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