Method for service life monitoring of a compressor for a compressed air system

Patent metadata

Field	Value
Publication number	US-11732706-B2
Application number	US-202017022252-A
Country	US
Kind code	B2
Filing date	Sep 16, 2020
Priority date	Sep 27, 2019
Publication date	Aug 22, 2023
Grant date	Aug 22, 2023

Abstract

A method for operating a compressor for a compressed air system of a motor vehicle, in particular an air suspension system, wherein an operating temperature of the compressor is determined and used as a criterion for the compressor to be operated until a switch-off temperature (T) is reached, wherein a switch-on duration (t) until reaching the switch-off temperature (T) is determined, and the determined switch-on duration (t) is adjusted by a parameter (LP) dependent on the switch-off temperature (T) reached.

First claim

The invention claimed is:

1. A method for operating a compressor for a compressed air system of a motor vehicle, the method comprising:
determining an operating temperature of the compressor and using the operating temperature as a criterion for the compressor to be operated until a switch-off temperature is reached;
measuring a switch-on duration until the switch-off temperature is reached ; and
calculating a weighted runtime based on the measured switch- on duration with a life parameter which depends on the switch-off temperature reached.

2. The method as claimed in claim 1 , wherein the switch-on duration is measured for each compression process of the compressor and totaled to form a total runtime of the compressor.

3. The method as claimed in claim 2 , wherein the total runtime of the compressor is compared with a predefined nominal service life.

4. The method as claimed in claim 1 , wherein the switch-off temperature lies within a temperature range between a first predefined and a second predefined limit switch-off temperature.

5. The method as claimed in claim 2 , wherein the switch-off temperature lies within a temperature range between a first predefined and a second predefined limit switch-off temperature.

6. The method as claimed in claim 3 , wherein the switch-off temperature lies within a temperature range between a first predefined and a second predefined limit switch-off temperature.

7. The method as claimed in claim 3 , wherein on reaching a predefined total runtime of the compressor, the first predefined limit switch-off temperature is reduced.

8. The method as claimed in claim 4 , wherein on reaching a predefined total runtime of the compressor, the first predefined limit switch-off temperature is reduced.

9. The method as claimed in claim 1 , wherein the switch-off temperature is determined as a function of one or more operating parameters.

10. The method as claimed in claim 9 , wherein at least one ambient temperature is used as an operating parameter.

11. The method as claimed in claim 9 , wherein at least one current value is used as an operating parameter.

12. The method as claimed in claim 1 , wherein the operating temperature is determined using a temperature calculation model.

13. The method as claimed in claim 1 , wherein the operating temperature is determined using a temperature sensor.

14. The method as claimed in claim 1 , wherein the compressed air system is an air suspension system.

Assignees

• Continental Teves Ag & Co Ohg

Inventors

• Hein Dierk

Classifications

• F04B49/06 Primary

  Control using electricity (regulating by means of floats actuating electric switches F04B49/04) · CPC title

• F04B49/02

  Stopping, starting, unloading or idling control · CPC title

• F04B49/065 Primary

  and making use of computers · CPC title

• F04B49/10 Primary

  Other safety measures · CPC title

• B60G17/0155

  pneumatic unit · CPC title