Pilot control of an internal combustion engine

Patent metadata

Field	Value
Publication number	US-10767586-B2
Application number	US-201715651087-A
Country	US
Kind code	B2
Filing date	Jul 17, 2017
Priority date	Jan 21, 2015
Publication date	Sep 8, 2020
Grant date	Sep 8, 2020

Abstract

A method, computer program product and apparatus for the pilot control of a mixture preparation for an internal combustion engine are disclosed, which include determining a configuration of the internal combustion engine. The configuration is determined by a combination of discrete positions of a plurality of actuators which influence at least one operating parameter of the internal combustion engine. The method, computer program product and apparatus additionally determine a constant adaptation component of the mixture preparation which is fed back by an exhaust gas probe of the internal combustion engine, and store the constant adaptation component and the associated configuration in memory. The pilot control of the mixture preparation is performed with the constant adaptation component when the internal combustion engine is operated in the same configuration.

First claim

We claim:

1. A method for the pilot control of a mixture preparation for an internal combustion engine, wherein the method comprises:
determining a configuration of the internal combustion engine,
wherein the configuration is realized by a combination of discrete positions of a plurality of actuators which influence at least one operating parameter of the internal combustion engine;
determining a constant adaptation component of the mixture preparation which is fed back by an exhaust gas probe of the internal combustion engine;
storing the constant adaptation component and the associated configuration; and
performing pilot control of the mixture preparation with the constant adaptation component when the internal combustion engine is operated in the same configuration, the pilot control being performed without receiving feedback from the exhaust gas probe,
wherein the pilot control performed takes into account the constant adaptation component in an additive manner, with a first load of the internal combustion engine and in a multiplicative manner, different from the additive manner, with a second load of the internal combustion engine, wherein the first load is less than the second load.

2. The method as claimed in claim 1 , wherein a plurality of configurations with associated constant adaptation components are used during the pilot control.

3. The method as claimed in claim 2 , wherein an associated constant adaptation component is used for each combination of discrete positions of the actuators.

4. The method as claimed in claim 1 , wherein the mixture preparation relates to a quantity of fuel to be injected into a combustion chamber of the internal combustion engine.

5. The method as claimed in claim 1 , wherein the mixture preparation is performed depending on at least one operating parameter of the internal combustion engine, and a way in which the constant adaptation component is taken into account during the pilot control operation is dependent on the at least one operating parameter.

6. The method as claimed in claim 5 , wherein the mixture preparation is performed depending on a plurality of operating parameters of the internal combustion engine and respectively associated constant adaptation components are used for different ratios of the plurality of operating parameters.

7. A computer program product for pilot control of a mixture preparation for an internal combustion engine, the computer program product stored in non-transitory memory such that when executed by a processing device, the computer program product causes the processing device to:
determine a configuration of the internal combustion engine, wherein the configuration is realized by a combination of discrete positions of a plurality of actuators which influence operating parameters of the internal combustion engine;
determine a constant adaptation component of the mixture preparation which is fed back by an exhaust gas probe of the internal combustion engine;
store, in the non-transitory memory, the constant adaptation component and the associated configuration; and
perform pilot control of the mixture preparation with the constant adaptation component when the internal combustion engine is operated in the same configuration, the pilot control being performed without receiving feedback from the exhaust gas probe,
wherein the pilot control takes into account the constant adaptation component in an additive manner with a first load of the internal combustion engine and in a multiplicative manner, different from the additive manner, with a second load of the internal combustion engine, wherein the first load is less than the second load.

8. The computer program product of claim 7 , wherein the computer program product determines a constant adaptation component of the mixture preparation for each of a plurality of configurations of the internal combustion engine.

9. The computer program product of claim 7 , wherein an associated constant adaptation component is used for each combination of discrete positions of the actuators.

10. The computer program product of claim 7 , wherein the mixture preparation relates to a quantity of fuel to be injected into a combustion chamber of the internal combustion engine.

11. The computer program product of claim 7 , wherein the mixture preparation is performed depending on at least one operating parameter of the internal combustion engine, and a way in which the constant adaptation component is taken into account during the pilot control operation is dependent on the at least one operating parameter.

12. The computer program product of claim 7 , wherein the mixture preparation is performed depending on the operating parameters of the internal combustion engine and respectively associated constant adaptation components are used for different ratios of the plurality of parameters.

13. An apparatus for the pilot control of a mixture preparation for an internal combustion engine, wherein the apparatus comprises:
a first interface configured to sample a configuration of the internal combustion engine, wherein the configuration is realized by a combination of discrete positions of a plurality of actuators which influence operating parameters of the internal combustion engine;
the first interface is also configured to sample a constant adaptation component of a mixture preparation which is fed back by an exhaust gas probe of the internal combustion engine;
a memory configured to record the constant adaptation component and the associated configuration; and
a processing device, coupled to the memory, configured to provide the constant adaptation component to the mixture preparation during the pilot control and when the internal combustion engine is operated in the same configuration, wherein the processing device is configured, during the pilot control, to take into account the constant adaptation component in an additive manner and in a multiplicative manner, the additive manner and the multiplicative manner being weighted that is dependent upon a load of the internal combustion engine, the pilot control being performed without receiving feedback from the exhaust gas probe.

14. The apparatus of claim 13 , wherein the mixture preparation is performed depending on at least one operating parameter of the internal combustion engine, and a way in which the constant adaptation component is taken into account during the pilot control operation is dependent on the at least one operating parameter.

15. The method as claimed in claim 1 , wherein the first load is less than the second load.

16. The computer program product of claim 7 , wherein the first load is less than the second load.

17. The apparatus of claim 13 , wherein the processing device takes into account the constant adaptation component in an additive manner with a first load and in a multiplicative manner with a second load, the second load being greater than the first load.

Assignees

• Continental Automotive Gmbh
• Vitesco Tech Gmbh

Inventors

• Lenk Jan-Richard
• Viehöver Sebastian

Classifications

• F02D41/2454

  Learning of the air-fuel ratio control · CPC title

• F02D41/1402 Primary

  Adaptive control · CPC title

• F02D13/0207

  changing valve lift or valve lift and timing · CPC title

• F02D13/0219

  by shifting the phase, i.e. the opening periods of the valves are constant · CPC title

• F02D41/2445

  characterised by a plurality of learning conditions or ranges · CPC title