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Rocker arm for valve train in internal combustion engine with device for independent setting/adjust ment of valve play

A technology of valve clearance and valve mechanism, which is applied to valve devices, engine components, machines/engines, etc., and can solve problems such as high manufacturing cost, dependent response time, and complex structure

Inactive Publication Date: 2006-05-10
MOTORENFABRIK HATZ GMBH & CO KG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, these hydraulic systems have the disadvantage that they must obtain pressurized oil from the lubricating oil circuit and their reaction time depends on the increase in oil pressure and oil viscosity
Furthermore, they are complex and expensive to manufacture, so they are not suitable for use in simple internal combustion engines

Method used

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  • Rocker arm for valve train in internal combustion engine with device for independent setting/adjust ment of valve play
  • Rocker arm for valve train in internal combustion engine with device for independent setting/adjust ment of valve play
  • Rocker arm for valve train in internal combustion engine with device for independent setting/adjust ment of valve play

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0043] Depend on figure 1 It can be seen that the rocker arm 1 according to the invention is brought into contact with the valve rod end of the valve rod 4 via the slider 2 . The valve stem 4 is movably mounted in the valve stem guide sleeve 6 . The valve stem 4 is pressed by the valve spring 8 into a position in which the valve head 11 is in sealing contact with the valve seat 12 . The valve spring 8 bears on the one hand on the cylinder head 13 and on the other hand on a spring plate 10 fastened to the valve stem. The rocker arm 1 is fixed on the engine block by a rod 3 . The slider 2 is rotatably mounted in a corresponding notch at one end of the rocker arm 1 and is located between the spacers 7 . On the upper edge of the rocker arm 1 is a fixed bearing of a torsion spring 5 which rotates the slider 2 .

[0044] In the basic position of the slider 2, the flat surface on the slider with the smallest and shortest distance, ie the flat surface with the shortest perpendicul...

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PUM

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Abstract

The invention relates to a reversibly or rotatably supported rocker arm for a valve train of an internal combustion engine, which is equipped with a mechanical valve clearance adjustment element for automatically adjusting or readjusting a predetermined first valve clearance between the rocker arm and the end of the valve stem. , wherein the valve lash adjustment member comprises a hollow cylinder ("slider") rotatably mounted in the rocker arm having some flat surfaces formed around the periphery of the hollow cylinder ("slider") and a The rotating torsion spring and, as long as the predetermined second valve clearance is not reached, the rear edge of that surface relative to the flat surface abuts against the end of the valve stem, preventing automatic rotation of the slider.

Description

technical field [0001] The invention relates to a rocker arm for a valve mechanism of an internal combustion engine, which is used to overcome the spring force of a valve spring for closing a valve to manipulate a valve stem to open the valve. The rocker arm is equipped with a mechanical valve clearance adjustment piece. Background technique [0002] A typical internal combustion engine employs valve trains to control the intake and exhaust of gases from the engine cylinders. The opening and closing of the valves is usually done electromagnetically or purely mechanically, for which purpose the valve stems are actuated via a lever arrangement which is itself controlled by a camshaft driven by the engine crankshaft. In this case, the valve head is disengaged from its valve seat by a generally downward movement of the lever means and associated actuation of the valve stem end. This movement overcomes the return force of a correspondingly arranged valve spring which ensures tha...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F01L1/22F01L1/18
CPCF01L1/183F01L1/22F02B2275/34
Inventor 冈特·坎皮彻勒
Owner MOTORENFABRIK HATZ GMBH & CO KG
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