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Tappet tip geometry for a pressure control valve

A technology of adjusting valve and push rod, applied in the direction of valve operation/release device, lift valve, valve details, etc., can solve problems such as drive unit imbalance, and achieve the effect of optimizing noise characteristics

Inactive Publication Date: 2016-02-24
ROBERT BOSCH GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

exist Figure 3b , although the valve ball 6 can again be to the left or to the right, thus slightly offset in the radial direction with respect to the central axis 2d, due to the spherical shape of the depression 12, the valve ball can again be pulled under an axial load to the central axis 2d or change the axial position of the push rod tip during a radial movement and thus deadjust the magnetic circuit of, for example, the drive unit

Method used

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  • Tappet tip geometry for a pressure control valve
  • Tappet tip geometry for a pressure control valve
  • Tappet tip geometry for a pressure control valve

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Embodiment Construction

[0025] refer to Figure 4 An exemplary configuration of the concave shape of the push rod tip according to the present invention is further shown.

[0026] The plunger tip 14 is shown in detail with an embossing geometry with an oblate embossment, which is diametrically configured in such a way that the contact between the valve ball and the plunger tip 14 in the recess 12 is relative to the remaining The radial tolerance is always in the region of the flat, thus in the first region 16a. As a result, a radial movement 20 a , ie a movement 18 a substantially along the plane of the region 16 a without affecting the axial position of the plunger element 2 , can be achieved. Outside this first region 16a a second region 16b is arranged, for example continuing the geometry in a similar manner as in the case of ball embossing. Depending on which boundary conditions of the spherical imprint are to be maintained, the connection geometry of the second region 16 b can be configured eg...

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Abstract

The invention relates to a tappet element (2), in particular for a pressure control valve (4), comprising a tappet body (2a), in particular an elongated tappet body. The tappet body has a first side (2b), a second side (2c), and a centre axis (2d). A tappet tip (14) is formed on the first side (2a), which tappet tip is designed to contact a valve ball (6). A driving device (10) for the tappet element (2) can be provided on the second side (2c). The tappet tip (14) has a recess (12) for contacting a valve ball (6). The tappet element is characterised in that the recess (12) has a first region (16a) and a second region (16b), the two regions (16a, b) being arranged concentrically with respect to the centre axis (2d); and a valve ball (6) being movable (18a) on the surface (22a) of the recess (12) substantially in a radial direction (20a) perpendicular to the centre axis (2d) in the first region (16a); and a valve ball (6) being movable (18b) on the surface (22b) of the recess (12) substantially in a combined motion both in the radial direction (20a) and in an axial direction (20b) in the second region (16b).

Description

technical field [0001] The invention relates to engine technology for vehicles. In particular, the invention relates to pressure regulating valves for diesel injection systems. Furthermore, the invention relates in particular to a novel plunger element or a novel plunger tip geometry for a pressure regulating valve. Background technique [0002] Pressure regulating valves are used in particular in engine technology within the framework of diesel engines for direct fuel injection. Pressure regulating valves are used especially within the framework of common rail diesel systems. Here, a high-pressure pump is used to maintain the fuel pressure in the distributor line. The pressure regulating valve is now provided to regulate and maintain the pressure in the rail in accordance with the setpoint pressure specified in the controller. In most cases, the valve ball is pressed into the valve seat by means of magnetic force to close the valve. [0003] For regulating and limiting...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M63/00F16K31/06F16K17/04
CPCF01L1/14F02M63/0036F02M63/0052F16K1/36F16K31/0665F16K17/0406
Inventor E·维耶
Owner ROBERT BOSCH GMBH