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Roller for roller plunger of high pressure fuel pump, roller plunger, high pressure fuel pump, and internal combustion engine

A technology of high-pressure fuel pumps and rollers, which is applied in the direction of fuel injection pumps, engine components, machines/engines, etc., can solve the problems of high-pressure fuel pumps such as high wearability, and achieve the effect of reducing wear

Inactive Publication Date: 2016-09-21
CONTINENTAL AUTOMOTIVE GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

These effects lead to a higher susceptibility to wear in the high-pressure fuel pump

Method used

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  • Roller for roller plunger of high pressure fuel pump, roller plunger, high pressure fuel pump, and internal combustion engine
  • Roller for roller plunger of high pressure fuel pump, roller plunger, high pressure fuel pump, and internal combustion engine
  • Roller for roller plunger of high pressure fuel pump, roller plunger, high pressure fuel pump, and internal combustion engine

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Embodiment Construction

[0043] figure 1A perspective illustration of a detail from an internal combustion engine 10 with a crankshaft 12 is shown.

[0044] figure 2 Shows figure 1 A perspective illustration of a crankshaft 12 is shown in FIG. 1 , which has a plurality of connecting rods 13 and on which a high-pressure fuel pump 14 acts.

[0045] image 3 shown with figure 2 A cross-sectional view of the crankshaft 12 of the high-pressure fuel pump 14 .

[0046] The crankshaft 12 has two cams 16 which, as a result of the rotation of the crankshaft 12 about its crankshaft axis of rotation 18, periodically contact the roller plungers 20 of the high pressure fuel pump 14 and in the process make them accessible to the roller plungers 20. The pump piston 22 in operative contact moves up and down.

[0047] The roller 26 of the roller plunger 20 directly contacts the crankshaft surface 24, said roller 26 being configured as a composite roller 28, as will be incorporated later. Figure 4 as described...

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Abstract

The invention relates to a roller (26) for a roller plunger (20) of a high pressure fuel pump (14), which is designed as a composite roller (28) and has a first material (40) for forming a first composite roller region (38) and a second material (44) for forming a second composite roller region (42). The first material (40) and the second material (44) are connected to each other to form a composite roller volume element (46) and the first material (40) is lighter than the second material (44). The invention further relates to a roller plunger (20) having the roller (26), a high pressure fuel pump (14) having the roller plunger (20), and an internal combustion engine (10), which has a crankshaft (12) and the high pressure fuel pump (14).

Description

technical field [0001] The invention relates to a roller for a roller plunger of a high-pressure fuel pump, a roller plunger equipped with a roller of this type, a high-pressure fuel pump with said roller plunger and an internal combustion engine with a crankshaft comprising a high-pressure fuel pump. Background technique [0002] The high-pressure fuel pump is charged with fuel to be fed at high pressure to the combustion chamber of the internal combustion engine and is usually configured as a piston pump which compresses the fuel located in the pressure space by a back and forth translational movement and thereby generates high pressure in the fuel. For example, in the case of high-pressure fuel pumps for gasoline internal combustion engines, the fuel is loaded at a pressure of 200 bar to 250 bar, while for high-pressure pumps for diesel internal combustion engines, the fuel is loaded at a pressure of 2000 bar to 2500 bar . [0003] The shaft is used to drive the translat...

Claims

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Application Information

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IPC IPC(8): F02M59/10
CPCF02M59/102F02M2200/9007F02M2200/9015F02M2200/9053F02M2200/9046F16C13/00F04B9/04F04B17/05
Inventor A.埃德雷尔
Owner CONTINENTAL AUTOMOTIVE GMBH