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Method for reducing wear and damage of a tribological system of a transmission system

A technology of transmission and tribology, which is applied in the direction of gear lubrication/cooling, belt/chain/gear, transmission parts, etc., can solve the problems of transmission damage, a large amount of waste, and dissatisfaction of transmission vehicle users, and achieve the effect of reducing wear and tear

Active Publication Date: 2020-05-22
SCHAEFFLER TECH AG & CO KG
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  • Summary
  • Abstract
  • Description
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AI Technical Summary

Problems solved by technology

This has the disadvantage that the transmission oil is changed either too soon or too late
Premature changing of the transmission oil is cost-intensive and leads to a large amount of waste which burdens the environment
Changing the transmission fluid too late can cause transmission damage due to use of depleted transmission fluid
Loss of functionality of the transmission causes dissatisfaction among vehicle users and leads to poor market acceptance

Method used

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  • Method for reducing wear and damage of a tribological system of a transmission system
  • Method for reducing wear and damage of a tribological system of a transmission system
  • Method for reducing wear and damage of a tribological system of a transmission system

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Embodiment Construction

[0021] exist figure 1 An exemplary embodiment of the method according to the invention with a wear model of a tribological transmission system is shown in . The system of tribology is understood as describing friction, calculating and measuring the coefficient of friction, wear and the required lubrication between interacting surfaces in mutual motion. The wear model has an individual wear module 100 , the output signal of which is fed to a total wear module 200 . The wear factor 50 output by the overall wear module 200 is combined with the temperature factor 70 in a summing point 600 . The temperature factor 70 is calculated from a temperature module 500 which is based on various input variables. The oil sump temperature 7 , the estimated clutch temperature 60 , the setpoint rotational speed 3 of the transmission input shaft, the actual rotational speed 4 of the transmission input shaft and the coolant temperature 8 of the internal combustion engine are among the possible i...

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Abstract

The invention relates to a method for reducing wear and damage of a tribological system of a transmission system comprising a transmission and a clutch which are jointly guided in transmission oil, wherein the transmission temperature is measured and the number of shifts of the transmission and feed it to the mathematical model. In the method, loss factors (90, 95) are calculated by describing a mathematical wear model of the transmission system tribologically, and the operating state of the transmission system is changed according to the loss factors to reduce wear of the transmission system.

Description

technical field [0001] The invention relates to a method for reducing wear and damage of a tribological system of a transmission system comprising a transmission and a clutch guided in a transmission oil, wherein the shifting of the transmission is measured Quantity and transmission temperature, and feed it to the mathematical model. Background technique [0002] In motor vehicles, transmission systems are used which comprise a transmission and a clutch which are jointly mounted in transmission oil. When the transmission system is operated, deposits form in the transmission oil due to wear of the mechanical components. In addition, temperature-dependent oxidation of the transmission oil occurs. For the reasons stated, it is necessary to change the transmission oil. This happens at preset time intervals. This has the disadvantage that the transmission oil is changed either too early or too late. A premature change of the transmission oil is cost-intensive and leads to a ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F16H57/04
CPCF16H57/0405
Inventor 洛亚尔·乔治·马克米利安克里斯蒂安·施奈德
Owner SCHAEFFLER TECH AG & CO KG
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