Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Valve assemblies and injection valves for injection valves

A technology of valve components and injection valves, which is applied in the field of solenoid injection valves, fuel injection valves, and fluid injection valves, and can solve problems such as needle bounce, low stiffness, and buckling

Active Publication Date: 2021-07-06
VTESCO TECH GMBH
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the spring needs to be a low stiffness spring and has a tendency to buckle, causing the needle to bounce

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
  • Valve assemblies and injection valves for injection valves
  • Valve assemblies and injection valves for injection valves
  • Valve assemblies and injection valves for injection valves

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0036] Such as figure 1 with 2 The fluid injection valve 1 shown in is particularly suitable for metering fuel to combustion engines. However, the invention can also be used for other types of injection valves.

[0037] Injection valve 1 includes a valve assembly 3 . The valve assembly 3 comprises a valve body 4 having a central longitudinal axis L. As shown in FIG. The housing 6 is arranged partially around the valve body 4 .

[0038]The valve body 4 includes a chamber 9 . The chamber 9 has a fluid outlet portion 7 . The fluid outlet portion 7 communicates with the fluid inlet portion 5 provided in the valve body 4 . The fluid inlet portion 5 and the fluid outlet portion 7 are in particular positioned at opposite axial ends of the valve body 4 . Chamber 9 receives valve needle 11 . The valve needle 11 includes a needle shaft and a sealing ball welded to the end of the needle shaft.

[0039] In the closed position of the valve needle 11 , the sealing ball rests sealin...

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

Valve assemblies and injection valves for injection valves. A valve assembly (3) for an injection valve (1), comprising: a valve body (4) with a fluid outlet portion (7); a valve needle (11), which in a closed position prevents flow through the fluid outlet portion (7) fluid flow; calibration spring (18), which axially biases the valve needle (11) in the closing direction towards the fluid outlet portion (5); the armature (23) of the electromagnetic actuator unit (19); and the armature stop (27). The armature stopper (27) includes an armature support portion (31), a circumferential side wall (35) and a circumferential clamping portion (36). The circumferential clamping portion (36) has a circumferential groove (37) formed by a base (39), an inner wall (40) and an outer wall (41), said inner wall being part of a circumferential side wall (35), said The outer wall forms a press-fit area for press-fitting the armature stop (27) into the valve body (4).

Description

technical field [0001] The present disclosure relates to valve assemblies for fluid injection valves and to fluid injection valves, such as fuel injection valves for vehicles. The present disclosure particularly relates to solenoid injection valves. Background technique [0002] Such injection valves must be able to meter fluid even at high fuel pressures. One design that ensures this is the "free lift" design, which is eg disclosed in document WO 2015 / 052281 A1. Depending on the design, the armature of the electromagnetic actuator unit travels approximately a "pre-travel gap" or "free lift gap" before it engages the needle to open the injector. Therefore, kinetic energy is accumulated before actually opening. [0003] Needle bounce events or post-injection are problematic for injection valves with "free lift" designs, as well as injection valves with other designs, because they result in increased emissions. Sometimes an anti-bounce armature spring is placed under the a...

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
Patent Type & Authority Patents(China)
IPC IPC(8): F02M51/06
CPCF02M51/0671F02M51/0685F02M2200/304F02M2200/8061F02M2200/9015F02M2200/9053F02M51/0614
Inventor M.格兰迪S.菲利皮F.伦齐V.波利多里
Owner VTESCO TECH GMBH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com