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Tappet

A housing, stroke technology, applied in the direction of fuel injection pump, fuel injection device, mechanical equipment, etc., can solve the problems of no longer use, limited use, manufacturing and assembly limits, etc.

Pending Publication Date: 2018-10-09
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Tappets used hitherto can only be used to a limited extent in this case, or can no longer be used at all
The usual thickening of the sheet metal to withstand the occurring loads (deflection) encounters production and assembly limits in this case

Method used

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  • Tappet
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Examples

Experimental program
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Effect test

Embodiment Construction

[0015] exist figure 1 , figure 2 shows a tappet 1 for a high-pressure injection pump or for a guide close to the pump for a high-pressure injection pump.

[0016] The tappet 1 has a substantially hollow cylindrical housing 2 made of sheet steel. Arranged on the drive side 3 of the housing 2 is a roller 5 for running the cam against which is supported on the pin 4 via an intermediate ring 24 . pin 4 as figure 1 The bearing is shown in two set-back flats 7 , which emerge from the drive-side end face 6 of the housing 2 .

[0017] The output side 8 of the housing 2 is penetrated by a solid and free-standing plate 9 . If you can figure 1 As can be seen in , the plate 9 rests with its upper side 10 on the bowstring-shaped lower web 11 of the flat part 7 . The underside 12 of the plate 9 has a central abutment 16 for the pump piston.

[0018] What stands out is the solid construction of the plate 9 . In this case, it is separated from the semi-finished product like a profile...

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PUM

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Abstract

The invention provides a tappet (1) for transferring stroke to a pump piston of a fuel pump of an internal combustion engine. The tappet has a housing (2) the drive side (3) of which has a roller (5)supported on a bolt pin (4). The bolt pin is supported in two flat portions (7) retracted from the end side (6) of the drive side of the housing, wherein the driven side (8) of the housing (2) is penetrated by a separate plate (9) whose top side (10) is abutted against the arcuate lower lintels (11) of the flat portions (7) and whose bottom side (12) has an abutt portion (16) for the pump piston.The plate (9) is a solid part. The solid part has a material thickening portion (13) extending from the flat portion to the flat portion in a beam manner on the bottom side (12). The side walls (14, 15) of the material thickening portion (13) taper in the direction of the driven side (8), and the abutt portion (16) is foremd in the longitudinal center of the material thickening portion (13).

Description

technical field [0001] The invention proposes a tappet, in particular for transmitting a stroke to a pump piston of a fuel pump of an internal combustion engine, the tappet has a housing, the drive side of which has a pin mounted on a pin for letting The periodic stroke generator rests against the running roller, the pin is supported in two flats set back from the end face of the drive side of the housing, wherein the driven side of the housing is penetrated by a separate plate , the upper side of the plate bears against the bowstring-shaped lower web of the flat, and the lower side of the plate bears itself against the pump piston. Background technique [0002] A tappet of this type is derived from DE 10 2009 013 130 A1. The plate on the driven side for abutting against the pump piston or other driven parts is a sheet metal part produced by stamping and bending technology. Due to the increased injection pressure, the load on the tappet also increases. Hitherto used tappe...

Claims

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Application Information

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IPC IPC(8): F02M59/10
CPCF02M59/102F04B1/00F04B1/0413F04B1/0417F04B1/0426
Inventor 诺伯特·盖耶马可·容克尔
Owner SCHAEFFLER TECH AG & CO KG
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