Injection valve for water injection system of internal combustion engine and water injection system

A technology of injection valve and water injection, used in fuel injection devices, internal combustion piston engines, special fuel injection devices, etc., can solve problems such as icing and damage, and achieve the effect of suppressing eddy current, increasing flow speed, and accelerating emptying.

Pending Publication Date: 2021-11-05
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In internal combustion engines with water injection there is the risk that lines and / or components carrying the water will freeze at low temperatures and be damaged due to ice pressure

Method used

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  • Injection valve for water injection system of internal combustion engine and water injection system
  • Injection valve for water injection system of internal combustion engine and water injection system
  • Injection valve for water injection system of internal combustion engine and water injection system

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Experimental program
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Embodiment Construction

[0030] Depend on figure 1 An injection valve 1 for a water injection system 50 of an internal combustion engine 100 is obtained, which comprises an annular solenoid coil 2 for acting on a reciprocating armature 3 which is connected to a valve element 4 . In the present case, the valve element 4 is designed as a hollow needle and is connected at its end facing away from the armature 3 to a spherical valve closing element 29 in order to release and close at least one injection opening 30 . When the solenoid coil 2 is energized, a magnetic field is formed whose magnetic force moves the armature 3 together with the valve element 4 and the valve closing element 29 in the direction of the core 5 in order to close the working air gap 31 formed between the core 5 and the armature 3 . In this case, the spherical valve closing element 29 releases the injection opening 30 . If the energization of the solenoid coil 2 is subsequently terminated, the armature 3 , the valve element 4 and th...

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PUM

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Abstract

The invention relates to an injection valve (1) for a water injection system (50) of an internal combustion engine (100). The injection valve comprises an annular electromagnetic coil (2) for acting on a reciprocating armature (3) which is connected to a valve element (4); and a hollow cylindrical core (5) which is surrounded at least in sections by the electromagnetic coil (2) and is formed on or connected to an inlet connection (6) via which the injection valve (1) can be supplied with water. According to the present invention, a body (8) is inserted into the inlet connection (6), and is penetrated by at least one flow channel (9) in an axial direction (a), wherein a flow channel (9) formed in the body (8) defines an inlet opening (10) for supplying water to the injection valve (1), and the body (8) is pressed into a receptacle (60) of the inlet connector (6). The invention also relates to the water injection system for the internal combustion engine.

Description

technical field [0001] The invention relates to an injection valve for a water injection system of an internal combustion engine. The internal combustion engine can in particular be a gasoline engine. Furthermore, the invention relates to a water injection system for an internal combustion engine having an injection valve according to the invention. Background technique [0002] In order to reduce CO2 emissions, it is necessary to optimize the fuel consumption of internal combustion engines, for example by increasing compression or by downsizing concepts in combination with turbocharging. However, at high engine loads, the operation of the internal combustion engine at the optimum operating point with regard to fuel consumption is generally not feasible, since the operation is limited due to the tendency to knock and the high exhaust gas temperature. The measure for reducing the tendency to knock and / or lowering the temperature of the exhaust gas provides for injecting wat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M25/028
CPCF02M25/028F02M55/04F02M25/025F02M2200/9015F02M55/02F02M25/0221Y02T10/12
Inventor E·奥克伦特A·塞茨F·米勒
Owner ROBERT BOSCH GMBH
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