump 11 is suitable for generating a low pressure. To control and / or regulate this low pressure, a low-pressure regulator 14 is provided, which is connected to the outlet of the fuel filter 13 and via which the fuel can be fed back to the fuel tank. 12. Furthermore, a series connection of a flow control valve 15 and a mechanical high-pressure pump 16 is connected to the outlet of the fuel filter 13 . The outlet of the high pressure pump 16 is connected back to the inlet of the flow control valve 15 via an overpressure valve 17 . Furthermore, the outlet of the high-pressure pump 16 is connected to a pressure accumulator 18 , to which a plurality of injection valves 19 are connected. The pressure regula...

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Abstract

The invention relates to a method for controlling a fuel injection system (10) of an internal combustion engine, the fuel injection system (10) comprising a high-pressure pump (16) associated with a quantity controlling valve (15) having a solenoid valve (22) electromagnetically actuatable by a coil (21) for supplying fuel, the quantity control valve (15) controlling the quantity of fuel supplied by the high-pressure pump (16) and the coil (21) of the solenoid valve (22) having a first current value applied thereto, in order to close the same for supplying fuel to the high-pressure pump (16), the first current value being reduced to a second current value when the solenoid valve is closing (22), such that the radiation of audible sound arising from the closing of the solenoid valve (22) is at least partially reduced.

Description

technical field [0001] The invention relates to a method for controlling a fuel injection system of an internal combustion engine, wherein the fuel injection system comprises a high-pressure pump to which a flow control valve is assigned, which in turn has a solenoid actuatable via a coil A solenoid valve for feeding fuel, wherein the flow control valve controls the amount of fuel delivered by the high-pressure pump and energizes the coil of the solenoid valve with a first current value for closing the fuel delivery to The solenoid valve of the high pressure pump. Background technique [0002] A method for controlling a fuel injection system with a flow control valve is known from the prior art. Such a flow control valve is generally realized as a solenoid valve which can be actuated electromagnetically via a coil and which then has an armature and an associated displacement-limiting stop. The solenoid valve is open in the de-energized state of the coil. To close the sole...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M59/36F02M59/46
CPCF02M59/366F02D41/3845F02M59/36F02M59/466F02D2041/2058F02D41/2464F02D41/20F02D2200/0602F02D2041/2027
Inventor G·哈夫T·霍尔曼C·韦德曼J·库姆佩尔
Owner ROBERT BOSCH GMBH
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