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Sensor unit for a longitudinally adjustable connecting rod

A technology of length adjustment and sensors, which is applied in the field of gasoline engine devices, can solve the problems of motor failure, knock sensor cannot reliably detect the failure of connecting rod function, etc., and achieve the effect of optimizing efficiency and avoiding damage

Inactive Publication Date: 2020-11-06
IWIS MOTORSYSTEME GMBH & CO KG +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in combination with knock control, knock sensors cannot reliably detect malfunctions of the adjustable-length connecting rod, which can lead not only to permanent faults on the adjustable-length connecting rod but also to Total failure of the motor (Totalausfall)

Method used

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  • Sensor unit for a longitudinally adjustable connecting rod
  • Sensor unit for a longitudinally adjustable connecting rod
  • Sensor unit for a longitudinally adjustable connecting rod

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Embodiment Construction

[0031] exist figure 1 The internal combustion engine (gasoline engine) 1 is shown in a schematic representation in FIG. The internal combustion engine 1 has three cylinders 2.1, 2.2 and 2.3, in which stroke pistons 3.1, 3.2, 3.3 are correspondingly moved up and down. Furthermore, internal combustion engine 1 includes a crankshaft 4 , which is rotatably mounted by means of crankshaft bearings 5 ​​. 1 , 5 . 2 , 5 . 3 and 5 . 4 . The crankshaft 4 is correspondingly connected to the associated stroke pistons 3.1, 3.2 and 3.3 by means of connecting rods 6.1, 6.2 and 6.3. 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 second connecting rod bores 8.1, 8.2 and 8.3 are respectively supported on the associated crankshaft journals 7.1, 7.2 and 7.3. The first connecting rod bores 9.1, 9.2 and 9.3 are respectively supported on the piston pins 10.1, 10.2 and 10.3 and are thus pivotably connected to the ass...

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Abstract

The invention relates to a device for a combustion engine, in particular a spark ignition engine, having a longitudinally adjustable connecting rod and a sensor unit for detecting the longitudinal adjustment of the connecting rod. The longitudinally adjustable connecting rod comprises a first connecting rod part for receiving a piston pin and a second connecting rod part for receiving a crankshaftpin, wherein the longitudinal spacing between the piston pin and the crankshaft pin is adjustable by means of the connecting rod. The sensor unit has a sensor and an index region provided on the longitudinally adjustable connecting rod, and a property of the index region which is dependent upon the longitudinal adjustment of the connecting rod can be detected by means of the sensor. The inventionfurther relates to a combustion engine having such a device consisting of a longitudinally adjustable connecting rod and having a sensor unit and to the use of such a sensor device and to a longitudinally adjustable connecting rod.

Description

technical field [0001] The invention relates to a device for an internal combustion engine, in particular a petrol engine, having a length-adjustable connecting rod comprising a first connecting rod hole for receiving a piston pin and a second connecting rod hole for receiving a A crankshaft journal, wherein the length distance between the piston pin and the crankshaft journal can be adjusted by means of a connecting rod. The invention further relates to an internal combustion engine with such a length-adjustable connecting rod and the use of the length-adjustable connecting rod and the sensor arrangement in 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, that is, the ratio of the total volume before compression to the compression volume (ε=(stroke volume V h + Compression volume V c ) / compressed volume V c ). As the compression ratio in...

Claims

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Application Information

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IPC IPC(8): F02B75/04F02D15/02F16C7/06
CPCF02B75/045F02D15/02F16C7/06G01B21/02
Inventor K·埃尔万
Owner IWIS MOTORSYSTEME GMBH & CO KG
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