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Apparatus for variably adjusting the control times of gas exchange valves in an internal combustion engine

A valve phase, internal combustion engine technology, applied to valve devices, accumulator devices, fluid pressure actuating devices, etc., can solve problems such as falling and inability to adjust speed, reduce quality, improve hydraulic rigidity, and stabilize peaks The effect of consumption

Inactive Publication Date: 2012-08-01
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This can result in the adjustment process not being able to be carried out or the adjustment speed being significantly reduced

Method used

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  • Apparatus for variably adjusting the control times of gas exchange valves in an internal combustion engine
  • Apparatus for variably adjusting the control times of gas exchange valves in an internal combustion engine
  • Apparatus for variably adjusting the control times of gas exchange valves in an internal combustion engine

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Embodiment Construction

[0035] figure 1 An internal combustion engine 1 is sketched in , wherein a piston 3 mounted on a crankshaft 2 is shown in a cylinder 4 . In the embodiment shown, the crankshaft 2 is connected to the inlet camshaft 6 or the outlet camshaft 7 via a traction mechanism transmission 5 in each case, wherein a first device and a second device 10 are responsible for the connection between the crankshaft 2 and the camshafts 6, 7. the relative twist between them. The device 10 comprises a respective hydraulic adjustment device 10 a, b, c and a pressure medium supply device 37 . The cams 8 of the camshafts 6, 7 operate one or more inlet gas exchange valves 9a or one or more outlet gas exchange valves 9b. Likewise, only one camshaft 6 , 7 can be equipped with the device 10 or only one camshaft 6 , 7 equipped with the device 10 can be provided.

[0036] image 3 A first embodiment of a device 10 according to the invention is shown, which has a pressure medium supply device 37 , adjustm...

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Abstract

The invention relates to an apparatus (10) for variably adjusting the control times of gas exchange valves (9a, b) in an internal combustion engine (1). Said apparatus (10) comprises a driving element (22), an output element (23), at least one pressure chamber (35, 36), a pressurized medium supply device (37), and at least one pressure accumulator (43). The pressurized medium supply device (37) allows pressurized medium to be fed to or discharged from the at least one pressure chamber (35, 36). A phase angle of the output element (23) relative to the driving element (22) can be changed by supplying or discharging pressurized medium to or from the pressure chamber (35, 36). The pressure accumulator (43) encompasses a movable element (45) that has a first pressure surface (47) which partially delimits a storage space (49). The storage space (49) is connected to the pressurized medium supply device (37). The movable element (45) can be moved against the force of an energy store (46) by pressurizing the storage space (49).

Description

technical field [0001] The invention relates to a device for variable adjustment of the timing of gas exchange valves of an internal combustion engine, the device having a drive element, a driven element, at least one pressure chamber, a pressure medium supply and at least one pressure accumulator, wherein, At least one pressure chamber can be supplied with pressure medium or discharged from the pressure medium by means of the pressure medium supply device, wherein by supplying pressure medium to the pressure chamber or discharging pressure medium from the pressure chamber, the output part can be changed relative to the transmission part. , wherein the pressure accumulator has a movable element with a first pressure surface partially delimiting a storage chamber, wherein the storage chamber is connected to a pressure medium supply, wherein the pressurization of the storage chamber can Pushes the movable element against the force of the accumulator. Background technique [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F01L1/34F01L1/344
CPCF01L1/3442F01L1/34F15B1/024F01L2001/34446F15B15/12
Inventor 约亨·奥克特安德烈亚斯·亨普夫林
Owner SCHAEFFLER TECH AG & CO KG
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