Device for the variable adjusting of the control timing of gas exchange valves of an internal combustion engine

A technology of internal combustion engine and ventilation valve, which is applied to mechanical equipment, valve devices, engine components, etc., can solve problems such as no longer available for use, and achieve the effect of improving phase adjustment speed, avoiding phase fluctuation, and high adjustment speed.

Active Publication Date: 2012-10-03
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The disadvantage of the embodiment shown is that, due to the tensioned pressure spring, the emptying of the volume accumulator starts already at a point in time when the volume flow supplied by the pressure medium pump i

Method used

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  • Device for the variable adjusting of the control timing of gas exchange valves of an internal combustion engine
  • Device for the variable adjusting of the control timing of gas exchange valves of an internal combustion engine
  • Device for the variable adjusting of the control timing of gas exchange valves of an internal combustion engine

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Embodiment Construction

[0033] exist figure 1 An internal combustion engine 1 is depicted in , wherein a piston 3 seated on a crankshaft 2 in a cylinder 4 is shown. In the embodiment shown, the crankshaft 2 is connected to the intake camshaft 6 or the exhaust camshaft 7 via a traction mechanism transmission 5 in each case, wherein the first and second devices 11 can bring about the connection of the crankshaft 2 to the camshaft 6, 7 relative rotation between. The cams 8 of the camshafts 6 , 7 actuate one or more intake gas exchange valves 9 or one or more output gas exchange valves 10 . Likewise, it can also be provided that only one of the camshafts 6 , 7 is equipped with the device 11 or that only one camshaft 6 , 7 is provided which is provided with the device 11 .

[0034] figure 2 and image 3 A first embodiment of the device 11 according to the invention is shown, wherein the phase adjustment device 11a and the hydraulic circuit are shown schematically in plan view or in cross section. Th...

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Abstract

The invention relates to a device (11) for the variable adjusting of the control timing of gas exchange valves (9, 10) of an internal combustion engine (1) with a drive element (13), an output element (14), at least one pressure chamber (23) and a volume accumulator (31), wherein the output element (14) is arranged in a rotatable manner to the drive element (13), and the pressure chamber (23) is bordered at least partially by these components (13, 14), wherein a phase position between the output element (14) and the drive element (13) can be variably adjusted by the pressure medium supply to or pressure medium removal from the pressure chamber (23), wherein pressure medium lines (25a, b, p) are provided by means of which the pressure medium can be supplied to the pressure chamber (23) or removed therefrom, wherein the volume accumulator (31) has at least one housing (32); and a displaceable separating element (33) therein that separates a supply chamber (34), which connects to one of the pressure medium lines (25a, b, p), from a ventilated complementary space (35), wherein the separating element (33) is displaced in the housing (32) by the admission of the pressure medium in the supply chamber (34) in such a way that the volume of the supply chamber (34) increases at the expense of the complementary space (35).

Description

technical field [0001] The invention relates to a device for variably adjusting the valve timing of a gas exchange valve of an internal combustion engine, the device having a drive element, a driven element, at least one pressure chamber and a volume accumulator, wherein the driven element is capable of Arranged in a rotational manner relative to the driver, and the pressure chamber is delimited at least partially by these components, wherein the phase position (Phasenlage) between the driven part and the driver can be obtained by feeding pressure medium into the pressure chamber or by removing pressure medium from the pressure chamber. chamber output to be variably adjustable, wherein pressure medium lines are provided, via which pressure medium can be supplied to the pressure chamber or discharged from the pressure chamber, wherein the volume accumulator has at least one housing and a displaceable partition in the housing, which separates a reserve chamber communicating with...

Claims

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Application Information

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IPC IPC(8): F01L1/344F15B1/24
CPCF01L1/3442F01L2001/34446F01L2001/34469
Inventor 安德烈亚斯・施特劳斯库尔特・基尔斯滕
Owner SCHAEFFLER TECH AG & CO KG
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