Method for analyzing the oil level of a vehicle

An oil level, vehicle technology, used in engine lubrication, instrumentation, machine/engine, etc.

Active Publication Date: 2019-01-22
HELLA KG HUECK & CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Especially when the liquid level to be measured is higher than the damping cup, the reflection on the inclined liquid surface can lead to the fact that the reflection no longer hits the damping cup, that is to say, it cannot pass through the reflection inside the damping cup. carried out, so that there is no current result at all subsequently

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] In particular, the calculation is carried out with the following equation:

[0013] NomLevel=NomMin+dynAvgComp

[0014] actLevelComp=actLevel (T) *Comp Faktor (T)

[0015] LevelOffsetPos=NomLevel-actLevelComp

[0016] RefLevel=actLevelComp+LevelOffsetPos

[0017] in

[0018] dynAvgComp:

[0019] Long-term mean value, which is the deviation from the minimum characteristic curve (ascertained dynamically, ie during driving operation, and is therefore very precise since unusual driving states and temperature ranges are not taken into account).

[0020] NomMin:

[0021] Nominal minimum fluid level with engine idling or engine stopped (with no vehicle tilt at reference temperature).

[0022] Nomlevel:

[0023] Nominal fill level, which must occur when the vehicle is not on an incline (at the reference temperature), ie the dynamic and compensated mean value dynAvgComp is added to NomMin.

[0024] actLevel (T) :

[0025] The current liquid level for the correspondin...

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PUM

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Abstract

The invention relates to a method for analyzing the oil level of a vehicle in a stationary state, wherein an automatic measurement of the oil level is carried out in the stationary state of the vehicle and while the vehicle is in motion, from the oil level measured in the stationary state of the vehicle And the tilt-induced offset is ascertained from the compensation value based on the previously ascertained oil level during driving operation. Deviations caused by inclination when the vehicle is at a standstill can thus be detected during the oil level measurement.

Description

technical field [0001] The invention relates to a method for evaluating the oil level of a vehicle at a standstill, wherein the oil level is measured both in the standstill state of the vehicle and during driving operation of the vehicle. Background technique [0002] Devices for carrying out such measurements are known, for example, from DE 10 2010 011 490 A1 and DE 10 2009 036 888 A1. The device is used in particular as an oil level measuring device for an engine, especially in a motor vehicle. The basic principle is that an upwardly pointing ultrasonic sensor is arranged in the lower region of the sump, in particular the oil sump, which emits ultrasonic waves which are reflected on the oil surface lying thereon and the reflected ultrasonic waves are then transmitted by the The above ultrasonic sensor receives. The oil level is then calculated from the transit time of the signal using the evaluation electronics. In order to obtain a smooth and uniform filling level rela...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01F23/00F01M11/12
CPCF01M11/12G01F23/2962G01F23/804
Inventor T.尼曼I.措伊克
Owner HELLA KG HUECK & CO
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