Mechanically controllable valve train

A transmission mechanism and mechanical control technology, applied in the direction of machines/engines, mechanical equipment, engine components, etc., can solve the problems of unsatisfactory operating characteristics of the engine, failure to re-establish valve lift, and failure to adjust

Inactive Publication Date: 2017-05-24
KOLBENSCHMIDT PIERBURG INNOVATIONS GMBH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, all of these valve trains have the disadvantage that after manufacture and subsequent assembly, due to manufacturing tolerances, it is not possible to adjust to or re-establish the exact desired valve lift in working condition.
Especially when a uniform valve lift is required for all valves and cylinders of a multi-cylinder internal combustion engine, this can lead to unsatisfactory running characteristics of the engine at small valve lifts

Method used

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  • Mechanically controllable valve train
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Embodiment Construction

[0012] figure 1 An embodiment of the valve train 10 according to the invention is shown, comprising a plurality of gas exchange valves 12 , 14 , 16 , 18 , 20 , 22 , 24 and 26 arranged in a row. In the illustrated case, every two intake valves are assigned to a cylinder of the internal combustion engine. The mechanically controllable valve train 10 has four transmission devices 28, 29, 30, 31, 32, 33 and 34, 35 in the present embodiment, for which two gas exchange valves 12, 14 are assigned respectively; 16, 18; 20, 22; 24, 26. Here, the transport devices 28 , 29 , 30 , 31 , 32 , 33 and 34 , 35 are mounted in a known manner on the cylinder head by means of bearing devices. exist figure 1 The support devices 36 , 38 for supporting the rocker 56 of the transport device 35 are only shown by way of example. In addition, the transmission devices 28 , 29 , 30 , 31 , 32 , 33 and 34 , 35 are operatively connected to the camshaft 40 in a known manner. In addition, each transmission...

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PUM

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Abstract

A mechanically controllable valve drive arrangement includes gas exchange valves each having cylinders associated therewith, a camshaft comprising a peripheral contour, a bearing, an adjusting lever comprising a first end and a second end, a valve lift adjustment device comprising a control shaft which acts on the first end, and a transmission arrangement associated with a respective gas exchange valve. The adjusting lever is supported in the bearing. Each transmission arrangement comprises at least one intermediate lever arrangement comprising an engagement element, and an intermediate lever comprising a working cam, and at least one pivot lever arrangement comprising a pivot lever. The working cam is operatively connected to the pivot lever. The intermediate lever is operatively connected to the peripheral contour. The engagement element is operatively connected to the valve lift adjustment device. The second end of the adjusting lever is operatively connected to the engagement element.

Description

technical field [0001] The invention relates to a mechanically controllable valve train, comprising a plurality of gas exchange valves arranged in a row, which belong to the corresponding cylinder, wherein a transmission device is assigned to a gas exchange valve, wherein the transmission device has at least one an intermediate lever arrangement and at least one rocker arrangement, wherein the intermediate lever of the intermediate lever arrangement has a working surface (Arbeitskurve) for operative connection with the rocker of the rocker arrangement, wherein the intermediate lever is operatively connected to the peripheral contour of the camshaft, In addition, the intermediate lever device has an engagement element which is operatively connected to the valve lift adjustment device. Background technique [0002] Such valve trains are known in detail. For example, DE 10 2006 033 559 A1 and DE 10 2007 022 266 A1 describe valve drives which have an adjustable lift height for ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L13/00
CPCF01L13/0021F01L13/0026F01L13/0063F01L2013/0068F01L2305/00
Inventor M.诺瓦克K.格里姆M.布吕尔
Owner KOLBENSCHMIDT PIERBURG INNOVATIONS GMBH
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