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Length-adjustable connecting rod with hydraulic control device

A technology of control device and hydraulic control valve, applied in the direction of connecting rod, engine control, shaft and bearing, etc., can solve the problems of engine knocking, quiet operation, engine parts damage, etc., to reduce thermal load and improve running time Effect

Inactive Publication Date: 2020-04-14
IWIS MOTORSYSTEME GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As the compression ratio increases, the thermal efficiency increases, but too high a compression ratio may lead to unintended spontaneous combustion of the piston engine
This premature combustion of the fuel not only leads to unquiet running and so-called engine knocking, but can also cause damage to components of the engine

Method used

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  • Length-adjustable connecting rod with hydraulic control device
  • Length-adjustable connecting rod with hydraulic control device
  • Length-adjustable connecting rod with hydraulic control device

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0024] exist figure 1 The length-adjustable link 1 shown in the schematic diagram in , comprises two link parts 2 , 3 that are telescopically movable relative to each other. exist figure 1 The lower connecting rod part 2 arranged below in the diagram of the length-adjustable connecting rod 1 has a large connecting rod eye 4 with which the length-adjustable connecting rod 1 is supported on the piston engine crankshaft (not shown). For this purpose, a bearing shell 5 is also arranged on the lower connecting rod part 2 , which forms a large connecting rod eye with the lower region of the lower connecting rod part 2 , which is likewise designed as a bearing shell. 4.

[0025] The bearing housing 5 and the lower connecting rod part 2 are connected to one another by means of connecting rod bolts (shown schematically in dashed lines). The upper connecting rod part 3 has a connecting rod head 6 with a small connecting rod eye 7 accommodating a piston pin (not shown) of a reciproca...

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PUM

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Abstract

The invention relates to a length-adjustable connecting rod with a hydraulic control device, wherein the connecting rod has a first connecting rod hole for accommodating a piston pin and a second connecting rod hole for accommodating a crankshaft journal, wherein the distnace between the piston pin and the crankshaft journal can be adjusted in the longitudinal direction of the connecting rod by means of the hydraulic control device with a hydraulic control valve. The hydraulic control device has a control cylinder, a control slide block which is movably guided in the control cylinder and can be applied with a pressure, and at least one exhaust valve which can be controlled by the control slide block. The exhaust valve is connected with an exhaust channel without over-pressure so as to output the exhausted hydraulic medium to an environment. The invention further relates to application of the length-adjustable connecting rod with the hydraulic control device, and a corresponding pistontype engine.

Description

technical field [0001] The invention relates to a length-adjustable connecting rod for a piston engine, wherein the connecting rod has a first connecting rod for receiving a piston pin and a second connecting rod for receiving a crankshaft journal, wherein by means of The hydraulic control device of the hydraulic control valve can adjust the distance between the piston pin and the crankshaft journal in the longitudinal direction of the connecting rod, and wherein the hydraulic control valve has a control cylinder and a movable guide in the control cylinder can be applied with pressure control slider and at least one discharge valve. Furthermore, the invention relates to the use of such a length-adjustable connecting rod and to a piston engine with a length-adjustable connecting rod. Background technique [0002] In internal combustion engines with reciprocating pistons, efforts are made to vary the compression ratio during operation and to adapt it to the corresponding oper...

Claims

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Application Information

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IPC IPC(8): F02B75/04F16C7/06
CPCF02B75/045F02D15/02F16C7/06
Inventor 凯·阿伦斯马丁·博登施泰纳佐尔坦·里巴斯特芬·拉茨马尔特·黑勒
Owner IWIS MOTORSYSTEME GMBH & CO KG
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