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hydraulic camshaft adjuster

A camshaft adjuster, hydraulic technology, applied in the direction of machine/engine, valve device, mechanical equipment, etc., can solve the problem of complex intermediate locking mechanism

Active Publication Date: 2022-06-03
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] The intermediate locking mechanism is therefore designed to be relatively complex, which entails corresponding costs in the manufacture of the camshaft adjuster.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0031] A camshaft adjuster 1 with a stator 2 and a rotatable relative to the stator 2 is schematically illustrated in the drawings.

[0037] The opposite situation is shown in FIG. 2, wherein the C interface is also initially under pressure and therefore the two control elements 7

[0039] As shown in FIG. 5 , when the internal combustion engine is stopped, the purpose is to ensure that the rotor 3 is in an intermediate position M relative to the stator 2 .

[0042] At the same time, the second control element 8 has no different switching positions and has no influence on the flow of hydraulic fluid. Depend on

[0044] The pressure in the C port is removed according to FIG. 3 . Due to the relative position between the rotor 3 and the stator 2, the control element 8 can

[0045] However, if the control element 7 is already in the area of ​​the chute 7 when the pressure is removed from the C-port, as illustrated in Figure 4,

[0046] Thus, the rotor 3 can be turned back relative to...

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PUM

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Abstract

The invention relates to a hydraulic camshaft adjuster (1), wherein a locking system (7, 8) comprises a first and a second control element (7, 8). In order to move into the intermediate position in a simple manner, the invention provides that the first control element (7) has a first and a second switching position, wherein in the first switching position between the hydraulic pump (P) and the first of the two subchambers A fluid connection can be established between one (B) and between the other second sub-chamber (A) and the storage tank (T), wherein in the second switch position between the hydraulic pump (P) and the two A fluid connection can be established between the second (A) of the two subchambers and a fluid connection can be established between the other first subchamber (B) and the storage tank (T), and the second switching element (8) has no different Switch positions without affecting the flow of hydraulic fluid.

Description

Hydraulic camshaft adjuster technical field The present invention relates to a hydraulic camshaft adjuster comprising: - a stator in which a rotor is rotatably arranged, wherein the rotor has at least one wing, wherein the wing arranged in the hydraulic chamber of the stator such that the first sub-chamber is separated from the second sub-chamber, a central valve that controls the flow of hydraulic fluid into the first sub-chamber and into the second sub-chamber, - a locking system by which the stator is locked in an intermediate position relative to the rotor, wherein the locking system includes including a first control element and a second control element, the first control element and the second control element by applying liquid through the central valve The hydraulic fluid can be held in the unlocked position and the control element can cause the lock when the pressure of the hydraulic fluid is removed stop, wherein the first control element and the second co...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/344
CPCF01L1/3442F01L2001/3443F01L2001/34463F01L2001/34466F01L2001/34469F01L2001/34426F01L2001/34459
Inventor 阿里·巴伊拉克达尔
Owner SCHAEFFLER TECH AG & CO KG
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