Unlock instant, AI-driven research and patent intelligence for your innovation.

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

A technology of injection valve and water injection, applied in the direction of internal combustion piston engine, charging system, combustion engine, etc., can solve problems such as damage and icing, and achieve the effect of suppressing eddy current, increasing flow speed, and accelerating emptying.

Pending Publication Date: 2021-11-05
ROBERT BOSCH GMBH
View PDF2 Cites 0 Cited by
  • 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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • 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

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] Depend on figure 1 Injection valve 1 of water injection system 50 of internal combustion engine 100 is shown, which comprises annular solenoid coil 2 for acting on a reciprocating armature 3 , which is connected to 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 for releasing and closing the 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 the valve closing...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an injection valve for a water injection system of an internal combustion engine. The injection valve comprises an annular electromagnetic coil for acting on a reciprocating armature which is connected to a valve element, and a hollow cylindrical core which is surrounded at least in sections by the solenoid coil and is formed on or connected to an inlet connection via which the injection valve can be supplied with water, wherein a body is inserted into the inlet connection and is penetrated by at least one flow channel in the axial direction, and the flow channel formed in the body defines an inlet opening for supplying water to the injection valve. According to the invention, a flange is formed on the inlet connection piece at the inlet-side end of the inlet connection piece, and the flange protrudes outwards in the radial direction, wherein an edge is formed on the body at the inlet-side end of the body, the edge protrudes outward from the body in the radial direction, and the edge of the body encompasses the flange of the inlet connection pipe. 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 especially 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 reducing the temperature of the exhaust gas is provided as water injectio...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): F02M25/028
CPCF02M25/028F02M25/0221Y02T10/12
Inventor E·奥克伦特A·塞茨F·米勒
Owner ROBERT BOSCH GMBH