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Valve train for internal combustion engine

A technology of valve mechanism and internal combustion engine, which is applied in the direction of machines/engines, mechanical equipment, engine components, etc. It can solve the problems of inaccurate flushness between the concave part and the conversion pin, so as to avoid clamping and deformation, avoid shear stress, and short response the effect of time

Inactive Publication Date: 2010-05-26
MAN ENERGY SOLUTIONS SA
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage of this solution is that the adjustment force of the switching part acting in the axial direction of the lever axis tries to force the first and second rocker apart in the axial direction, especially if the recess does not correspond to the switching pin. when exactly level with each other
Thus, disadvantageously, precise alignment of the shift pin and the recess accommodating it is required

Method used

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  • Valve train for internal combustion engine
  • Valve train for internal combustion engine
  • Valve train for internal combustion engine

Examples

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Embodiment Construction

[0053] figure 1 A valve train according to an embodiment of the invention is shown in a perspective view. It comprises a main rocker 10 for actuating a valve lifter 1 and a switching rocker 20 adjacent thereto. The main rocker and switching rocker are mounted rotatably about the lever axis 2, wherein the main rocker 10 is counter to the direction of rotation D by the valve springs acting on the valve lifters 1 in a manner not shown in detail ( Figure 4 ) is preloaded. In the same way, the switching rocker 20 is prestressed against the direction of rotation D by means of a second return element 22 comprising a compression spring, so that both rockers 10 , 20 are prestressed against the camshaft 4 .

[0054] Here, the main rocker 10 utilizes rollers 12 ( image 3 ) is pressed against the first cam 11 of the camshaft 4 on which the roller 12 rolls, while the switching rocker 20 is pressed against the second cam 21 of such a camshaft 4 with the roller 23 in a corresponding man...

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Abstract

The invention relates to a valve mechanism for an internal combustion engine, particularly for a diesel motor. The invention comprises the following components: a main swinging rod for operating a valve lifter; wherein the main swinging rod can rotate in rotary direction of an axial cord through a first cam of a cam axle; a conversion swinging rod, which can rotate around the axial cored through a second cam of the cam axle that off sets the first cam; a switch component, and in its active status (Figure 4), the conversion swinging rod makes the main swinging rod rogether winding the pole axial cord, wherein, the switch component comprises a conversion pin and a stop dog; the stop dog is set one of the main swinging rod and the conversion swinging rod, and makes the other of the two be guided movably in slip direction in such a way that the conversion pin plays a role of maing the main swinging rod rotate together with the conversion swinging rod. Wherein, the slip direction (5) is vertical to the pole axial core roughly.

Description

technical field [0001] The invention relates to a valve train for an internal combustion engine, in particular a diesel engine, according to the preamble of claim 1, an internal combustion engine with such a valve train, and a method for adjusting such a valve institutional approach. Background technique [0002] In valve trains with rocker levers (also called follower levers) in this classification, the valve train is rotated about the rod axis by means of the cam of the camshaft, and at the same time the valve lifters (Ventilstoessel) or pushrods are actuated for the The intake or exhaust valves of the internal combustion engine open against a restoring force, for example of a valve spring. [0003] In this case, the valve opening time is generally structurally determined by the cam profile, which can be specified as a rotational angle between 0° and 360°. Valve opening time fundamentally affects engine characteristics. [0004] Various valve trains with so-called cam a...

Claims

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Application Information

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IPC IPC(8): F01L1/18
CPCF01L13/0036F01L2105/00F01L2820/033F01L1/185F01L1/267F01L2305/00F01L1/18
Inventor R·霍尔斯坦H·英坎普
Owner MAN ENERGY SOLUTIONS SA
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