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Longitudinally-adjustable connecting rod with cylinder-piston unit with rotational locking

An anti-rotation, connecting rod technology, applied to the second connecting rod, the connecting rod of the joint, can solve the problems of expensive cylinder hole sealing and high production cost, and achieve the effect of minimizing the remaining gap and avoiding waste

Active Publication Date: 2020-02-14
IWIS MOTORSYSTEME GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Independent of the cross-sectional profile of the piston and cylinder, the disadvantage of this type of anti-twist is high production costs and expensive sealing of the cylinder bore

Method used

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  • Longitudinally-adjustable connecting rod with cylinder-piston unit with rotational locking
  • Longitudinally-adjustable connecting rod with cylinder-piston unit with rotational locking
  • Longitudinally-adjustable connecting rod with cylinder-piston unit with rotational locking

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Embodiment Construction

[0042] exist figure 1An internal combustion engine (gasoline engine) 1 is schematically illustrated in . The internal combustion engine 1 has three cylinders 2.1, 2.2 and 2.3, in each cylinder a reciprocating piston 3.1, 3.2, 3.3 moves up and down. Furthermore, the internal combustion engine 1 includes a crankshaft 4 which is rotatably mounted via crankshaft bearings 5.1, 5.2, 5.3, 5.4. Crankshaft 4 is connected to associated reciprocating pistons 3.1, 3.2 and 3.3 via connecting rods 6.1, 6.2 and 6.3, respectively. For each connecting rod 6.1, 6.2 and 6.3, the crankshaft 4 has an eccentrically arranged crankshaft journal 7.1, 7.2 and 7.3. The large connecting rod eyelets 8.1, 8.2 and 8.3 of the connecting rods 6.1, 6.2, 6.3 are respectively supported on the associated crankshaft journals 7.1, 7.2 and 7.3. The small connecting rod eyelets 9.1, 9.2 and 9.3 of the connecting rods 6.1, 6.2, 6.3 are respectively supported on the piston pins 10.1, 10.2 and 10.3 and are thus pivot...

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Abstract

The invention relates to a longitudinally-adjustable connecting rod for an internal combustion engine. The rod comprises a first connecting rod part, a second connecting rod part and at least one cylinder-piston unit for controlling the first connecting rod part relative to the second connecting rod part. The cylinder-piston unit comprises a housing with a cylinder bore, an adjusting piston that can be longitudinally moved in the cylinder bore, at least one pressure chamber provided in the cylinder bore, and a rotation-lock device. The rotation-lock device for fixing the angular position of the piston pin to the crankshaft journal is arranged on the first connecting rod part and extends with at least one securing arm in the longitudinal direction along a guide on the second connecting rodpart. The invention also relates to an internal combustion engine comprising said type of longitudinally-adjustable connecting rod and to the use of said type of cylinder-piston unit for a longitudinally-adjustable connecting rod of an internal combustion engine.

Description

technical field [0001] The invention relates to a length-adjustable connecting rod for an internal combustion engine with a first connecting rod part, a second connecting rod part and at least one cylinder-piston unit for adjusting the first connecting rod part relative to the second connecting rod part. A connecting rod part, wherein the cylinder-piston unit comprises: a housing with a cylinder bore, an adjusting piston arranged longitudinally movable in the cylinder bore, at least one pressure chamber arranged in the cylinder bore, and an anti-twist. The invention also relates to an internal combustion engine with such a length-adjustable connecting rod and to the use of a cylinder-piston unit for a length-adjustable connecting rod for an internal combustion engine. Background technique [0002] The thermal efficiency of an internal combustion engine, especially a gasoline engine, depends on the compression ratio ε, ie the ratio of the total volume before compression to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02B75/04
CPCF02B75/045F02D15/02F15B15/1414F16C7/06
Inventor 斯蒂芬尼·雷姆凯·阿伦斯麦特·黑勒佐尔坦·里巴
Owner IWIS MOTORSYSTEME GMBH & CO KG
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