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adjustable camshaft

A camshaft, adjustable technology, applied to cams, belts/chains/gears, valve devices, etc., to optimize installation space, easy assembly, and achieve cost advantages

Active Publication Date: 2020-08-11
MAHLE INT GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In particular, this is also of great importance, since the cam nailed into the inner shaft can only be easily moved if the pin passes into the corresponding elongated hole of the outer shaft without friction, i.e. without touching the edge of the corresponding elongated hole. regulated

Method used

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Embodiment Construction

[0016] according to Figure 1 to Figure 4 , the adjustable camshaft 1 according to the invention comprises an inner shaft 2 and an outer shaft 3 arranged coaxially therewith. For example, the camshaft 1 can be installed in an internal combustion engine 4 of a motor vehicle. Furthermore, the camshaft 1 comprises a first cam 5 which is non-rotatably connected to the inner shaft 2 by means of a pin 6 , and a second cam 7 which is non-rotatably connected to the outer shaft 3 . According to the invention, at least two bearing elements 8, 9 fixedly connected to the outer shaft are provided, between which the first cam 5 is arranged, and which mount and fix the first cam 5, and via The first cam 5 also fixes the inner shaft 2 in the axial direction relative to the outer shaft 3 . when looking more closely Figure 1 to Figure 4 , it can be seen that the pin 6 passing through the inner shaft 2 has no play and it is also connected to the first cam 5 without play. An elongated hole 10 ...

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Abstract

The invention relates to an adjustable camshaft (1) having: an inner shaft (2) and an outer shaft (3) arranged coaxially therewith; a first cam (5) non-rotatably connected to the inner shaft (2 ); the second cam (7), which is non-rotatably connected to the outer shaft (3); it is important for the invention that at least two bearing elements (8, 9) fixedly connected to the outer shaft (3) are provided ), the first cam (5) is arranged between said bearing elements, and said bearing elements fix the first cam (5), via which also the inner shaft (2) is fixed relative to the outer shaft (3) on the shaft direction.

Description

technical field [0001] The invention relates to an adjustable camshaft having an inner shaft and an outer shaft arranged coaxially therewith. Furthermore, the invention relates to an internal combustion engine having such a camshaft. Background technique [0002] Universal camshafts are well known and are especially used for variability with respect to the valve opening duration. In order to be able to obtain long-term reliable operation, it is necessary to install both the inner shaft and the outer shaft in the axial direction. In particular, this is also of great importance, since the cam nailed into the inner shaft can only be easily moved if the pin passes into the corresponding elongated hole of the outer shaft without friction, i.e. without touching the edge of the corresponding elongated hole. is regulated. To adjust such an adjustable camshaft, a phaser with a rotor and a stator is usually used, wherein the rotor is fixedly connected to the inner shaft and fixedly...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/047F01L1/344
CPCF01L1/047F01L1/344F01L1/34413F01L2001/0476F01L2001/34486F01L2001/0473F16H53/04
Inventor 托马斯·弗伦德尔米夏埃尔·克赖斯格尤尔根·隆梅尔斯特凡·斯泰彻尔
Owner MAHLE INT GMBH