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Cam phaser for double camshafts, camshaft arrangement and hydraulic system

A technology of camshaft adjusters and double camshafts, which is applied in the lubrication of valve devices, valve accessories, machines/engines, etc., and can solve problems such as wear, heat generation, and life limitation of camshaft adjusters

Inactive Publication Date: 2021-10-12
ECO HLDG 1 GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Here, frictional relative movements occur between opposing components, which lead to a higher degree of wear and to heat generation, so that the service life of the camshaft adjuster with the double camshaft is limited. limit

Method used

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  • Cam phaser for double camshafts, camshaft arrangement and hydraulic system

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Embodiment Construction

[0018] The drawings show only one embodiment and are not to be considered as limiting.

[0019] The camshaft adjuster 10 according to the invention for a double camshaft 12 is constructed according to the drawings. The camshaft adjuster 10 and the double camshaft 12 form a camshaft arrangement 14 .

[0020] With the aid of the camshaft adjuster 10 , the crankshaft of the internal combustion engine and the double camshaft 12 or the double camshaft 12 , ie the first camshaft 16 and the second The angular position of the camshaft 18 varies between one of the two concentric camshafts. The rotation of the dual camshaft 12 delays the opening and closing time point of the gas exchange valve of the internal combustion engine, the so-called control time, so that the internal combustion engine can reflect its optimal power at the corresponding rotational speed. The camshaft adjuster 10 enables stepless adjustment of the double camshaft 12 relative to the crankshaft.

[0021] The firs...

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PUM

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Abstract

A cam phaser for a double camshaft, the cam phaser comprising: a rotor; and a stator, wherein the rotor is a rotatable relative to the stator about a rotor axis of the rotor that is coaxial to a longitudinal axis of the stator, wherein a radial vane of the rotor is positionable between two bars of the stator, wherein the radial vane divides an intermediary space formed between the two bars into two pressure cavities, wherein the double camshaft includes a first camshaft that is configured as a hollow cylinder and a second camshaft that is at least partially received in the first camshaft wherein the first camshaft and the second camshaft are rotatable relative to each other, wherein one of the first camshaft and the second camshaft is connected torque proof with the rotor and another of the first camshaft and the second camshaft is connected torque proof with the stator, wherein the rotor is movable by pressures in the two pressure chambers to cause a rotation of the first camshaft and the second camshaft relative to each other, wherein a hydraulic valve is arranged concentric to the first camshaft, the second camshaft and the rotor, and wherein the hydraulic valve is arranged axially between the second camshaft and the rotor. The invention further relates to a camshaft arrangement and to a hydraulic system.

Description

technical field [0001] The invention relates to a camshaft adjuster for a double camshaft, a camshaft arrangement and a hydraulic system. Background technique [0002] Adjusting devices for adjusting the camshaft in the form of camshaft adjusters are used in modern internal combustion engines to optimize fuel consumption and power values ​​and to vary the opening and closing times of the gas exchange valves so that they can be adjusted at a defined angle The phase relationship between the crankshaft and camshaft is variably shaped within a range. For this purpose, the camshaft adjuster is accommodated integrally in a coupling, via which torque is transmitted from the crankshaft to the camshaft. The camshaft adjuster has a rotor and a stator arranged coaxially with one another, wherein the stator radially includes the rotor. A chamber is provided between the rotor and the stator, which chamber can be impinged with hydraulic fluid, which chamber is divided into interacting p...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/344F01M9/10
CPCF01L1/344F01M9/102F01L2001/34433F01L1/047F01L2001/0473F01L1/053F01L1/3442F01L2001/0475F01L2001/0537F01L2001/34426F01L2810/02
Inventor 迪特玛·舒尔茨安德烈·赛登施万
Owner ECO HLDG 1 GMBH
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