Method and system for controlling injection processes

Patent metadata

Field	Value
Publication number	US-10583547-B2
Application number	US-201515128475-A
Country	US
Kind code	B2
Filing date	Mar 31, 2015
Priority date	Apr 4, 2014
Publication date	Mar 10, 2020
Grant date	Mar 10, 2020

Abstract

A method and a system for controlling injection processes in liquid fuel-operated setting devices is provided wherein a time-controlled metering device supplies fuel from a fuel tank to a combustion chamber. In order to further improve control of injection processes in the liquid fuel-operated setting devices, a metering time interval of the time-controlled metering device is adapted to the age of the fuel tank.

First claim

The invention claimed is:

1. A method for controlling injection processes in a liquid fuel-operated setting device comprising a fuel tank from which fuel is supplied to a combustion chamber by a time-controlled metering device, the method comprising
metering a quantity of fuel by setting a metering time interval of the time-controlled metering device;
supplying the metered quantity of fuel to the combustion chamber; and,
adapting the metering time interval of the time-controlled metering device to an age of the fuel tank.

2. The method according to claim 1 , comprising recording a filling date or a production date at or on the fuel tank.

3. The method according to claim 2 , comprising detecting or reading the filling date or the production date of the fuel tank in the setting device.

4. The method according to claim 3 , comprising determining the age of the fuel tank before a metering operation or a setting operation.

5. The method according to claim 3 , comprising determining the age of the fuel tank from the filling date or the production date of the fuel tank and a real time.

6. The method according to claim 5 , comprising detecting the real time by a real time clock in the setting device.

7. The method according to claim 3 , comprising detecting or reading the filling date or the production date of the fuel tank by a reading unit in the setting device.

8. The method according to claim 2 , comprising determining the age of the fuel tank before a metering operation or a setting operation.

9. The method according to claim 8 , comprising determining the age of the fuel tank from the filling date or the production date of the fuel tank and a real time.

10. The method according to claim 9 , comprising detecting the real time by a real time clock in the setting device.

11. The method according to claim 2 , comprising determining the age of the fuel tank from the filling date or the production date of the fuel tank and a real time.

12. The method according to claim 11 , comprising detecting the real time by a real time clock in the setting device.

13. The method according to claim 2 , comprising detecting or reading the filling date or the production date of the fuel tank by a reading unit in the setting device.

14. The method of claim 2 , comprising recording the filling date and/or the production date in electronic form.

15. The method of claim 14 , comprising recording the filling date and/or the production date in optically detectable or readable form.

16. The method of claim 2 , comprising recording the filling date and/or the production date in optically detectable or readable form.

17. The method according to claim 1 , comprising estimating an average pressure drop in the fuel tank with the age of the fuel tank.

18. A system for controlling injection processes in a liquid fuel-operated setting device comprising a fuel tank from which fuel is supplied to a combustion chamber by a time-controlled metering device for use in the method according to claim 1 , comprising one or more of:
a filling date or a production date of the fuel tank stated at or on the fuel tank;
the setting device comprises a real time clock;
the setting device comprises a reading unit;
the setting device comprises a controller connected to a real time clock and a reading unit;
the setting device comprises a computer program product with a program code for carrying out the method.

19. A setting device and/or fuel tank for the system according to claim 18 .

Assignees

• Hilti Ag

Inventors

• Stauss-Reiner Peter
• Heeb Norbert
• Dittrich Tilo

Classifications

• B25C1/08 Primary

  operated by combustion pressure · CPC title

• G05B15/02

  electric · CPC title