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Internal combustion engine

A technology of internal combustion engine and crank-link mechanism, which is applied in the direction of mechanical equipment, engine components, machines/engines, etc., can solve the problems of friction loss amplification and friction loss, and achieve the effect of improving the acoustic effect

Active Publication Date: 2014-04-30
AUDI AG
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  • Summary
  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, these measures cannot be easily transferred to internal combustion engines with multi-link crank linkages, because the inertial forces generated there are not purely oscillating but rotational, and on the other hand the multi-link crank The friction losses of the linkage are already greater than those of conventional internal combustion engines and are amplified to unacceptable levels due to the additional compensation shafts

Method used

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Embodiment Construction

[0024] figure 1 A perspective view of a part of an internal combustion engine 1 is shown, which is an in-line internal combustion engine, more precisely a four-stroke-four-cylinder-in-line internal combustion engine. The internal combustion engine 1 has a crankshaft 2 and four pistons 3 , each piston being movably mounted in one of four cylinders (not shown) of the internal combustion engine 1 . Each of the four pistons 3 is connected to the crankshaft 2 via a piston connecting rod 4 . The crankshaft 2 is rotatably mounted in bearings (not shown here) of the likewise not shown cylinder block crankcase of the internal combustion engine 1 and has five central journals 5 for bearing and four connecting rod journals 6 (of which exist figure 1 Only one of them is visible), the longitudinal center axes of the connecting rod journals are oriented parallel to the axis of rotation 7 of the crankshaft 2 at different angular orientations.

[0025] The internal combustion engine 1 also...

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Abstract

The invention relates to an internal combustion engine (1) having a multi-joint crank drive (10), said multi-joint crank drive (10) comprising a plurality of coupling members (11) rotatably mounted on crank pins (6) of a crankshaft (2) and a plurality of articulated connecting rods (15) rotatably mounted on crank pins (19) of an eccentric shaft (8), wherein each of the coupling members (11) is pivotably connected to a piston connecting rod (4) of a piston (3) of the internal combustion engine (1) and to one of the articulated connecting rods (15). A balance shaft (28), which is driven by a crankshaft (2) via a phase adjuster, is provided in order to at least partially dampen second-order mass forces occurring in the internal combustion engine (1).

Description

technical field [0001] The invention relates to an internal combustion engine with a multi-link crank linkage / multi-joint crank linkage (Mehrgelenkskurbeltrieb), wherein the multi-link crank linkage comprises a plurality of connecting rods mounted rotatably on a crankshaft. Coupling on the rod journal and a plurality of auxiliary connecting rods / articulated rods rotatably supported on the connecting rod journal of the eccentric shaft, wherein each coupling is pivotably connected to the piston connecting rod of the piston of the internal combustion engine And one of the secondary connecting rod connections. Background technique [0002] Internal combustion engines of the aforementioned type are known from the prior art. It includes an eccentric shaft, which is coupled to the crankshaft via a multi-link crank mechanism and is thus driven by the internal combustion engine or the crankshaft. The multi-link crank mechanism has a number of coupling elements corresponding to the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F15/26F02B75/06F02B75/04
CPCF16F15/264F01L1/344F02B75/048
Inventor M·布伦德尔
Owner AUDI AG
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